Consulta: subjectFacets:"Antioxidant"
Registros recuperados: 183
Data/hora: 10/06/2024 07:51:16

Taninos de forraje de árboles y su efecto en producción y calidad de la carne de bovinos y ovinos.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Velázquez Martínez, Mauricio.
Se evalúo el comportamiento productivo y calidad de la carne de toretes y corderos alimentados con taninos en la dieta. Se realizaron dos experimentos. En el primero, se usaron 27 toretes B. taurus x B. indicus (peso inicial 412.7±20 kg), asignados al azar a uno de tres tratamientos: dieta base (DB), dieta base + 2500 IU de vitamina E/animal/día (DVE), y dieta base + 3% (base seca) de taninos condensados de extracto de Quebracho (DEQ). Se evaluó consumo de materia seca (CMS), ganancia diaria de peso (GDP), conversión y eficiencia alimenticia, rendimiento en canal, color, pH, composición química y actividad de agua (Aw) de la carne. Las variables se analizaron en un diseño de bloques completos al azar usando el Proc GLM; y se estimaron las curvas de consumo...
Palavras-chave: Bovinos; Ovinos; Consumo; Carne; Canales; Quebracho; Antioxidante; Cattle; Lambs; Intake; Meat; Carcass; Antioxidant; Ganadería; Doctorado.
Ano: 2013
URL: http://hdl.handle.net/10521/1982

The pequi pulp oil (Caryocar brasiliense Camb.) provides protection against aging-related anemia, inflammation and oxidative stress in Swiss mice, especially in females
Provedor de dados: Genetics and Molecular Biology
Autores: Roll,Mariana Matos; Miranda-Vilela,Ana Luisa; Longo,João Paulo Figueiró; Agostini-Costa,Tania da Silveira; Grisolia,Cesar Koppe.
Abstract Continued exposure to reactive oxygen species and inflammation are the rationale behind aging theories and associated diseases. Scientific evidence corroborates the ethnomedicinal use of the oil of pequi (Caryocar brasiliense Camb.), a typical Brazilian Cerrado fruit, against oxidative damage to biomolecules and inflammation. We aimed to investigate in vivo the antioxidant and anti-inflammatory effects of pequi oil on hemogram and DNA damage in healthy young adult and older middle-aged Swiss mice of both genders. Animals, aged 6-7 and 11-12 months, were orally treated for 15 days with pequi oil at 30 mg/day. Blood samples were used for hemogram and comet assay, and bone marrow for micronucleus test. Female controls of 11-12 months had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging-related inflammation and oxidative stress; Comet assay; Micronucleus; Antioxidant; Folk medicine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500858

Vegetable and fruit juice enhances antioxidant capacity and regulates antioxidant gene expression in rat liver, brain and colon
Provedor de dados: Genetics and Molecular Biology
Autores: Yuan,Linhong; Liu,Jinmeng; Zhen,Jie; Xu,Yao; Chen,Shuying; Halm-Lutterodt,Nicholas Van; Xiao,Rong.
Abstract To explore the effect of fruit and vegetable (FV) juice on biomarkers of oxidative damage and antioxidant gene expression in rats, 36 adult male Wistar rats were randomly divided into control, low FV juice dosage or high FV juice dosage treatment groups. The rats were given freshly extracted FV juice or the same volume of saline water daily for five weeks. After intervention, serum and tissues specimens were collected for biomarker and gene expression measurement. FV juice intervention increased total antioxidant capacity, glutathione, vitamin C, β-carotene, total polyphenols, flavonoids levels andglutathione peroxidaseenzyme activity in rat serum or tissues (p &lt; 0.05). FV juice intervention caused reduction of malondialdehyde levels in rat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Biomarkers; Fruit and vegetable; Gene expression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100134

Anticlastogenic potential and antioxidant effects of an aqueous extract of pulp from the pequi tree (Caryocar brasiliense Camb)
Provedor de dados: Genetics and Molecular Biology
Autores: Khouri,Juliana; Resck,Inês S.; Poças-Fonseca,Marcio; Sousa,Thiago M.M.; Pereira,Luciana O.; Oliveira,Adriano B.B.; Grisolia,Cesar K.
The effectiveness of an aqueous extract of Caryocar brasiliense (Caryocaraceae) Camb pulp, popularly known in Brazil as pequi, against clastogenicity induced by cyclophosphamide and bleomycin was evaluated using an in vivo mouse bone marrow cell micronuclei test, an in vitro Chinese hamster ovary cell (CHO-K1) chromosome aberration test and an in vitro antioxidant assay based on the oxidative damage to 2-deoxy-D-ribose (2-DR) induced by hydroxyl radicals (•OH) generated by the reaction between ascorbic acid and (Fe III)-EDTA. In mouse bone marrow cells the extract showed a protective effect against micronuclei induced by cyclophosphamide and bleomycin but did not interfere with polychromatic bone marrow erythrocyte proliferation, except when the mice had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caryocar brasiliense; Anticlastogenicity; Antioxidant; Micronucleus.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300024

Antigenotoxic activity and antioxidant properties of organic and aqueous extracts of pequi fruit (Caryocar brasiliense Camb.) pulp
Provedor de dados: Genetics and Molecular Biology
Autores: Miranda-Vilela,Ana L.; Resck,Inês S.; Grisolia,Cesar K.
The daily consumption of natural antioxidants protects against oxidative damage caused by reactive oxygen species (ROS), including DNA damage, and can reduce the risk of cancer, atherosclerosis and other degenerative diseases. The pulp of pequi (Caryocar brasiliense Camb.) fruit, a tree native to the Brazilian savannah, contains several compounds with antioxidant properties, including carotenoids, vitamin C, phenolic compounds such as flavonoids, saponins and tannins, and essential oils. In this work, we examined the ability of organic and aqueous extracts of pequi fruit pulp to protect against the genotoxicity induced by two antineoplastic drugs, cyclophosphamide (CP) and bleomycin (BLM). Micronucleus tests with mouse bone marrow cells and single-cell gel...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antigenotoxic; Antioxidant; Caryocar brasiliense; Comet assay; Micronucleus; Pequi pulp extracts; Reactive oxygen species; TBARS assay.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500025

Protective effect of carboxymethyl-glucan (CM-G) against DNA damage in patients with advanced prostate cancer
Provedor de dados: Genetics and Molecular Biology
Autores: Magnani,Marciane; Castro-Gomez,Raul Jorge Hernan; Mori,Mateus Prates; Kuasne,Hellen; Gregório,Emerson Pereira; Libos Jr,Farid; Cólus,Ilce Mara de Syllos.
Carboxymethyl-glucan (CM-G) is a soluble derivative from Saccharomyces cerevisiae (1 → 3)(1 → 6)-β-D-glucan. The protective efficiency of CM-G against DNA damage in cells from patients with advanced prostate cancer (PCa), and undergoing Androgen Deprivation Therapy (ADT), was evaluated. DNA damage scores were obtained by the comet assay, both before and after treatment with CM-G. The reduction in DNA damage, ranging from 18% to 87%, with an average of 59%, was not related to the increased number of leukocytes in peripheral blood. The results demonstrate for the first time the protective effect of CM-G against DNA damage in patients with advanced PCa. Among smokers, three presented the highest reduction in DNA damage after treatment with CM-G. There was no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Β-D-glucan; Carboxymethyl-glucan; Prostate cancer.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100023

Postharvest quality of strawberry produced during two consecutive seasons
Provedor de dados: Horticultura Brasileira
Autores: Antunes,Marina C; Cuquel,Francine L; Zawadneak,Maria AC; Mogor,Átila F; Resende,Juliano TV.
Maintaining plants in the field for two consecutive crop cycles is one of the latest techniques used by strawberry growers to reduce production costs. The goal of this research was to evaluate the postharvest fruit quality of six strawberry cultivars produced for two consecutive seasons with the same plants. They were planted from May to July 2010 under low-tunnel and fruits were evaluated in two growing seasons (season 1= January, February, and March 2011 and season 2= August, September, and October 2011), totaling three harvests of each cultivar in each year season. Fruits were picked up randomly among 500 plants of each cultivar, organized into five replications of five fruits and kept for three days before analysis under refrigeration (average...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragariax ananassa; Sensorial analysis; Antioxidant; Minerals; Functional food; C vitamin.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000200168

Bioactive compounds, processing quality and yield of colored flesh potato clones
Provedor de dados: Horticultura Brasileira
Autores: Cima,Francieli Fatima; Pereira,Elisa dos S; Schiavon,Marina V; Munhoz,Priscila C; Lenz,Emerson A; Wolter,Daiana D; Silva,Tuane A da; Azevedo,Fernanda Q; Vizzotto,Márcia; Pereira,Arione da S.
ABSTRACT Colored flesh potatoes contain high concentrations of phytochemicals, such as phenolic acids, anthocyanins and carotenoids, which have therapeutic effects and promoters of human health. The objective of the study was to evaluate the concentration of bioactive compounds and industrial quality and yield traits of potato tubers. Four experiments were carried out in Pelotas-RS. In 2012 and 2013, tuber yield traits were evaluated and in 2014 and 2015, the bioactive compounds (phenolic compounds, anthocyanins and carotenoids), antioxidant activity and industrial quality traits [glucose content, dry matter (%) and frying color] were assessed. Clones C2715-01-09, C2721-22-09 and C2743-01-09, having fully pigmented purple flesh presented high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Antioxidant; Special potatoes.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200139

Maternal oxidative stress and reproduction: testing the constraint, cost and shielding hypotheses in a wild mammal
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Viblanc, Vincent A.; Schull, Quentin; Roth, Jeffrey D.; Rabdeau, Juliette; Saraux, Claire; Uhlrich, Pierre; Criscuolo, François; Dobson, F. Stephen.
1.Oxidative stress has been proposed as a central causal mechanism underlying the life history trade-off between current and future reproduction and survival in wild animals. 2.Whereas mixed evidence suggests that maternal oxidative stress may act both as a constraint and a cost to reproduction, some studies have reported a lack of association between reproduction and maternal oxidative stress. 3.The oxidative shielding hypothesis offers an alternative explanation, suggesting that mothers may pre-emptively mitigate the oxidative costs of reproduction by increasing antioxidant defences prior to reproduction. 4.We tested the oxidative constraint, cost, and shielding hypotheses using a longitudinal field study of oxidative stress levels in a species that...
Tipo: Text
Palavras-chave: Antioxidant; Body condition; Cost of reproduction; Life history; Mammal; Mitochondria; Trade-off.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00415/52679/53542.pdf

Bioactive Indole Derivatives from the South Pacific Marine Sponges Rhopaloeides odorabile and Hyrtios sp.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Longeon, Arlette; Copp, Brent R.; Quevrain, Elodie; Roue, Melanie; Kientz, Betty; Cresteil, Thierry; Petek, Sylvain; Debitus, Cecile; Bourguet-kondracki, Marie-lise.
Indole derivatives including bromoindoles have been isolated from the South Pacific marine sponges Rhopaloeides odorabile and Hyrtios sp. Their structures were established through analysis of mass spectra and 1D and 2D NMR spectroscopic data. Their potential inhibitory phospholipase A(2) (PLA(2)), antioxidant and cytotoxic activities were evaluated. The new derivative 5,6-dibromo-L-hypaphorine (9) isolated from Hyrtios sp. revealed a weak bee venom PLA2 inhibition (IC50 0.2 mM) and a significant antioxidant activity with an Oxygen Radical Absorbance Capacity (ORAC) value of 0.22. The sesquiterpene aureol (4), also isolated from Hyrtios sp., showed the most potent antioxidant activity with an ORAC value of 0.29.
Tipo: Text
Palavras-chave: Indole derivatives; Bromoindoles; Marine sponge; Rhopaloeides odorabile; Hyrtios sp.; PLA(2) inhibitor; Antioxidant; Cytotoxic.
Ano: 2011
URL: https://archimer.ifremer.fr/doc/00214/32485/30975.pdf

Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dubousquet, Vaimiti; Gros, Emmanuelle; Berteaux-lecellier, Veronique; Viguier, Bruno; Raharivelomanana, Phila; Bertrand, Cédric; Lecellier, Gael J.
Temperature can modify membrane fluidity and thus affects cellular functions and physiological activities. This study examines lipid remodelling in the marine symbiotic organism, Tridacna maxima, during a time series of induced thermal stress, with an emphasis on the morphology of their symbiont Symbiodinium. First, we show that the French Polynesian giant clams harbour an important proportion of saturated fatty acids (SFA), which reflects their tropical location. Second, in contrast to most marine organisms, the total lipid content in giant clams remained constant under stress, though some changes in their composition were shown. Third, the stress-induced changes in fatty acid (FA) diversity were accompanied by an upregulation of genes involved in lipids...
Tipo: Text
Palavras-chave: Thermal stress; Fatty acids; Differential expression; Antioxidant; Symbiodinium; Tridacna maxima.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00361/47195/79514.pdf

Gene expression pattern of digestive and antioxidant enzymes during the larval development of reared Atlantic bluefin tuna (ABFT), Thunnus thynnus L.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mazurais, David; Coves, Denis; Papandroulakis, Nikos; Ortega, Aurelio; Desbruyeres, Elisabeth; Huelvan, Christine; Le Gall, Marie-madeleine; De La Gandara, Fernando; Cahu, Chantal.
The aim of this study was to determine whether mortality observed during the larval development of reared bluefin tuna (Thunnus thynnus) could be related to improper expression profiles of key genes involved in digestive or antioxidant response capabilities. Tuna larvae were sampled at hatching, 2, 5, 10, 15 and 20 dph (days post hatching) for the relative quantification of transcripts encoded by genes involved in digestive [trypsinogen 1 (TRYP1), alpha-amylase (AMY), aminopeptidase N (ANPEP)] and antioxidant [catalase (CAT)] functions. The levels of expression of ANPEP related to the development and maturation of intestinal function increased from 5 to 20 dph. Furthermore, AMY and TRYP1 genes, which are pancreatic enzymes implicated in carbohydrate and...
Tipo: Text
Palavras-chave: Tuna; Gene; Expression; Development; Digestion; Antioxidant.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00171/28264/26521.pdf

Sunscreen, antioxidant, and bactericide capacities of phlorotannins from the brown macroalga Halidrys siliquosa
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Lann, Klervi; Surget, Gwladys; Couteau, Celine; Coiffard, Laurence; Cerantola, Stephane; Gaillard, Fanny; Larnicol, Maud; Zubia, Mayalen; Guerard, Fabienne; Poupart, Nathalie; Stiger-pouvreau, Valerie.
The present study focused on a brown macroalga (Halidrys siliquosa), with a particular emphasis on polyphenols and their associated biological activities. Two fractions were obtained by liquid/liquid purification from a crude hydroethanolic extract: (i) an ethyl acetate fraction and (ii) an aqueous fraction. Total phenolic contents and antioxidant activities of extract and both fractions were assessed by in vitro tests (Folin-Ciocalteu test, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, reducing power assay, superoxide anion scavenging assay, and beta-carotene-linoleic acid system). For the most active fraction, i.e., the ethyl acetate fraction, the oxygen radical absorbance capacity (ORAC) value, antibacterial activities, and sunscreen...
Tipo: Text
Palavras-chave: Antioxidant; Bactericidal; Phenolic compounds; Phaeophyceae; Seaweed; ORAC value; Sunscreen potential.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00366/47682/47970.pdf

Protective Effect of Melatonin on Damage in the Sperm Parameters of Mice Exposed to Diazinon
Provedor de dados: International Journal of Morphology
Autores: Sarabia,L; Espinoza-Navarro,O; Maurer,I; Ponce,C; Bustos-Obregón,E.
Since normal sperm parameters can be altered by organophosphorous pesticides, this study intended to determine if melatonin is able to prevent the damage on sperm quality after an acute exposure to diazinon. Adult male mice were injected intraperitoneally with melatonin, diazinon (1/3 or 2/3 LD50) or both, and sperm parameters were evaluated on days 1 or 32 post injection. Groups treated with diazinon showed elevated lipid peroxidation levels on day 1 post treatment, while groups pretreated with melatonin before diazinon showed no difference compared to control. Sperm count showed a significant decrease in both diazinon-treated groups only on day 32 post injection; no differences were observed in groups pretreated with melatonin prior to diazinon compared...
Tipo: Journal article
Palavras-chave: Melatonin; Organophosphates; Antioxidant; Mouse sperm; Sperm morphology.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000400029

Quercetin Inhibits Left Ventricular Dysfunction Induced by Chronic Stress in Rats
Provedor de dados: International Journal of Morphology
Autores: Bin-Jaliah,Ismaeel.
Complications of chronic stress including cardiovascular disease are among the common public health problems that affect the lives of millions of people around the globe. We sought to determine whether the anti-oxidant and anti-apoptotic agent, quercetin can inhibit chronic stress-induced left ventricular dysfunction (LVD). Chronic unpredictable stress (CUS) was induced in rats using a variety of stressors in the presence and absence of quercetin (50 mg/kg body weight/day). Harvested tissues from the left ventricles (LV) of these animals were examined using basic histological staining. In addition, LV tissue homogenates were assayed for markers of oxidative and anti-oxidative stress that are known to be modulated in cardiac dysfunction. Furthermore, LV...
Tipo: Journal article
Palavras-chave: Quercetin; Chronic stress; Heart failure; Left ventricular dysfunction; Antioxidant; Apoptosis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200044

Circadian rhythms of the L-ascorbic acid level in Euglena and spinach
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Kiyota, Maki; Numayama, Naoko; Goto, Ken.
Plant defenses against photo-oxidative stress have been studied almost exclusively with respect to stress responses, and little is known about how non-enzymic antioxidants change under constant conditions without a time cue or an environmental stress. Here, we show that, in both the flagellated alga Euglena gracilis Z and the angiosperm Spinacia oleracea L., the potent antioxidant L-ascorbic acid (Asc) displays a circadian rhythm with a maximum at subjective midday, a physiological state reflecting that attained at noon under daily light/dark cycles. Thus, photosynthetic organisms can maximize antioxidant levels in anticipation of midday, when photo-oxidative stress is most severe. These results may partly explain the in-phase circadian UV-C resistance...
Palavras-chave: Antioxidant; L-ascorbic acid; Circadian; Euglena gracilis; Midday; Photooxidation; Spinach.
Ano: 2006
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/716

Circadian rhythms of resistance to UV-C and UV-B radiation in Euglena as related to 'escape from light' and 'resistance to light'
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Bolige, Aoen; Kiyota, Maki; Goto, Ken; 後藤, 健.
Radiation-induced stress, either from visible or UV light, is strongest at midday. We found that, in the absence of stress or time cues, Euglena gracilis Z was the most resistant to UV-C and UV-B at subjective midday, whether judged from immediate or reproductive survival. The circadian UV-resistance rhythms were free-running in stationary cultures under 1-h light/1-h dark cycles or continuous darkness, indicating that cell-cycle dependent DNA susceptibility to UV was not involved. We moreover examined what was the primary cause of the circadian U-V resistance, estimated as the immediate cell survival. The half-maximal lethal dose (LD50) of UV-C at subjective midday (the most resistant phase) was 156 J/m(2), which is similar to 3-fold that at subjective...
Palavras-chave: Antioxidant; L-ascorbic acid; Circadian rhythms; Dimethylsulfoxide; Euglena gracilis; Photo-oxidation; UV-sensitivity.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/718

Atrazine and Mesotrione-Induced Oxidative Stress and Impact on Antioxidant Enzymes and Chlorophyll Contents in Bermudagrass
Provedor de dados: Planta Daninha
Autores: WANG,Y.; YU,J.; ZHOU,B.; SAPKOTA,S.; WEI,F.; WANG,Z.
ABSTRACT: The effect of atrazine, mesotrione, and joint activity of atrazine plus mesotrione on pigment, lipid peroxidation, and antioxidant enzyme activity was studied. Atrazine and mesotrione treatments significantly reduced chlorophyll a (Chl a), chlorophyll b (Chl b), carotenoid concentrations, and protein content in bermudagrass (Cynodon dactylon L.) plants, whereas they significantly enhanced lipid peroxidation. The treatment of atrazine plus mesotrione caused greater phototoxic effect on bermudagrass than either herbicide alone, which was evident from the significantly decreased membrane stability noted as a function of the enhanced singlet oxygen and malondialdehyde (MDA) contents, as well as from the greater reduction in Chl a, Chl b, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Carotenoids; Herbicide; Reactive oxygen species.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100337

The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Gumus,R; Ercan,N; Imik,H.
ABSTRACT This study was conducted to determine the effect of diets containing different levels of thyme essential oil (TEO) on performance, some serum parameters and the antioxidative metabolism of the serum and liver tissues in quails. A total number of 200 sixteen-days-old Japanese quails (Coturnix coturnix japonica) were used in the study. The animals were divided into 4 groups; the control group was fed only basal diet but groups TEO1, TEO2 and TEO3 had thyme essential oil of 150, 300 and 450 mg/kg, respectively, added to their diets. Body weight and daily weight gain increased with higher levels of thyme essential oil in the feed, yet a statistically significant increase was detected in only group TEO3 (p&lt;0.05). Furthermore, in all of the groups...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Quail; Liver; Performance; Thyme essential oil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200297

Effect of Marination with Fruit and Vegetable Juice on the Some Quality Characteristics of Turkey Breast Meat
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Gök,V; Bor,Y.
ABSTRACT The effect of marination with antioxidant-rich fruit and vegetable juices, including black carrot juice, black mulberry juice, black grape and pomegranate juice, mixed vegetable juice (yellow carrot, tomato, zucchini, pepper, black carrot, cucumber and lettuce) for 24 and 48 hours on chemical, textural and sensorial properties of turkey breast meat was investigated. Moisture content of the samples marinated for 24 hours and cooked varied between 58.85 and 70.51%, with the control sample presenting the moisture highest value. The samples marinated in red grape juice for 48 hours had the highest cooking loss (49.11%), while the lowest cooking loss was recorded in the samples marinated in black carrot juice (40.61%). Moreover, the phenolic content of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Marination; Phenolic compounds; Turkey meat; Texture.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300481

Effect of Dietary Supplementation of Full-Fat Canola Seeds on Productive Performance, Blood Metabolites and Antioxidant Status of Laying Japanese Quails
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Ibrahim,NS; Sabic,EM; Abu-Taleb,AM; Abdel-Moneim,AE.
ABSTRACT The present study was carried out to evaluate the effects of dietary supplementation of different levels of full-fat canola seeds (FFCS) on productive performance, blood metabolites and antioxidant status of laying Japanese quails. A total of 360, 8-week-old quails were divided into a completely randomize design with 4 dietary experimental groups and three pens each, each pen containing 30hens. The experimental groups were fed iso-caloric and iso-nitrogenous diets supplemented with FFCS at levels 0, 50, 100 and 150 g/kg diet. The experiment lasted 16 weeks. All supplemented groups showed significant effects in the final body weight (g), hen feed consumption (g/hen/day), egg mass (g egg/hen/day) and hen-day egg production (%). However, egg weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Full-fat canola seed; Performance; Blood metabolities; Antioxidant; Laying quail.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100318

Biochemical Parameters and Histopathological Findings in the Forced Molt Laying Hens
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Mert,N; Yildirim,BA.
ABSTRACT The aim of this study was to evaluate the effects of forced molting using biochemical parameters and histopathological findings in laying hens. 36 Hyline W36 strain laying hens, 90 weeks old were chosen for this research. Eight of these chickens were randomly selected and placed in a cage as the control group before the molting program began. All the others 28 chickens were used for the forced molting program. Eight laying hens were slaughtered at the end of the molting program named as molting group. The remaining 20 hens were fed for 37 days, weighted and slaughtered when they reached the maximum egg production (80%) as postmolting group. Then, blood was analyzed for malondialdehyde, glutathione, catalase, glucose, calcium, phosphorus, albumin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Lipid peroxidation; Molting; Ovarium; Thyroid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400711

Effect of Dietary Curcumin on the Antioxidant Status of Laying Hens under High-Temperature Conditions
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Nawab,A; Li,G; Liu,W; Lan,R; Wu,J; Zhao,Y; Kang,K; Kieser,B; Sun,C; Tang,S; Xiao,M; An,L.
ABSTRACT Heat stress induces oxidative stress, and reduces body antioxidant metabolite levels, which can affect poultry production performance. Dietary antioxidants protect birds against the adverse effects of heat stress. The effects of increasing concentrations of dietary curcumin on the antioxidant parameters of layers maintained under high-temperature conditions for nine weeks were evaluated. Roman laying hens (n = 336, 22 weeks old, 1420 g BW) were divided into three treatment groups. The first group served as a thermoneutral control (kept at 25 ± 1 °C). The second group was exposed to high temperatures (32 ± 1 °C, 6 h/d), given a basal diet. The third group was further divided into five treatment groups (100, 150, 200, 250, 300 mg/kg Curcumin) fed a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Curcumin; Heat stress; Laying hen; Oxidative damage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200337

The Effect of Supplementing Tea Polyphenols in Diet of Laying Hens on Yolk Cholesterol Content and Production Performance
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Wang,Y; Yang,Q; Lin,P; Li,C; Lu,Y; Daijun,S.
ABSTRACT This study was conducted to evaluate the influence of supplementing tea polyphenols (TP) in diet of laying hens on yolk cholesterol content and production performance. A total of 1800 Lohmann laying hens aged 48 weeks were randomly allocated to 6 groups. Each group consisted of 6 replicates with 50 layers. The feeding experiment was 4 weeks including one-week acclimatization. Layers fed basal diet supplemented with 0, 150, 200, 250, 300 and 350 mg TP/kg diet, respectively. The results showed that average daily feed intake (ADFI), feed conversion ratio (FCR), average egg weight (AEW), laying rate and the indicators of egg quality were not significantly affected by the diet supplemented with 300 mg/kg TP (p&gt;0.05). However, yolk cholesterol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Laying hens; Production performance; Tea polyphenols; Yolk cholesterol content.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200302

The Effects of Dietary Flavonoid Supplementation on the Antioxidant Status of Laying Hens
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Iskender,H; Yenice,G; Dokumacioglu,E; Kaynar,O; Hayirli,A; Kaya,A.
ABSTRACT Ninety-six 28-week-old Lohmann White laying hens were utilized to test the antioxidant effects of flavonoids (hesperidin, naringin, and quercetin at 0.5 g/kg diet) during an 8-wk experimental period. At the end of the experiment blood samples were collected to determine total protein, cholesterol, and malondialdehyde (MDA) serum levels as well as activities of glutathione reductase (GR), glutathione peroxidase (GSH-Px), glutathione-S-transferase (GST), and superoxide dismutase (SOD) and level of glutathione (GSH) in erythrocyte lysates. Data were analyzed using one-way ANOVA. Naringin supplementation did not alter serum cholesterol concentration, whereas hesperidin and quercetin supplementations decreased serum cholesterol concentration. Naringin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Flavonoid; Hesperidin; Naringin; Quercetin.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400663

Effect of Fennel (Foeniculum Vulgare Mill.) Used as a Feed Additive on The Egg Quality of Laying Hens Under Heat Stress
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Gharaghani,H; Shariatmadari,F; Torshizi,MA.
In this study, one hundred and twenty 40-wk-old White Leghorn laying hens were submitted to two different thermal conditions (24° C vs. 34° C) and were fed three levels (0, 10, or and 20 g/kg of diet)of fennel fruits (Foeniculum vulgare Mill.) as a feed additive in. This study was carried out according to a factorial design consisting of two temperatures and three fennel levels with five 5 replicates each (n = 2 × 3 × 5). Performance, egg production, egg quality, and oxidative product levels (malondialdehyde, MDA, and carbonyl) in the eggs were measured before and after heat exposure. The results showed that the tested temperatures did not affect egg production (p&gt;0.05), but the production of eggs with broken shell and feed intake were affected by heat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fennel; Heat stress; Laying hens; Antioxidant; Feed.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200199

The Effects of Fucoxanthin Dietary Inclusion on the Growth Performance, Antioxidant Metabolism and Meat Quality of Broilers
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Gumus,R; Gelen,S Urcar; Koseoglu,S; Ozkanlar,S; Ceylan,ZG; Imik,H.
ABSTRACT Fucoxanthin is a major carotenoid found in marine brown algae. This study investigated the impact of fucoxanthin on the growth performance, antioxidant metabolism and meat quality of broilers. Overall, 180 one-day-old male broiler chicks (Ross 308) were assigned to one control group (CONT) and 2 treatment groups (FUCO1 and FUCO2), with six replicates of 10 birds each. The CONT, FUCO1 and FUCO2 birds were fed a basal diet supplemented with 0, 100 and 200 mg/kg of fucoxanthin, respectively. Average body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR) were similar among the groups. Fucoxanthin increased catalase (CAT) and superoxide dismutase (SOD) activities and glutathione (GSH) levels (p&lt;0.01), and reduced malondialdehyde...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Broiler; Fucoxanthin; Meat quality; Performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300487

Effects of the Dietary Supplementation of Sucupira (Pterodon Emarginatus Vog.) and Copaiba (Copaifera Langsdorffii) Resinoils on Chicken Breast and Thigh Meat Quality and Oxidative Stability
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Lima,CB de; Racanicci,AMC; Oliveira,GR; Migotto,DL; Amador,SA; Souza,TC de; Tanure,CBGS; Vieira,A.
ABSTRACT An experiment was conducted to evaluate the addition of the oil resins ofsucupira (Pterodon emarginatus Vog.) and copaiba (Copaifera langsdorffii) to broiler diets on chicken meat composition, quality, and lipid peroxidation. 350 one-d-old broiler chicks were submitted to seven treatments, consisting of the diets supplemented with copaiba (COP) or sucupira (SUC) resin oils at three different concentrations (500, 900, and 1300 ppm) plus a negative control diet (CONT). At 37 days of age, 10 birds per treatment were selected according to the average weight of the experimental unit and slaughtered to collect breast and thigh meat, which was stored at 4°C for 24 hours to evaluate pH, color (L*, a*, b*), cooking weight loss (CWL), and shear force (SF)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Brazilian plants; Broiler meat; Meat quality; TBARS.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000047

Tarragon (Artemisia Dracunculus L.) Could Alleviate Negative Effects of Stocking Density in Laying Hens
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Kaya,H; Karaalp,M; Kaynar,Ö; Tekçe,E; Aksakal,A; Bayram,B.
ABSTRACT The study was conducted to determine the effects of stocking density (SD, 5 or 7 layers/cage) and tarragon (Artemisia dracunculus L.) diet supplementation at four levels (0, 1.2, 6 and 12 g/kg feed) on performance, certain egg characteristics, serum, liver, egg yolk and small intestine bacteria parameters in laying hens. The experiment was carried out over a period of 8 weeks, with 192 Lohman Brown commercial hybrids at 50-w-age. The results showed that an increased SD reduced feed intake (FI; p&lt;0.01) and egg production (p&lt;0.05), but had no effect on the weight gain, feed conversion ratio, damaged egg ratio, egg weight and egg quality (p&gt;0.05) parameters. The supplementation of tarragon to the diet reduced the FI and damaged egg ratio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Bacteria; IgG; Stocking density; Tarragon.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100301

Vitamins E and C Supplementation in Japanese Quail: Effects on Growth Performance and Biochemical and Haematological Parameters
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Khazaei,R; Requena,F; Seidavi,A; Martínez,AL.
ABSTRACT The effects of vitamins E and C supplementation on growth performance and biochemical and haematological parameters of Japanese quail were studied. A total of 360 one-day-old Japanese female quails were randomly allocated to nine dietary treatment groups (10 birds per replicate and 4 replicates per treatment), including a control (basal diet) and the basal diet supplemented with: 250 or 500 mg/kg of vitamin C, 250 or 500 mg/kg of vitamin E, 250 mg/kg of both vitamins E and C, 250 and 500 mg/kg of vitamins E and C, 500 and 250 mg/kg of vitamins E and C, and 500 mg/kg of both vitamins E and C. Vitamin supplementation improved productive parameters and raised the blood plasma levels of protein, thyroid-stimulating hormone, calcium and phosphorus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Quail; Stress; Vitamin.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200301

Inclusion of Moringa Leaf Powder (Moringa oleifera) in Fodder for Feeding Japanese Quail (Coturnix coturnix japonica)
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Castillo,LRI; Portillo,LJJ; León,FJ; Gutiérrez,DR; Angulo,EMA; Muy-Rangel,MD; Heredia,JB.
ABSTRACT This research evaluated the nutritional, nutraceutical, antimicrobial, as well as the growing promoter effect of Moringa oleifera (MOR) leaves flour in fodders for fattening Japanese quails. The antimicrobial activity was measured using the method of Kirby-Bauer. A completely random design with 4x2 factorial arrangement was used, fodders included 0, 7, 14, and 21% of MOR, with and without Virginiamycin (100 ppm), during 35 d of fattening, 480 one-day old unsexed quails were used, each treatment had 5 replicates with 12 quails/cage. MOR inhibited the growth of bacteria gram (+) and gram (-). The inclusion of MOR in the period from 1 to 14 d inhibited the weight gain (p&lt;0.001), increased feed conversion (p&lt;0.001), without affecting the feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AGP; Antioxidant; Coturnix; Moringa oleifera; Phenolic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100015

Bioactive compound retention in frozen red and yellow Strawberry guava pulps added with L-Ascorbic acid
Provedor de dados: Revista Brasileira de Fruticultura
Autores: Vergara,Lisiane Pintanela; Reissig,Gabriela Niemeyer; Franzon,Rodrigo Cezar; Rodrigues,Rosane da Silva; Chim,Josiane Freitas.
Abstract  Brazil presents a great variety of native fruits, which have aroused commercial interest, such as the strawberry guava. In this sense, many researches have looked for alternatives that allow postharvest availability of fruits, considering that perishability is a limiting factor for its commercialization. The freezing process is an important alternative in the sense of making these fruits available for longer on the market. The use of L-ascorbic acid is a potent protective agent in the stability of bioactive compounds in fruit pulps. The objective of this study was to evaluate potentially bioactive compounds present in red and yellow strawberry guava pulps added with L-ascorbic acid (1% m / m) and verify its effect on retention of these compounds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Native fruits; Psidium cattleianum Sabine; Phytochemicals; Antioxidant; Storage.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000600301

Lipid and selenium sources on fatty acid composition of intramuscular fat and muscle selenium concentration of Nellore steers
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Pereira,Angélica Simone Cravo; Santos,Marcos Veiga dos; Aferri,Gabriela; Corte,Rosana Ruegger Pereira da Silva; Silva,Saulo da Luz e; Freitas Júnior,José Esler de; Leme,Paulo Roberto; Rennó,Francisco Palma.
The objective of this study was to evaluate the effect of lipid and selenium sources in diets for finishing Nellore steers on the fatty acid composition and selenium concentration of the longissimus muscle. Fifty Nellore steers (body weight = 458±39 kg) were assigned to one of six dietary treatments: 1) diet containing sunflower seed and inorganic selenium; 2) sunflower seed and organic selenium; 3) whole cottonseed and inorganic selenium; 4) whole cottonseed and organic selenium; 5) soybeans and inorganic selenium; and 6) soybeans and organic selenium. Diets were formulated with the same amount of nitrogen and calories and supplied once daily to steers in collective pens, with three animals per pen, for 120 d. At the end of the trial, steers were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Cattle; Longissimus; Soybean seed; Sunflower seed; Whole cottonseed.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100009

Antioxidants and dairy production: the example of flax
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Petit,Hélène V.
This manuscript reports on the main problems decreasing productivity of dairy cows (e.g. fatty liver syndrome and poor fertility) and how antioxidants could enhance it. High producing dairy cows are prone to oxidative stress, and the situation can be exacerbated under certain environmental, physiological, and dietary conditions. Antioxidants have important effects on the expression of genes involved in the antioxidant status, which may enhance animal health and reproduction. Moreover, antioxidants may contribute to decrease the incidence of spontaneous oxidized flavour in milk enriched in polyunsaturated fatty acids. Plant lignans are strong antioxidants and flax is the richest source of plant lignans. Flax lignans are converted in the mammalian lignans...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Bovine; Flaxseed; Metabolism.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300035

Sensory profile of warmed-over flavour in tenderloin from steers supplemented with alpha-tocopherol
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Lage,Moacir Evandro; Godoy,Helena Teixeira; Bolini,Helena Maria André; Oliveira,Raphael Rocha de; Rezende,Cíntia Silva Minafra e; Prado,Cristiano Sales.
The objective of the present study was to evaluate the occurrence of warmed-over flavour (WOF) in cooked tenderloin and the influence of alpha-tocopherol on its inhibition. A total of 24 animals were confined, 12 of which received 1200 mg/head/day of alpha-tocopherol acetate for 90 days. Longissimus dorsi muscle cuts (tenderloin) were obtained for sensory profile assessment by nine trained tasters. The tasters evaluated the taste of the meat based on four general and 18 specific attributes. The results of the evaluations were analysed with ANOVA, post-hoc tests of the means (Tukey tests), and principal component analysis (PCA). There was no significant difference in the WOF between the cuts of meat from the supplemented and non-supplemented animals....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Cooking; Lipid oxidation; Rancidity; Storage; Vitamin E.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800016

Use of water-treated black tea waste instead of wheat bran in laying hen diets
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Kaya,Hatice; Çelebi,Şaban; Kaya,Adem; Gül,Mehmet.
ABSTRACT We assessed the effects of different amounts of water-treated black tea waste (BTW) in the diets of laying hens on performance, egg quality, yolk peroxidation, and blood parameters in this study. The experiment lasted for 12 weeks, during which a total of 108 Lohman layers, of 24 weeks old, were randomly allocated to one of six dietary treatments (18 hens each); each treatment consisted of six replicate cages, each containing three hens. Experimental animals were fed a commercial diet that contained 0 (control), 20, 40, 60, 80, and 100% BTW in place of wheat bran. Providing BTW in diets for laying hens, instead of wheat bran, did not have a significant effect on egg production, egg weight, or body weight change. As the amount of BTW in the diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Egg quality; Laying hens; Performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100545

Effects of dietary grape seed on performance and some metabolic assessments in Japanese quail with different plumage colors exposed to heat stress
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Erişir,Zeki; Şimşek,Ülkü Gülcihan; Özçelik,Mehtap; Baykalır,Yasin; Mutlu,Seda İflazoğlu; Çiftçi,Mehmet.
ABSTRACT The objective of this study was to determine the effects of grape seed (GS) supplementation to basal diet on performance, carcass characteristics, some biochemical parameters, and antioxidant status of tissues of Japanese quail in growth phase with different plumage colors exposed to heat stress (HS). A total of 144 eight-day-old Japanese quail including 72 (36 females, 36 males) grey and 72 (36 females, 36 males) golden were used in this study. The quail were kept under HS (16 h at 34 °C, 8h at 22 °C) and thermo-neutral (24 h at 22°C) conditions between 15 and 43 days of age. All quail were fed a basal diet (control) and basal diet supplemented with GS at both 10 g/kg and 20 g/kg ratios. Each feeding treatment was repeated three times including...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Feed additive; Heat stress; Japanese quail.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100201

Effects of spent mushroom compost meal on growth performance and meat characteristics of grower geese
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Chang,Shen-Chang; Lin,Min-Jung; Chao,Yun-Peng; Chiang,Chung-Jen; Jea,Yu-Shine; Lee,Tzu-Tai.
ABSTRACT The objective of this study was to determine the effect of spent mushroom compost (SMC) meal on the growth performance and meat characteristics of geese. The SMC extracts contained 2.49±0.62 mg gallic acid equivalent/g dry weight (DW) and 1.08±0.15 mg quercetin equivalent/g DW of the total phenolic and flavonoid contents. A total of 120 White Roman geese, aged five weeks, were randomly distributed among 12 pens and fed a grower diet ad libitum during the growing period, with each pen containing five males and five females in a completely randomized design. Each treatment comprised three pens (total of 30 geese), including control (corn-soybean meal); supplementation with 5% SMC meal (5% SMC); supplementation with 10% SMC (10% SMC); and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Meat sensory evaluation; White Roman goose.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000600281

Antioxidant effect of the guava byproduct in the diet of broilers in the starter phase
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Oliveira,Maryelle Durães de; Mello,Heloisa Helena de Carvalho; Stringhini,José Henrique; Mascarenhas,Alessandra Gimenez; Arnhold,Emmanuel; Conceição,Edemilson Cardoso da; Martins,Julyana Machado da Silva; Silva Júnior,Adesvaldo José e.
ABSTRACT This work aimed to investigate the antioxidant capacity of the guava agroindustrial waste as a functional additive in broiler feed to improve the performance and meat quality of boilers. The experiment was conducted in a completely randomized design, consisting of four treatments and six replicates with 12 birds. Treatments included different levels of guava byproduct in the feed: 0, 0.5, 1.0, and 1.5%. We evaluated the performance of broilers at 7 and 21 days old. At 21 days old, two birds from each experimental unit were euthanized for intestine histologic evaluation (duodenum, jejunum, and ileum) and breast and deboned thigh samples were collected for analyzes of pH, colorimetry (L*, a*, and b*), and thiobarbituric reactive substances (TBARS)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal-performance indexes; Antioxidant; Intestinal histology; Meat characteristics; Psidium guajava L.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100505

Feeding systems and tocopherol level in the diet and their effects on the quality of lamb meat: a meta-analysis
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Hampel,Viviane da Silva; Poli,Cesar Henrique Espírito Candal; Devincenzi,Thais; Pötter,Luciana.
ABSTRACT The objective of the present study was to evaluate, through a meta-analysis, the effects of feeding systems and tocopherol levels found in the diet of lambs on qualitative characteristics of their meat. A search of the computerised literature in Science Direct databases, PubMed, Scopus, and SciELO virtual library was carried out to select works that evaluated the quality of lamb meat. As a first requirement for inclusion in the meta-analysis, articles were selected with the keywords “tocopherol”, “meat”, and “lamb”. The variables extracted from the articles were classified according to the type of feeding system and tocopherol level in the diet of lambs. Production systems alter the qualitative characteristics of meat. Lambs raised exclusively on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Concentrated; Omega 3; Oxidative stress; Pasture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100711

Semen quality and reproductive performance of boars kept in pens containing conventional coffee husk as a floor covering
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Teles,Mariele Cristina; Pereira,Bárbara Azevedo; Rocha,Luiz Gustavo Pessoa; Resende,Carla Oliveira; Rodrigues,Valéria Vânia; Pereira,Luciano José; Rodríguez-Gil,Joan Enric; Zangeronimo,Márcio Gilberto.
ABSTRACT The objective of this study was to evaluate the putative effects of the use of coffee husk as floor covering on boar semen quality. Sixteen boars were divided into two groups. The first group was held in a conventional system with a compact floor. The second group was kept on a compact floor covered with coffee pods. The experimental period was 60 days. Levels of caffeine and chlorogenic acid in the insemination doses (ID) before and after 96 h of storage at 15 °C and the reproductive performance (litter size and rate of return to estrus) of these doses after their utilization in a standard artificial insemination protocol were evaluated. The ID from the animals kept in pens containing the coffee pods contained 25.4±8.7 µg/mL of caffeine, whereas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; By-product; Caffeine; Pig; Sperm.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000700365

Standardization of the quality control parameters of the Tamarindus indica L. soft extract
Provedor de dados: Revista Cubana de Plantas Medicinales
Autores: Rodríguez-Amado,Jesús; Pérez Rosés,Renato; Escalona-Arranz,Julio César; Lafourcade Prada,Ariadna; Sierra González,Gustavo.
Introduction: Tamarindus indica L or Tamarind as commonly known is a medicinal plant witha broad spectrum of application in medicine. Tamarind is the most useful plant for liver disorders treatment in Cuba and The Caribbean. People use it as decoction and have to take up to four liters a day of this preparation, because the use of alcohol in the Tamarind fluid extracts prevent its use in patient with lever desorders. Objective: the aim of this study was the preliminary establisment of quality control parameters of the Tamarindus indica L. soft extract as a novel alcohol-free active ingredient for solids pharmaceutical formulation. Methods: organoleptics properties, total solids, relative density, pH, and total ashes were stablished. The polyphenols content...
Tipo: Journal article
Palavras-chave: Soft extract; Polyphenols; Flavonoids; Antioxidant; Tamarind; Tamarindus indica.
Ano: 2012
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962012000100012

Quantification, chemical and biological characterization of the saponosides material from Sida cordifolia L. (escobilla)
Provedor de dados: Revista Cubana de Plantas Medicinales
Autores: Velásquez Ballesteros,Oscar Julián; Murillo Perea,Elizabeth; Jairo Méndez,John; Murillo Arango,Walter; Noreña,Diana Alexandra.
Introduction: Sida cordifolia L. (Malvaceae) is a weed about which not much is known in Colombia. This plant is used in folk medicine to treat oral mucosa, blennorrhea, asthma and bronchitis.In Brazil it finds application as an anti-inflammatory,while in Colombia its "baba" is used for treating hair loss, constipation and internal fever, among other ailments. Objectives: to quantify the saponoside content and evaluate its antioxidant and antifungal functionality. Methods: we prepared organic, aqueous and hydroalcoholic extracts from the aerial section of the plant. The saponoside material was quantified by the DNS and p-anisaldehyde methods. The most concentrated extracts were selected for antioxidant and antifungal assays. Results: it was found that Sida...
Tipo: Journal article
Palavras-chave: Sida cordifolia; Saponins; Weed; Antioxidant; P-anisaldhyde.
Ano: 2013
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962013000200013

Acylated anthocyanins from organic purple-fleshed sweet potato (Ipomoea batatas (L.) Lam) produced in Brazil
Provedor de dados: Scientia Agricola
Autores: Jesus,Monalisa Santana Coelho de; Santiago,Manuela Cristina Pessanha de Araújo; Pacheco,Sidney; Gouvêa,Ana Cristina Miranda Senna; Nascimento,Luzimar da Silva de Mattos do; Borguini,Renata Galhardo; Guerra,José Guilherme Marinho; Espindola,José Antonio Azevedo; Godoy,Ronoel Luiz de Oliveira.
ABSTRACT Acylated anthocyanins from a purple-fleshed sweet potato (PFSP), obtained by organic cultivation in Brazil, were characterized after separation by a high performance liquid chromatography-diode array detector (HPLC-PDA). These anthocyanins were manually collected at the detector output, concentrated and injected into a high resolution mass spectrometer (ESI-QTOF-MS2). Twenty-two acylated anthocyanins were detected. Among them, sixteen had been reported in the literature and six, derived from peonidin were reported for the first time in sweet potato roots in this study. These compounds showed molecular ions with accurate mass/charge ratios (m/z) of 909.2081, 961.3010, 961.2571, 963.3345, 1123.2932 and 1179.3862. Although anthocyanins in PFSP have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenolic; Mass spectrometry; Natural dye; Antioxidant.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000400901

Fatty acid profile, color and lipid oxidation of organic fermented sausage during chilling storage as influenced by acid whey and probiotic strains addition
Provedor de dados: Scientia Agricola
Autores: Wójciak,Karolina Maria; Karwowska,Małgorzata; Dolatowski,Zbigniew Józef.
Organic fermented sausages typically spoil during long-term storage due to oxidative rancidity. The application of natural antioxidants to meat stuffing is a major practice intended to inhibit the oxidation process and color changes. This study aimed to assess the effect of two unusual starter cultures: three probiotic strains (Lactobacillus casei LOCK 0900, Lactobacillus casei LOCK 0908 and Lactobacillus paracasei LOCK 0919) and lactic acid bacteria from acid whey on model fermented sausage type products focusing on oxidative stability by measuring instrumental color (L*, a*, b* values), conjugated dienes (CD), TBARS immediately after 21 days of ripening (0) and after 90 and 180 days of refrigerated storage (4 ºC). Determination of fatty acid composition,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxidation stability; Uncured; Functional food; Antioxidant.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200124

Methane mitigation and ruminal fermentation changes in cows fed cottonseed and vitamin E
Provedor de dados: Scientia Agricola
Autores: Nogueira,Ricardo Galbiatti Sandoval; Perna Junior,Flavio; Pereira,Angélica Simone Cravo; Cassiano,Eduardo Cuellar Orlandi; Carvalho,Roberta Ferreira; Rodrigues,Paulo Henrique Mazza.
ABSTRACT: Inherently, ruminant production of methane (CH4), a greenhouse gas (GHG), causes animal energy losses. Cottonseed is a lipid source and is used sometimes to enhance energy density in cattle diets. It also can mitigate enteric CH4. Lipids release peroxides in the rumen, and antioxidants have the ability to neutralize them. Thus, a lipid and antioxidant source can benefit rumen fermentation. The aim of this study was to evaluate rumen fermentation parameters from cows fed cottonseed and vitamin E. Six cannulated cows were arranged in a replicate 3 × 3 latin square. Treatments were: 1) Control, 2) CS (30 % corn replaced by cottonseed) and 3) CSVitE (30 % corn replaced by cottonseed, plus 500 IU VitE). Results were compared by orthogonal contrast....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SCFA; Enteric methane; Oilseed; Antioxidant.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000600401

Nutrient digestibility and changes in feeding behavior of cattle fed cottonseed and vitamin E
Provedor de dados: Scientia Agricola
Autores: Nogueira,Ricardo Galbiatti Sandoval; Perna Junior,Flavio; Pereira,Angélica Simone Cravo; Rodrigues,Paulo Henrique Mazza.
ABSTRACT: High lipid concentration in ruminant diets often harms nutrient digestibility and feed intake; thus, a protected lipid and antioxidant source can be considered as an alternative for improving diet energy without putting animal production at a disadvantage. The aim of this study was to evaluate the dry matter intake (DMI), nutrient digestibility and feeding behavior of cattle fed cottonseed and vitamin E. Six cannulated cows, non-pregnant, non-lactating were distributed in a replicated 3 × 3 Latin Square design. Feed was offered ad libitum twice daily. Treatments were: 1) Control, 2) CS: 30 % cottonseed included; and 3) CSVitE: 30 % cottonseed plus 500 IU VitE included. Data were analyzed by SAS (Statistical Analysis System, v.9.3) and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Oilseed; Ruminant.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200112

สมบัติทางเคมี-กายภาพ ชีววิทยา และสมบัติเชิงหน้าที่ของโปรตีนจากรำข้าวอินทรีย์
Provedor de dados: Thai Agricultural Research Repository
Autores: Kittima Triratanasirichai; Saroat Rawdkuen.
Physico-chemical, biological and functional properties of proteins extracted from organic rice bran with different methods were determined. Rice bran protein (RBP) obtained from enzymatic (phytase-xylanase) extraction showed the lowest color difference (ΔE, P&lt;0.05). Bulk density of RBP was ranged between 0.71-0.73 g/ml (P&gt;0.05). Total soluble solid and pH of RBP obtained from different extraction methods were not significantly different (P&gt;0.05). Sonication method provided the extract with the highest total phenolic content (3.01 mg tannic acid/g RBP), DPPH radical scavenging activity (62.29%), and ferric reducing activity power (FRAP 2.00 mM). The highest protein solubility (48.36%) and water absorption capacity (2.36 g/g sample) was found in the...
Tipo: PhysicalObject
Palavras-chave: Extraction; Rice bran protein; Organic rice bran; Antioxidant; การสกัด; โปรตีนจากรำข้าว; รำข้าวอินทรีย์; สารต้านอนุมูลอิสระ; สมบัติเชิงหน้าที่.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5448

ข้าวลืมผัวจากการวิจัยสู่การใช้ประโยชน์: เทคโนโลยีการผลิตข้าวลืมผัว
Provedor de dados: Thai Agricultural Research Repository
Autores: Acharaporn Na Lampang Noenplab; Kawaporn Phumchoei; Apichart Noenplab; Pongsa Sukserm; Rattapong Meekun; Silawan Chandharabutra; Titima Khantiyawit; Supattana Bureerat.
Luempua is a dark-purple glutinous upland rice belongs to the Mong hilltribe. The origin prior to the time of seed purification was the mountainous area 450 m above sea level. The variety is normally grown in the wet season under upland condition. To obtain the information for appropriate time of sowing and growing with water as for the lowland sowing, Luempua was sown by transplanting in the cement container every 15 days from 2010-2013 at Phitsanulok Rice Research center (PSL). Results revealed that the most appropriate time of sowing is from mid to the end of May and the lowland areas especially those prone to Brown planthopper infestation are not recommended. Seed conservation was carried out at 3 sites i.e. upland farmer’s field, amphoe Khao Kor,...
Tipo: PhysicalObject
Palavras-chave: Luempua rice; Nutrition; Anthocyanin; Antioxidant; Organic production; Brown planthopper; Production technology; Rice variety; Coloured rice; Glutinous rice; Rice production; Cost; ข้าวลืมผัว; คุณค่าโภชนาการ; แอนโทไซยานิน; สารต้านอนุมูลอิสระ; การผลิตแบบอินทรีย์; เพลี้ยกระโดดสีน้ำตาล; เทคโนโลยีการผลิต; ข้าวเหนียวดำ; การผลิตข้าว; วิธีการเพาะปลูก; การใส่ปุ๋ย; การลดต้นทุน.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5676

เครื่องดื่มสำเร็จรูปธัญชาติเสริมสุขภาพด้วยสมุนไพรไทย
Provedor de dados: Thai Agricultural Research Repository
Autores: Chulaluck Charunuch; Nipat Limsangouan; Janpen Saengprakai; Vayuh Sonted; Kassmaporn Puntaburt.
To satisfy the demands of increasingly health - conscious consumers and obtain the  desirable target product using extrusion process, the effect of extrusion conditions including screw speed (300, 350 and 400 rpm), barrel temperature (140, 150 and 160 oC) and feed moisture content (15, 17 and 19%) were investigated on the physical properties (bulk density, color, viscosity, water absorption index, water solubility index and reconstitution index) and antioxidant property (antioxidant activity) of  the instant cereal beverage powders admixed with Thai herbs. A box - behnken design of the response surface methodology (RSM) was employed whereas the experimental datas were modelled by multiple regression and a second order polynomial equation was fitted to each...
Tipo: PhysicalObject
Palavras-chave: Instant cereal beverage powders; Extrusion; Thai herbs; Antioxidant; เครื่องดื่มสำเร็จรูปธัญชาติ; กระบวนการเอกซ์ทรูชัน; เครื่องดื่มเสริมสุขภาพ; สมุนไพรไทย; คุณสมบัติทางกายภาพ; สุขภาพของผู้บริโภค; ฤทธิ์ต้านอนุมูลอิสระ; การยอมรับของผู้บริโภค.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5135

ข้าวพื้นเมืองสายพันธุ์ใหม่ หอมกระดังงา PTNC09002-59
Provedor de dados: Thai Agricultural Research Repository
Autores: Ekkarat Kaewnango; Nitit Saeng-arun; Somboun Suwanno; Amphon Thongchai; Krissana Sirirat; Samreung Saeton; Somsong Chotechuen; Kunya Cheaupun; Sunanta Wongpiyachon; Pakinee Akkaravessapong; Angsutorn Wasusun; Boon-na Nookong; Kantikan Plodplong; Arporn Suksawut; Khun Puttasakoon; Charoon Srisuwan.
Hawm Gra Dung Ngah rice variety was collected from Tak Bai district, Narathiwat province in 2009. The promising line, PTNC09002-59 was pure-line selected from the 59th row out of 200 rows. It is a photoperiod-sensitive, non-glutinous rice flowering in the mid of February, Its height is 159 centimeters with 10 panicle per hill. Its average grain yields under intra-station yield trial in Pattani, farmer field trials in Nhong Chik district, Pattani and in Tak Bai district, Narathiwat  was 501, 385 and 383 kilograms per rai, respectively. PTNC09002-59 responded to nitrogen fertilizer at the rate of 12 kilograms nitrogen per rai. Paddy hull is straw-colored and grain shape is slender. Brown rice is red with 6.33 millimeters grain length. It has moderately...
Tipo: PhysicalObject
Palavras-chave: Hawm Gra Dang Ngah; Photoperiod sensitive; Nutritive value; Antioxidant; Land variety; Blast susceptible; Pure line selection; Rice; Seed quality; ข้าวหอมกระดังงา; ข้าวไวต่อช่วงแสง; คุณค่าทางโภชนาการ; ฤทธิ์ต้านอนุมูลอิสระ; พันธุ์พื้นเมือง; ความต้านทานโรคไหม้; การคัดเลือกสายพันธุ์; ข้าว; การผลิตพืช; สายพันธุ์บริสุทธิ์; คุณลักษณะสายพันธุ์; การทดสอบพันธุ์; คุณภาพเมล็ดพันธุ์; การยอมรับของเกษตรกร.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5674

Effect of microwave drying on antioxidant and saponin in Jiaogulan herb (Gynostemma pentaphyllum)
Provedor de dados: Thai Agricultural Research Repository
Autores: Utama-ang, N.; Chompreeda, P.; Haruthaithanasan, V.; Suwonsichon, T.; Lerdvuthisopon, N.; Khansuwan, U.
Palavras-chave: Effect; Microwave; Drying; Antioxidant; Saponin; Jiaogulan; Herb; Gynostemma pentaphyllum.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4925

Effect of microwave drying on antioxidant and saponin in Jiaogulan herb (Gynostemma pentaphyllum)
Provedor de dados: Thai Agricultural Research Repository
Autores: Utama-ang, N; Chompreeda, P.; Haruthaithanasan, V.; Suwonsichon, T.; Lerdvuthisopon, N.; Khansuwan, U.
Palavras-chave: Effect; Microwave; Drying; Antioxidant; Saponin; Jiaogulan; Herb.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4924

กิจกรรมต้านอนุมูลอิสระและปริมาณสารประกอบฟีนอลิกทั้งหมดในข้าวกล้อง ข้าวกล้องงอก และข้าวฮางงอกของข้าวไทยบางสายพันธุ์
Provedor de dados: Thai Agricultural Research Repository
Autores: Paweena Rattanasena; Prapassorn Bussaman.
Tipo: Collection
Palavras-chave: Antioxidant; Phenolic compound; Brown rice; Pre-germinated brown rice; Pre-germinated rice; Rough rice; Pre-germinated rough rice; Thai rice cultivars; สารต้านอนุมูลอิสระ; สารประกอบฟีนอลิก; ข้าวกล้อง; ข้าวกล้องงอก; ข้าวงอก; ข้าวฮาง; ข้าวฮางงอก; ข้าวสายพันธุ์ไทย.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5394

Physicochemical properties and antioxidant capacity of propolis of stingless bees (Meliponinae) and Apisfrom two regions of Tocantins, Brazil
Provedor de dados: Acta Amazonica
Autores: ARAÚJO,Karuane Saturnino da Silva; SANTOS JÚNIOR,Joaquim Francisco dos; SATO,Marcello Otake; FINCO,Fernanda Dias Bartolomeu Abadio; SOARES,Ilsamar Mendes; BARBOSA,Robson dos Santos; ALVIM,Tarso da Costa; ASCÊNCIO,Sérgio Donizeti; MARIANO,Sandra Maria Botelho.
ABSTRACTThe composition of propolis depends on time, vegetation and the location of the collection area. The objective of this study was to determine the physicochemical characteristics, the concentration of phenol compounds and the antioxidant capacity of propolis of native stingless bees (Meliponinae)and Apis from the State of Tocantins. Extraction with 80% ethanol (v/v) was performed in order to obtain the extracts. Parameters examined were: propolis mass loss by desiccation at 105 ºC, ashes, wax concentration and pH. Furthermore, the propolis antioxidant activity was measured, as well as the total concentration of phenol compounds. The extracts were also analyzed by high performance liquid chromatography. The total concentration of phenol compounds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propolis; Antioxidant; Phenol compounds.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000100061

Effect of Alpinia zerumbet essential oil on the shelf life of tambaqui fillets during short-term refrigerator storage
Provedor de dados: Acta Amazonica
Autores: SOUSA,Ana Karolinne Anastacio de; FOGAÇA,Fabíola Helena dos Santos; ARAUJO,Thais Danyelle Santos; CASTRO,Karina Neoob de Carvalho; PEREIRA,Alitiene Moura Lemos; CANUTO,Kirley Marques; BRITO,Edy Sousa de; MAI,Mônica Giacometti; MAGALHÃES,João Avelar de.
ABSTRACT We investigated the effect of Alpinia zerumbet essential oil on the quality and shelf life of tambaqui (Colossoma macropomum) fillets stored under refrigeration (10.0 ± 0.5 °C) for 14 days. The treatments were A. zerumbet essential oil at 0.75% v v-1 (AEO 0.75%), A. zerumbet essential oil at 1.5% v v-1 (AEO 1.5%) and a control (no essential oil). The sample quality and shelf life were determined by the total psychrotrophic count (TPC) and chemical parameters (pH, total volatile basic nitrogen, centesimal composition and thiobarbituric acid reactive substances - TBARS) at zero, seven and 14 days of storage time. The TPC decreased significantly (p &lt; 0.05) with an A. zerumbetessential oil level of 1.5% until seven days of storage. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Psychrotrophic count; Quality; Fish storage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200152

Benefits of fiber and antioxidant power of rice bran in Vitamin E deficient rats
Provedor de dados: Acta Bioquímica Clínica Latinoamericana
Autores: Aguilar-García,Carlos; Cioccia,Anna María; Gavino,Victor; Gutiérrez,Marlén; Hevia,Patricio.
Dietary fiber requirements are met by only a small fraction of the population. There is need for supplemented foods to fill this gap. Rice bran (RB) is high in fiber and has antioxidant properties. The effects of rice bran fiber on several metabolic indicators and the antioxidant capacity of rice bran in rats was reported. Rats were divided into 4 dietary groups: Vitamin E-sufficient with (+VitE/RB+) or without (+VitE/RB-) rice bran; Vitamin E-deficient with (-VitE/RB+) or without (-VitE/RB-) rice bran. Food intake, growth and feed efficiency were similar in all groups but wet and dry fecal mass of the RB+ groups were 3 times higher than the RB- groups. Blood hemoglobin and liver iron were also similar among all groups. However, the liver VitE...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice bran; Laxation; Antioxidant; Rat liver Vitamin E; Erythrocyte catalase and glutathione reductase; Dietary fiber gap.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100013

Characterization and biological properties of sulfated polysaccharides of Corallina officinalis and Pterocladia capillacea
Provedor de dados: Acta Botanica Brasilica
Autores: Ismail,Mona Mohamed; Amer,Mohamed Saleh.
ABSTRACT Red seaweed possess various sulfated polysaccharides (SPs) that could potentially be exploited as bioactive agents for medical and industrial applications. Crude polysaccharides from the red algae Corallina officinalis (SP1) and Pterocladia capillacea (SP2) were extracted and characterized according to their chemical content and their antioxidant, anti-inflammatory, anticoagulant, antibacterial, antifungal, and antifouling activities. The isolated polysaccharides contained low levels of protein and high levels of carbohydrate and sulfate. The extracted SPs were characterized by Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectral data and revealed that SP1 is composed of carrageenan, while SP2 is composed of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anticoagulant; Antifouling; Antimicrobial; Antioxidant; Polysaccharides; Red seaweed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400623

Plasma fatty acid profile in dairy cows associated with the inclusion of annatto in their diet
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Lima, Clarissa Sampaio de Oliveira; Andrade, Albericio Pereira de; Magalhães, André Luiz Rodrigues; Almeida, Omer Cavalcanti de; Guido,  Sebastião Inocêncio; Valença, Roberta de Lima.
The objective of this study was to evaluate the plasma lipid profile and plasma fatty acids of dairy cows receiving diets supplemented with annatto. A total of 32 Holstein cows (550 kg), distributed in a completely randomized design, were allocated to individual stalls and submitted to following treatments: C0 = no annatto; C4 = inclusion of annatto at 4 g kg-1 dry matter (DM) of diet (0.07 g bixin kg-1 diet); C5 = inclusion of annatto at 5 g kg-1 DM of diet (0.09 g bixin kg-1 diet); and C7 = inclusion of annatto at 7 g kg-1 DM of diet (0.12 g bixin kg-1 diet). Blood samples were collected via epigastric vein puncture, centrifuged, and frozen for subsequent analysis. The results indicate that the inclusion (p &amp;gt; 0.05) of annatto does not decrease the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Bixin; Cholesterol; Linoleic acid; Polyunsaturated fatty acids.
Ano: 2020
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47651

Extraction of Carotenoid Compounds from Saffron stamenUsing Ultrasound Waves
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: einafshar, soodabeh; rohani, roxane; ahmadzadeh ghavidel, reihaneh.
Saffron flowers by products including sepals, petals and stamens have no application in Iran’s food industries; nevertheless stigmas contain a considerable amount of carotenoids withhigh antioxidant properties. In this study carotenoid compounds were extracted by an organic solvent (mixture of N-hexane, ethanol and acetone; 2:1:1 v: v) and ultrasound waves. Ultrasound waves were applied at a frequency of 24 kHz and amplitude of 20, 60 and 100% for5, 10 and 15 minute. All treatments were tested  in triplicates. The extraction efficiency, total carotenoid and phenolic compounds, free radical scavenging and reducing power of Fe III were analyzed. The results showed that ultrasound waves with amplitude of 100% imposed for 15 min caused the highest extraction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Carotenoid; Extraction efficiency; Saffron stamen; Ultrasonic.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3396

The Antioxidant Properties of Compressed Persimmon Fruit using Putrescine Coatings and Polyamine Films
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Azadbakht, Mohsen; Jafarzadeh, Sajad; Varasteh, Faryal; Vahedi Torshizi, Mohammad.
This study was conducted considering the high importance of persimmon's chemical properties and the effect of different factors on its variations during storage and maintaining period. This study attempted to investigate some cases such as the effect of compressive loading parameters at 2 levels of 150 N and 250 N, three types of foam container packaging with polyolefin film, polyethylene terephthalate, and ordinary box and four types of putrescine polyamine coating with concentrations of 1 mM and 2 mM, distilled water and uncoated state, the chemical properties of persimmon fruit including the number of antioxidants, total phenol, flavonoids, vitamin C, pH, acidity and dissolved solids. The results showed that the highest content of total phenol and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Persimmon; Coating; Packaging; Antioxidant; Vitamin C.
Ano: 2022
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7291

Administering ascorbic acid to rats undergoing ageing processes: effects on myosin-V immunoreactive myenteric neurons
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: Mello,Sônia A.; Marese,Angélica C.M.; Brancalhão,Rose M.C.; Zanoni,Jacqueline N.; Natali,Maria Raquel M.
During the ageing process the enteric nervous system undergoes morphofunctional changes, such as enteric neurodegeneration. Neuronal death can be attributed to increase radicals free, and ascorbic acid (AA), known antioxidant, could minimize damage cause by oxidative stress. The objective of this study is to analyse the behaviour of morphoquantative myenteric neurons in the duodenum of adult Wistar rats with aged 90 (C90), 345 (E345) and 428 (E428) days, as well as animals of the same age who received ascorbic acid supplementation for 120 days (EA345 and EA428). Whole-mount preparations of muscle layer from the duodenum of the animals were immunostained by the method myosin V. 80 microscopic fields were quantified (14.8 mm2/animal) and measured 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging; Antioxidant; Enteric nervous system; Immunohistochemistry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100337

Vitamin B6 reduces oxidative stress in lungs and liver in experimental sepsis
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: GIUSTINA,AMANDA D.; DANIELSKI,LUCINÉIA G.; NOVOCHADLO,MICHELE M.; GOLDIM,MARIANA P.S.; JOAQUIM,LARISSA; METZKER,KIUANNE L.L.; CARLI,RAQUEL JACONI DE; DENICOL,TAIS; CIDREIRA,THAINA; VIEIRA,THAYNAN; PETRONILHO,FABRICIA.
Abstract Abstract: Sepsis is a life-threatening organ dysfunction induced by a disrupted host response to infecting pathogens. Inflammation and oxidative stress are intrinsically related to sepsis progression and organ failure. Vitamin B6 is an important cellular cofactor for metabolic processes and has anti-inflammatory and antioxidant properties. We aimed at evaluating the effect of vit B6 on inflammation and oxidative stress markers in the liver and lung of rats subjected to a relevant animal model of polymicrobial sepsis. Adult male Wistar rats were submitted to ﻿cecal ligation and perforation model and immediately after sepsis induction, vit B6 was administered as a single dose (600 mg/kg, subcutaneous). Twenty-four hours later, the lung and liver...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sepsis; Vitamin B6; Oxidative stress; Antioxidant.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700627

Vitamin E and organic selenium for broilers from 22 to 42 days old: performance and carcass traits
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: ALBUQUERQUE,DANIEL M.N.; LOPES,JOÃO B.; FERRAZ,MAÍRA S.; RIBEIRO,MABELL N.; SILVA,SANDRA R.G.; COSTA,ELVÂNIA M.S.; LIMA,DANIELA C.P.; FERREIRA,JEFFERSON D.M.; GOMES,PEDRO E.B.; LOPES,JACKELLINE C.O.
ABSTRACT This study was conducted to evaluate the effect of vitamin E and selenium on performance, viability, productive efficiency, and yields of carcass, major cuts, and organs of broilers from 22 to 42 days submitted to cyclic-heat stress. The experimental design was randomized blocks, in a 2 × 3 factorial arrangement with two levels of selenium (0.1 and 0.3 mg/kg) and three levels of vitamin E (300, 400, and 500 mg/kg), plus a control treatment. Animals were submitted to a natural condition of high cyclic temperature. Organic selenium levels of 0.1 and 0.3 mg/kg associated with 300, 400, and 500 mg/kg of vitamin E were tested. The level of vitamin E did not affect the performance or production efficiency of broilers in the period from 22 to 33 days and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Minerals; Nutrition; Poultry; Productive efficiency; Vitamins.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301259

Ameliorative potential of Vernonia cinerea on chronic constriction injury of sciatic nerve induced neuropathic pain in rats
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: THIAGARAJAN,VENKATA R.K.; SHANMUGAM,PALANICHAMY; KRISHNAN,UMA M.; MUTHURAMAN,ARUNACHALAM.
The aim of the present study is to investigate the ameliorative potential of ethanolic extract of whole plant of Vernonia cinerea in the chronic constriction injury (CCI) of sciatic nerve induced neuropathic pain in rats. Behavioral parameters such as a hot plate, acetone drop, paw pressure, Von Frey hair and tail immersion tests were performed to assess the degree of thermal, chemical and mechanical hyperalgesia and allodynia. Biochemical changes in sciatic nerve tissue were ruled out by estimating thiobarbituric acid reactive substances (TBARS), reduced glutathione (GSH) and total calcium levels. Ethanolic extract of Vernonia cinerea and pregabalin were administered for 14 consecutive days starting from the day of surgery. CCI of sciatic nerve has been...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Calcium; Chronic constriction injury; Reduced glutathione; Thiobarbituric acid reactive substance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301435

Antioxidant potential and cytotoxic activity of two red seaweed species, Amansia multifida and Meristiella echinocarpa, from the coast of Northeastern Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: ALENCAR,DANIEL B. DE; SILVA,SUZETE R. DA; PIRES-CAVALCANTE,KELMA M.S.; LIMA,REBECA L. DE; PEREIRA JÚNIOR,FRANCISCO N.; SOUSA,MÁRCIA B. DE; VIANA,FRANCISCO A.; NAGANO,CELSO S.; NASCIMENTO,KYRIA S. DO; CAVADA,BENILDO S.; SAMPAIO,ALEXANDRE H.; SAKER-SAMPAIO,SILVANA.
Natural antioxidants found in marine macroalgae are bioactive compounds known to play an important role in the prevention of diseases associated with aging cells protecting them against the oxidative damage. The purpose of this study was to evaluate the antioxidant and cytotoxic activity of ethanolic extracts of two species of red seaweeds, Amansia multifida and Meristiella echinocarpa. In vitro antioxidant activity was determined by DPPH radical scavenging assay, ferric-reducing antioxidant power (FRAP) assay, ferrous ion chelating (FIC) assay, β-carotene bleaching (BCB) assay and total phenolic content (TPC) quantification. Cytotoxicity was evaluated with the brine shrimp Artemia sp. lethality test. The TPC values observed in the present study indicated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Bioactive compounds; Cytotoxic; Phenolic compounds; Rhodophyta.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100251

Antioxidant effect of quinoline derivatives containing or not selenium: Relationship with antinociceptive action quinolines are antioxidant and antinociceptive
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: WILHELM,ETHEL A.; FERREIRA,ANA TERESINHA; PINZ,MIKAELA P.; REIS,ANGÉLICA S. DOS; VOGT,ANE G.; STEIN,ANDRE L.; ZENI,GILSON; LUCHESE,CRISTIANE.
ABSTRACT The present study investigated the antioxidant effect of a new class of quinoline derivatives (a-d) on assays in vitro. Lipid peroxidation, thiol peroxidase-like and free radical scavenging activities were determined to evaluate antioxidant activity of compounds. Thiol oxidase-like and δ-aminolevulinate dehydratase activities were performed as a toxicological parameter. A second objective of this study was to evaluate the in vivo antinociceptive effect of the compound with better antioxidant effect and without toxic effects in a model of nociception induced by formalin in mice. In liver, at 100 µM, compound a reduced the lipid peroxidation to the control levels, while compounds c and d partially reduced it. In brain, only compound d partially...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antinociceptive; Antiedematogenic; Anti-inflammatory; Antioxidant; Quinoline.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200457

Chemical, enzymatic and cellular antioxidant activity studies of Agaricus blazei Murrill
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: HAKIME-SILVA,RICARDO A.; VELLOSA,JOSÉ C.R.; KHALIL,NAJEH M.; KHALIL,OMAR A.K.; BRUNETTI,IGUATEMY L.; OLIVEIRA,OLGA M.M.F.
Mushrooms possess nutritional and medicinal properties that have long been used for human health preservation and that have been considered by researchers as possible sources of free radical scavengers. In this work, the antioxidant properties of water extracts from Agaricus blazei Murill, produced by maceration and decoction, are demonstrated in vitro. Resistance to oxidation is demonstrated through three mechanisms: i) inhibition of enzymatic oxidative process, with 100% inhibition of HRP (horseradish peroxidase) and MPO (myeloperoxidase); ii) inhibition of cellular oxidative stress, with 80% inhibition of the oxidative burst of polymorphonuclear neutrophils (PMNs); and iii) direct action over reactive species, with 62% and 87% suppression of HOCl and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaricus blazei Murrill; Antioxidant; Oxidant species; Chemiluminescence; Polymorphonuclear neutrophils.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301073

Scutia buxifolia Reissek essential oil: in vitro antioxidant and antimicrobial activities
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: BOLIGON,ALINE A.; PIANA,MARIANA; BRUM,THIELE F. DE; FROEDER,AMANDA L.F.; BELKE,BIANCA V.; SCHWANZ,THIAGO G.; MARIO,DÉBORA N.; ALVES,SYDNEY H.; ATHAYDE,MARGARETH L.
The volatile oil from the stem bark of Scutia buxifolia (Rhamnaceae) has been obtained by hydrodistillation and analyzed by GC-MS. Twenty-one components were identified representing 99.93 % of the total oil composition, spathulenol (35.87%), β-cubebene (17.26%), germacrene D (6.43%), linalool (5.19%), carvacrol (4.05%) were the main components of S. buxifolia essential oil. Antioxidant and antimicrobial properties of the essential oil were evaluated by free radical scavenging (DPPH) assay and micro broth dilution method, respectively. S. buxifolia essential oil presented interesting radical scavenging activity (IC50 = 15.03 ± 0.11 µg/mL). The antibacterial assay showed that S. buxifolia stem bark essential oil was moderately active against the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scutia buxifolia; Essential oil; Antioxidant; Antimicrobial.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301463

Gastroprotective effect of Byrsonima sericea DC leaf extract against ethanol-induced gastric injury and its possible mechanisms of action
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: Rodrigues,Patrícia A.; Morais,Selene M.; Souza,Carolina M.; Magalhães,Davi V.; Vieira,Ícaro G.P.; Andrade,Geanne M.; Rao,Vietla S.; Santos,Flávia A.
Byrsonima sericea leaves are extensively used in folk medicine in Brazil against gastric disorders. This study investigated the chemical constituents of B. sericea leaf ethanolic extract (BSLE) and its potential gastroprotective activity, with its possible mechanism of the action using ethanol to induce gastric mucosal damage in mice. The phytochemical analysis was carried out to identify the active constituents present in the extract, and the HPLC analysis was performed for the identification of flavonoids. BSLE at oral doses of 125, 250 and 500 mg/kg markedly attenuated the ethanol-evoked gastric lesions by 53.2, 84.9 and 87.6 %, respectively. The BSLE (250 mg/kg) prevented the depletion of gastric mucus and gastric mucosal nonproteic-sulfhydryl groups,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Byrsonima sericea; Flavonoids; Gastroprotection; Mechanisms of action.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100011

Pharmacological perspectives from Brazilian Salvia officinalis (Lamiaceae): antioxidant, and antitumor in mammalian cells
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: GARCIA,CHARLENE S.C.; MENTI,CAROLINE; LAMBERT,ANA PAULA F.; BARCELLOS,THIAGO; MOURA,SIDNEI; CALLONI,CAROLINE; BRANCO,CÁTIA S.; SALVADOR,MIRIAN; ROESCH-ELY,MARIANA; HENRIQUES,JOÃO A.P.
ABSTRACT Salvia officinalis (Lamiaceae) has been used in south of Brazil as a diary homemade, in food condiment and tea-beverage used for the treatment of several disorders. The objective of this study was to characterize chemical compounds in the hydroalcoholic (ExtHS) and aqueous (ExtAS) extract from Salvia officinalis (L.) by gas chromatography-mass spectrometry (GC-MS) and by high-resolution electrospray ionization mass spectrometry (ESI-QTOF MS/MS), evaluate in vitro ability to scavenge the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+), catalase (CAT-like) and superoxide dismutase (SOD-like) activity, moreover cytotoxic by MTT assay, alterations on cell morphology by giemsa and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Apoptosis; Cancer; Chemical compounds; Salvia officinalis (L.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100281

Antifungal and antioxidant activity of fatty acid methyl esters from vegetable oils
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: PINTO,MARIA E.A.; ARAÚJO,STHÉFANE G.; MORAIS,MARCELA I.; SÁ,NÍVEA P.; LIMA,CAROLINE M.; ROSA,CARLOS A.; SIQUEIRA,EZEQUIAS P.; JOHANN,SUSANA; LIMA,LUCIANA A.R.S.
ABSTRACT Fatty acid methyl esters (FAMEs) were obtained from vegetable oils of soybean, corn and sunflower. The current study was focused on evaluating the antifungal activity of FAMEs mainly against Paracoccidioides spp., as well as testing the interaction of these compounds with commercial antifungal drugs and also their antioxidant potential. FAMEs presented small IC50 values (1.86-9.42 μg/mL). All three FAMEs tested showed antifungal activity against isolates of Paracoccidioides spp. with MIC values ranging from 15.6-500 µg/mL. Sunflower FAMEs exhibited antifungal activity that extended also to other genera, with an MIC of 15.6 μg/mL against Candida glabrata and C. krusei and 31.2 μg/mL against C. parapsilosis. FAMEs exhibited a synergetic effect with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal; Antioxidant; Fatty acid methyl esters; Vegetable oils.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401671

In vivo assessment of cyto/genotoxic, antigenotoxic and antifungal potential of Costus spiralis (Jacq.) Roscoe leaves and stems
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SOUSA,WENDEL C. DE; T.S. PAZ,ANDRESSA; ROCHA,JAMIRA D.; CONCEIÇÃO,EDEMILSON C. DA; ALMEIDA,LUCIANE M. DE; CHEN,LEE C.; BORGES,LEONARDO L.; BAILÃO,ELISA F.L.C.
ABSTRACT Costus spiralis is a Brazilian native plant used in popular medicine, but the safety of this therapeutic use needs investigation. So, the aim of this study was to evaluate the cytogenotoxic and antigenotoxic effects of C. spiralis leaves or stems aqueous extracts on Allium cepa root cells. Moreover, a phytochemical screening and an antioxidant and antifungal activities evaluation were performed. C. spiralis aqueous extracts presented cytotoxicity, but no mutagenicity was observed. When the antigenotoxicity was evaluated, C. spiralis leaves aqueous extract presented preventive and modulatory effects on A. cepa root cells, reducing the sodium azide cytogenotoxic effects. In contrast, C. spiralis stems aqueous extract enhanced the sodium azide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium cepa test; Antioxidant; Medicinal plant; Secondary metabolites.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401565

Evaluation of cytogenotoxicity, antioxidant and hypoglycemiant activities of isolate compounds from Mansoa hirsuta D.C. (Bignoniaceae)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: PEREIRA,JOQUEBEDE R.; QUEIROZ,RAPHAEL F.; SIQUEIRA,ERLÂNIA A. DE; BRASILEIRO-VIDAL,ANA CHRISTINA; SANT’ANA,ANTÔNIO E.G.; SILVA,DANIEL M.; AFFONSO,PAULO R.A. DE MELLO.
ABSTRACT Mansoa hirsuta (Bignoniaceae) is a native plant from caatinga in Brazilian semiarid. This plant has been locally used as antimicrobial and hypoglycemiant agents, but their action mechanisms and toxicity remain largely unknown. Therefore, we evaluated the composition and antioxidant, cytoprotective and hypoglycemiant effects of raw extract, fractions and compounds from leaves of M. hirsuta. The cytogenotoxic effects of ursolic and oleanolic acids, the main phytotherapic components of this plant, were assessed. The raw extract and fractions presented steroids, saponins, flavonols, flavanonols, flavanones, xanthones, phenols, tannins, anthocyanins, anthocyanidins and flavonoids. The ethyl acetate fraction inhibited efficiently the cascade of lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Caatinga; Cytotoxicity; Hypoglycemiant; Phytochemistry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100317

In vitro and cellular activities of the selected fruits residues for skin aging treatment
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: LOURITH,NATTAYA; KANLAYAVATTANAKUL,MAYUREE; CHAIKUL,PUXVADEE; CHANSRINIYOM,CHAISAK; BUNWATCHARAPHANSAKUN,PICHAPORN.
ABSTRACT Peel extracts of litchi and rambutan, and that of tamarind seed coat were investigated in relation to their utility in skin-aging treatments. Standardized extracts of tamarind were significantly (p &lt; 0.05) more efficient at O2 •- scavenging (IC50 = 27.44 ± 0.09) than those of litchi and rambutan (IC50 = 29.57 ± 0.30 and 39.49 ± 0.52 μg/ml, respectively) and the quercetin standard (IC50 = 31.88 ± 0.15 μg/ml). Litchi extract proved significantly (p &lt; 0.05) more effective for elastase and collagenase inhibition (88.29 ± 0.25% and 79.46 ± 0.92%, respectively) than tamarind (35.43 ± 0.68% and 57.69 ± 5.97%) or rambutan (31.08 ± 0.38% and 53.99 ± 6.18%). All extracts were safe to human skin fibroblasts and inhibit MMP-2, with litchi extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-industrial waste; Antioxidant; Cellular activities; Cosmetics; Enzyme inhibitions; Fruit crop.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200577

Antioxidant and antimicrobial potential of selected varieties of Piper betle L. (Betel leaf)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SARMA,CHAYANIKA; RASANE,PRASAD; KAUR,SAWINDER; SINGH,JYOTI; SINGH,JOGINDER; GAT,YOGESH; GARBA,UMAR; KAUR,DAMANPREET; DHAWAN,KAJAL.
Abstract Piper betle L., is an evergreen perennial creeper belonging to family Piperaceae and is known to possess numerous medicinal properties. Current study focuses on evaluating antioxidant and antimicrobial potential of betel leaf. For the present study, distilled water, hexane, acetone and ethanolic extracts of two varieties of betel leaves: Meetha paan and Banarasi paan were used. Biochemical tests such as proximate analysis (moisture, ash, protein, lipids, minerals viz., sodium and potassium), antioxidant activity tests (DPPH radical scavenging activity, total phenolics, ascorbic acid, reducing power) and antimicrobial test (antibacterial and antifungal susceptibility test) against four pathogens viz., B. subtilis, E. coli, A. niger and S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piper betle; Piperaceae; Antioxidant; Antimicrobial; Biochemical.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703871

Bioactivities of the ethanol extract from Ageratum fastigiatum branches: antioxidant, antinociceptive and anti-inflammatory
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: DEL-VECHIO-VIEIRA,GLAUCIEMAR; SANTOS,BRUNA C.S.; ALVES,MARIA SILVANA; ARAÚJO,AÍLSON L.A.; YAMAMOTO,CÉLIA H.; PINTO,MÍRIAM A.O.; KAPLAN,MARIA AUXILIADORA C.; SOUSA,ORLANDO V.
ABSTRACT The present study was designed to investigate the antioxidant, antinociceptive and anti-inflammatory activities of the ethanol extract from Ageratum fastigiatum branches. Phytochemical screening and total phenol and flavonoid contents were determined. The antioxidant activity was assessed by 2,2-diphenyl-1-pycrilhydrazin (DPPH) and iron reducing power methods. The antinociceptive effect was evaluated using the acetic acid-induced writhing, formalin, hot plate and tail immersion assays; while the carrageenan-induced paw edema and pleurisy tests were performed to examine the anti-inflammatory activity against acute inflammation. The extract revealed the presence of flavonoids, tannins, coumarins, terpenes, sterols and saponins. Expressive levels of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ageratum fastigiatum; Analgesic; Anti-inflammatory; Antioxidant; Flavonoids; Total phenols.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401471

Melipona mondury produces a geopropolis with antioxidant, antibacterial and antiproliferative activities
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SANTOS,TÁSSIA L.A. DOS; QUEIROZ,RAPHAEL F.; SAWAYA,ALEXANDRA C.H.F.; LOPEZ,BEGOÑA GIMENEZ-CASSINA; SOARES,MILENA B.P.; BEZERRA,DANIEL P.; RODRIGUES,ANA CAROLINA B.C.; PAULA,VANDERLÚCIA F. DE; WALDSCHMIDT,ANA MARIA.
ABSTRACT Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antibacterial, and antiproliferative activities of M. mondury geopropolis, and determined its chemical profile. The antioxidant activity was determined using in vitro ABTS·+, ·DPPH, and β-carotene/linoleic acid co-oxidation methods. The antibacterial activity was determined using a microdilution method with Pseudomonas aeruginosa, Staphylococcus aureus, and methicillin-resistant S. aureus. The antiproliferative effect was determined in tumor cell lines using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial; Antioxidant; Antiproliferative; Geopropolis; Melipona mondury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502247

Effect of Syzygium cumini leaves on laying hens performance and egg quality
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: FREITAS,EDNARDO R.; FERNANDES,DANILO R.; SOUZA,DAVYD H.; DANTAS,FRANCISCO D.T.; SANTOS,REBECA C.; OLIVEIRA,GILSON B.; CRUZ,CARLOS EDUARDO B.; BRAZ,NÁDIA M.; CÂMARA,LORENA F.; NASCIMENTO,GERMANO A.J.; WATANABE,PEDRO H.
ABSTRACT The aim of this study was to evaluate the effect of Syzygium cumini leaves (SCL) in laying hens diets on productive performance, egg quality and lipid oxidation of yolk. A total of 108 Hysex White laying hens were distributed in a completely randomized design with three treatments and six replicates of six birds each. The treatments consisted of SCL inclusion at dietary levels of 0, 5 and 10 g/kg. There was no significant effect of SCL inclusion on feed intake, laying percentage, weight and egg mass, feed conversion ratio, Haugh units, specific gravity, percentage of yolk, albumen and egg shells and shell thickness. However, the inclusion of SCL significantly influenced the yolk color and yolk lipid oxidation measured by TBARS values. Yolk color...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Egg quality; Phytogenic additives; Yolk color.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502479

In vitro antioxidant, DNA-damaged protection and antiproliferative activities of ethyl acetate and n-butanol extracts of Centaurea sphaerocephalaL.
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: LAHNECHE,AMINA M.; BOUCHEHAM,RATIBA; OZEN,TEVFIK; ALTUN,MUHAMMED; BOUBEKRI,NASSIMA; DEMIRTAS,IBRAHIM; BICHA,SABRINA; BENTAMENE,ALI; BENAYACHE,FADILA; BENAYACHE,SAMIR; ZAMA,DJAMILA.
Abstract: This study aimed to evaluate the in vitro antiproliferative and inhibition of oxidative DNA-damage activities of n-butanol (n-BuOH) extract of Centaurea sphaerocephala. The in vitro antioxidant activity of the ethyl acetate (EtOAc) and the n-BuOH extracts of this plant were also assayed. To investigate the antioxidant potential, extracts were tested for their capacity to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH·) and to inhibit lipid peroxidation using the TBARs method. The contents of total phenolics and flavonoids were measured. Additionally, antiproliferative activity and DNA-damage inhibition of the n-BuOH extract was determined using XCELLigence RTCA instrument and photolyzing 46966 plasmid, respectively. The results exhibited that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Centaurea sphaerocephala; Phenolics; Antioxidant; Lipid peroxidation; Antiproliferative; DNA-damaged inhibition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500619

Assessment of Anti-inflammatory and Antioxidant Properties of Safranal on CCI4-Induced Oxidative Stress and Inflammation in Rats
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: ALAYUNT,ÖMER N.; AKSOY,LAÇINE; KARAFAKIOĞLU,YASEMIN S.; SEVIMLI,SEVCAN.
Abstract: The present study aimed to determine the antioxidative and anti-inflammatory effects of safranal on damage induced by CCl4. Experimental animals were divided into five groups. The first group was determined as the control group and no treatment was conducted. Second group rats were administered 1 mL/kg-day CCI4 during the experiment. Rats in Groups 3, 4 and 5 were administered 1 mL/kg-day CCI4 and 25 mg/kg, 50 mg/kg; 100 mg/kg safranal, respectively via gavage. Oxidative-antioxidant parameters, liver function enzymes and inflammatory cytokine levels were determined in liver samples obtained from the rats. Data analysis demonstrated that oxidative stress and inflammation markers were significantly higher in CCI4 administered groups (p&lt;0.05)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; CCI4; Inflammation; Safranal.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300704

Antimicrobial, antioxidant and cytotoxicity potential of Manihot multifida (L.) Crantz (Euphorbiaceae)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: FABRI,RODRIGO L.; SÁ,DANIEL S. DE; PEREIRA,ANA PATRÍCIA O.; SCIO,ELITA; PIMENTA,DANIEL S.; CHEDIER,LUCIANA M.
Manihot multifida (L.) Crantz (Euphorbiaceae) is widely used in popular medicine for the treatment of infected wounds. This study evaluated thein vitro antioxidant and antimicrobial potential of this species against strains of Gram-positive and Gram-negative bacteria and fungi, known to cause infections in humans. The extracts showed minimal inhibitory concentration (MIC) varying from 39 to 2500 µg/mL for antimicrobial activity. The methanolic extract of fruits, aqueous and hexane extracts of leaves showed a very strong activity against Candida albicans(ATCC 18804) with MIC of 39 µg/mL. Furthermore, the methanolic extract of M. multifida leaves exhibited DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging potential with inhibitory concentration (IC50) values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial; Antioxidant; Candida albicans; Cytotoxicity; Manihot multifida.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100303

Counteracting effects on free radicals and histological alterations induced by a fraction with casearins
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: ARAÚJO,ÉVERTON JOSÉ FERREIRA DE; OLIVEIRA,GUILHERME ANTÔNIO LOPES DE; SOUSA,LÍVIA QUEIROZ DE; BOLZANI,VANDERLAN DA SILVA; CAVALHEIRO,ALBERTO JOSÉ; TOME,ADRIANA DA ROCHA; PERON,ANA PAULA; SANTOS,ANDRÉ GONZAGA DOS; CITÓ,ANTONIA MARIA DAS GRAÇAS LOPES; PESSOA,CLÁUDIA; FREITAS,RIVELILSON MENDES DE; FERREIRA,PAULO MICHEL PINHEIRO.
ABSTRACTCasearia sylvestris Swartz is a medicinal plant widely distributed in Brazil. It has anti-inflammatory, antiulcer and antitumor activities and is popularly used to treat snakebites, wounds, diarrhea, flu and chest colds. Its leaves are rich in oxygenated tricyclic cis-clerodane diterpenes, particulary casearins. Herein, we evaluated the antioxidant activities of a fraction with casearins (FC) isolated from C. sylvestrisand histological changes on the central nervous system and livers of Mus musculus mice. Firstly, in vitro studies (0.9, 1.8, 3.6, 5.4 and 7.2 μg/mL) revealed EC50 values of 3.7, 6.4 and 0.16 µg/mL for nitrite, hydroxyl radical and TBARS levels, respectively. Secondly, FC (2.5, 5, 10 and 25 mg/kg/day) was intraperitoneally...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clerodane diterpenes; Casearia sylvestris; Antioxidant; Morphological changes; Toxicity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401791

Carcass characteristics, physicochemical changes and oxidative stress indicators of meat from sheep fed diets with coffee pulp
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Salinas-Rios,T.; Sánchez-Torres-Esqueda,M.T.; Hernández-Bautista,J.; Díaz-Cruz,A.; Nava-Cuellar,C.; Ortega-Cerrilla,M.E.; Cordero-Mora,J.L.; Vaquera-Huerta,H.; Velasco,J.L.F.
The purpose of this study was to determine how feeding sheep coffee pulp affects carcass characteristics and what changes occur in physicochemical, antioxidant capacity and oxidation of the meat during refrigerated storage. The experiment was carried out in 15 Blackbelly lambs weighing an average 22.86±0.76kg. The animals were assigned to three treatments: T0=control diet, T1=diet with 8% coffee pulp, and T2=diet with 16% coffee pulp. After fattening for 56 days, the sheep were slaughtered and the carcasses assessed. The inclusion of 16% coffee pulp in the diet increased carcass dressing from 48.19 to 50.83% and decreased the amount of fat in rumen and intestines from 3.43 to 2.53% (P&lt;0.05). The inclusion of coffee pulp in the diet did not alter the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Carcass; Dressing percent; Fat.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000601901

Supplementation of broiler breeders with fat sources and vitamin e: carry over effect on performance, carcass yield, and meat quality offspring
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Fernandes,J.I.M.; Bordignon,H.L.F.; Prokoski,K.; Kosmann,R.C.; Vanroo,E.; Murakami,A.E.
ABSTRACT The aim of this study was to evaluate two sources of oil (soybean and fish) and four additional levels of vitamin E (0, 150, 250 and 350mg/kg diet) in breeder diets between the 42nd and 56th week of age and its effect on performance and meat quality of offspring. The supplementation of fish oil in the maternal diet increased the deposition of DHA and CLA in egg yolk. From 1 to 35 days of age, intermediate levels of vitamin E resulted in lower weight gain and feed intake. To feed conversion, the best result was obtained supplementing the maternal diet with soybean oil, regardless of vitamin inclusion. In addition, the evaluation of meat quality, the fish oil-supplemented-diet resulted in lower moisture loss of the breast fillets. For maternal diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Breeders; Fatty acid profile; Moisture loss; PUFA.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000300983

High resveratrol or quercetin concentrations reduce the oscillation index of frozen goat semen
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Silva,E.C.B.; Arruda,L.C.P.; Silva,S.V.; Souza,H.M.; Guerra,M.M.P.
ABSTRACT The aim of this study was to evaluate the effect of different concentrations of trans-resveratrol or quercetin on the ability of goat sperm to withstand being frozen. Six pools of semen obtained from six male goats were processed with different concentrations of resveratrol or quercetin (Experiment 1: 0, 15, 25, 50, 75 or 100µM resveratrol; Experiment 2: 0, 15, 25, 50, 75 or 100µM quercetin) and frozen. After thawing, the semen was evaluated for sperm kinematics, plasma membrane and acrosome integrity, morphology and oxidative stress following 0 and 1h of incubation. Immediately after thawing (0h), wobble (oscillation index) in the groups treated with 100µM of quercetin or resveratrol was lower (P&lt;0.05) than in those treated with 0 and 25µM...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Flavonoid; No flavonoid; Oxidative stress; Semen freezing.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000501237

The use of reduced glutathione (GSH) as antioxidant for cryopreserved sperm in dogs
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Angrimani,D.S.R.; Nichi,M.; Brito,M.M.; Kawai,G.K.V.; Rui,B.R.; Losano,J.D.A.; Vieira,N.M.G.; Francischini,M.C.P.; Cruz,D.S.G.; Queiroz-Hazarbassanov,N.; Massoco,C.O.; Vannucchi,C.I.
ABSTRACT The aim of this study was to evaluate the effect of supplementation with different concentrations of reduced glutathione GSH (0; 5; 7.5; 10mM) in the extender for cryopreservation in dogs with evaluations performed after glycerolization (chilled) and thawing (thawed). For this purpose, we used 8 dogs and two semen collections were performed in a weekly interval, totaling 16 semen samples. The sperm were analyzed by automatic sperm motility (CASA) and flow cytometry analysis of mitochondrial potential (JC1 dye) and membrane/acrosome integrity (FITC-PI dyes). We evaluated subjectively the membrane and acrosome integrity, mitochondrial activity and DNA integrity. Seminal plasma was evaluated for lipid peroxidation (TBARS concentration). Chilled and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reactive oxygen species; Cryopreservation; Antioxidant; Canine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000200419

Effects of transrectal medicinal ozone in horses - clinical and laboratory aspects
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Jaramillo,F.M.; Vendruscolo,C.P.; Fülber,J.; Seidel,S.R.T.; Barbosa,A.P.; Baccarin,R.Y.A.
ABSTRACT Ozone (O3) therapy has been used for medical procedures for centuries; however, there are no extensive studies on its utilization in horses. This study aimed to evaluate the application of transrectal O3 on horses by physical and laboratorial evaluation, and production of reactive oxygen species (ROS). Sixteen healthy horses were separated in two groups: a control group (CG) and a group treated with O3 (TG). The TG animals received 1L of an oxygen and O3 mixture transrectally. The initial dose was 10µg/ml for the first two applications, 15μg/ml for the following two applications, and 20μg/ml for the next six applications. The CG animals received 1L of oxygen transrectally. In TG animals no variations in the physical examination were detected;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Red blood cell counts; Horse; Ozone therapy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000100056

Distribution of selenium in sheep treated with dipheny diselenide
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Leal,M.L.R.; Rocha,J.B.T.; Corte,C.L.D.; Aires,A.R.; Rocha,J.F.X.; Zanatta,R.S.; Carpes,J.L.S.; Szinwelski,G.A.; Stefanello,S.; Pivoto,F.L.
ABSTRACT The aim of the present study was to report the in vivo distribution of selenium in sheep. For this, animals were allocated into two groups (control group and treated group) and kept in metabolic cages for a period of 37 days. The treated group received a single dose (6µmol/kg) of Diphenyl Diselenide, intravenously. Plasma and erythrocytes samples were collected at different times. Adipose tissue, muscles (latissimusdorsi, semitendinosus, and supra-scapular) heart, liver, lung, kidney, intestine and brain were sampled at 30 days post-treatment, in order to determine the selenium concentration. The results demonstrated that the selenium, from the Diphenyl Diselenide group, was higher in erythrocytes (4.8mg/L, six hours post-treatment) when compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Ovine; Selenium; Tissue.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000401017

Effect of β-mercaptoetanol and cysteine on post-thawing quality and oxidative activity of ram sperm and on the viability of vitrified sheep embryos
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Pradieé,J.; Cardoso,T.F.; Silva,E.F.; Gonçalves,A.O.; Gastal,G.D.A.; Rosa,C.E.; Mondadori,R.G.; Pegoraro,L.M.C.; Vieira,A.D.; Lucia Jr.,T.
ABSTRACT The effects of β-mercaptoethanol (BME) and cysteine on the viability and oxidative activity of ram sperm after thawing and on development in vitro and viability of vitrified sheep embryos were evaluated. Ejaculates from four rams were pooled and extended, composing six treatments: no antioxidants; 2mM BME; 5mM BME; 2mM BME and 5mM cysteine; 5mM BME and 5mM cysteine; and 5mM cysteine. Sperm motility, membrane and acrosome integrity, mitochondrial functionality, production of reactive oxygen species and total antioxidant capacity were similar across treatments (P&gt;0.05). A medium with no antioxidant presented cleavage and blastocyst development rates (60.3% and 33.6%, respectively) similar (P&gt;0.05) to those of a medium with 50μM BME and 600μM...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sheep embryos; Antioxidant; Reactive oxygen species; Frozen ram sperm; Vitrification.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000501309

Oocyte aspiration and in vitro embryo production in Jersey cows with selenium-supplemented diet
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Moraes,G.V.; Azevedo,J.R.; Carneiro,T.C.; Cavalieri,F.L.B.; Mataveli,M.; Rossi,R.M.; Santos,T.C.
The effects of selenium (Se) in Jersey cows' diet on the aspiration of oocytes and production of embryos in vitro were studied. Groups with five Jersey cows received 3.2mg or 9.6mg Se daily, provided in the feed concentrate. Six follicular aspirations were carried out every 15 days, using only the last 5. The oocytes were classified, and standard procedures were carried out for maturation, fertilization and cultivation. The total number of oocytes (35.11±2.65 vs 23.10±2.16) and degree 1 oocytes (11.61±2.65 vs 4.75±0.97) were higher in the group that received 9.6mg Se and the quantity of naked oocytes (3.23±0.87 vs 6.22±1.18) was lower in this group. The aspirated oocytes from the cows treated with 9.6mg Se/day resulted in higher (P&lt;0.05) embryo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle dairy; Antioxidant; Glutathione peroxidase; In vitro fertilization; Oocyte quality.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000400001

Addition of chlorogenic acid and caffeine during the processing of cooled boar semen
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Pereira,B.A.; Rocha,L.G.P.; Teles,M.C.; Silva,W.E.; Barbosa,J.A.; Rabelo,S.S.; Uchoa,A.S.; Rodrıguez-Gil,J. E.; Pereira,L.J.; Zangeronimo,M.G.
ABSTRACT A study was conducted to evaluate the effect of chlorogenic acid (ChA) added pre-cooling and its combination with caffeine added during warming on cooled-stored boar semen parameters. Ten ejaculates were diluted in commercial extender with or without 4.5mg/ml ChA and stored at 15°C. After 0, 24 and 72 hours of storage, aliquots of these doses were taken and incubated at 37°C in the presence or absence of 8.0mM caffeine. Semen quality was evaluated after 10 and 120 minutes of incubation. The ChA increased (P &lt;0.01) the sperm motility, viability, acrosomal integrity and the percentage of spermatozoa with high mitochondrial activity (PMHA), however, decreased (P &lt;0.01) the malondialdehyde (MDA) concentration. Caffeine increased (P&lt;0.05) the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Boar semen storage; Metabolic activator; Methylxanthine; Polyphenol.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000200489

Antiulcer activity of ethanolic extract of Encholirium spectabile Mart. ex Schult &amp;amp; Schult f. (Bromeliaceae) in rodents
Provedor de dados: Biological Research
Autores: Moraes de Carvalho,Katharinne I; Fernandes,Hélio B; Frota Machado,Flávia D; Oliveira,Irisdalva S; Oliveira,Francisco A; Nunes,Paulo Humberto M; Lima,Julianeli T; Silva Almeida,Jackson R G; Meneses Oliveira,Rita C.
This study evaluated the antiulcer activity of an ethanolic extract of Encholirium spectabile (ES-EtOH) by using different standard experimental models of induced acute gastric ulceration. ES-EtOH (100 mg/kg p.o) protected the gastric mucosa against ulceration that was induced by absolute ethanol (53%), ethanol/HCl (75 %), ibuprofen (52 %) and ischemia/reperfusion (43 %). It also restored catalase activity and non-protein sulfhydryl group concentration in the gastric wall of mice that had been treated with ethanol. The pre-treatment of mice with N-nitro-L-arginine (70 mg/kg i.p.) abolished the protective activity of ES-EtOH, which indicates that prostaglandins, antioxidant compounds and nitric oxide synthase activity are involved in the gastroprotective...
Tipo: Journal article
Palavras-chave: Antioxidant; Antiulcer activity; Encholirium spectabile; Bromeliaceae.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400011

Antioxidant isolated from Schisandra propinqua (Wall.) Baill
Provedor de dados: Biological Research
Autores: HUANG,FENG; XU,LIJIA; GANGGANG,SHI.
Schisandra propinqua (Wall.) Baill.(Schisandraceae) is widely used as a Chinese folk medicine. In this study, activity-guided fractionation of the ethanol extract from the stem of Schisandra propinqua led to the isolation of four extracts. Subsequently, a neolignan 4,4-di(4-hydroxy-3-methoxyphenly)-2,3-dimethylbutanol was isolated from the EtOAc part of the stem of Schisandra propinqua, the free radical scavenging activities of which were researched in vitro. The present work demonstrated that extracts and pure compound possessed scavenging activities to DPPH, superoxide anions and hydroxy radical, and could depress lipid peroxidation reaction induced by oxygen radical produced by the Fe2+/cysteine system in vitro. This suggests that the traditional...
Tipo: Journal article
Palavras-chave: Antioxidant; Free radical; Lipid peroxidation; Schisandra propinqua.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000300009

Anti-Iipase and antioxidant properties of 30 medicinal plants used in Oaxaca, México
Provedor de dados: Biological Research
Autores: Villa-Ruano,Nemesio; Zurita-Vásquez,Guilibaldo G; Pacheco-Hernández,Yesenia; Betancourt-Jiménez,Martha G; Cruz-Durán,Ramiro; Duque-Bautista,Horacio.
We report the results of in vitro anti-lipase and antioxidant assays using crude ethanolic extracts from 30 plants grown in Oaxaca, México. Anti-lipase tests were performed by using porcine pancreatic lipase (PPL) [EC 3.1.1.3] from Affymetrix/USB. The extracts of Solanum erianthum, Salvia microphylla, Brungmansia suaveolens and Cuphea aequipetala showed up to 60% PPL inhibition. The effect of these extracts on the kinetic parameters of PPL (Km= 0.36 mM, and Vmax=0.085 mM min -1) revealed that the alcoholic preparations of S. erianthum and C. aequipetala engendered a non-competitive inhibition (Vmax=0.055 mM min -1; Vmax= 0.053 mM min -1), whereas those of S. microphylla and B. suaveolens produced a mixed inhibition (Km= 0.567 mM, Vmax=0.051 mM min _1;...
Tipo: Journal article
Palavras-chave: Phytotherapy; Anti-obesity; Antioxidant; Oaxacan ethnobotany.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200006

Investigations of anticholinestrase and antioxidant potentials of methanolic extract, subsequent fractions, crude saponins and flavonoids isolated from Isodon rugosus
Provedor de dados: Biological Research
Autores: Zeb,Anwar; Sadiq,Abdul; Ullah,Farhat; Ahmad,Sajjad; Ayaz,Muhammad.
BACKGROUND: Based on the ethnomedicinal uses and the effective outcomes of natural products in various diseases, this study was designed to evaluate Isodon rugosus as possible remedy in oxidative stress, alzheimer's and other neurodegenerative diseases. Acetylecholinestrase (AChE) and butyrylcholinesterase (BChE) inhibitory activities of crude methanolic extract (Ir.Cr), resultant fractions (n-hexane (Ir.Hex), chloroform (Ir.Cf), ethyl acetate (Ir.EtAc), aqueous (Ir.Aq)), flavonoids (Ir.Flv) and crude saponins (Ir.Sp) of I. rugosus were investigated using Ellman's spectrophotometric method. Antioxidant potential of I. rugosus was determined using DPPH, H2O2 and ABTS free radicals scavenging assays. Total phenolic and flavonoids contents of plant extracts...
Tipo: Journal article
Palavras-chave: Anticholinesterase; Antioxidant; Flavonoids; Phenolics; Saponins; Isodon rugosus.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100070

Assessment of the phytochemical constituents and antioxidant activity of a bloom forming microalgae Euglena tuba
Provedor de dados: Biological Research
Autores: Chaudhuri,Dipankar; Ghate,Nikhil Baban; Deb,Shampa; Panja,Sourav; Sarkar,Rhitajit; Rout,Jayashree; Mandal,Nripendranath.
BACKGROUND: Unstable generation of free radicals in the body are responsible for many degenerative diseases. A bloom forming algae Euglena tuba growing abundantly in the aquatic habitats of Cachar district in the state of Assam in North-East India was analysed for its phytochemical contents, antioxidant activity as well as free radical scavenging potentials. RESULTS: Based on the ability of the extract in ABTS•+ radical cation inhibition and Fe3+ reducing power, the obtained results revealed the prominent antioxidant activity of the algae, with high correlation coefficient of its TEAC values to the respective phenolic and flavonoid contents. The extract had shown its scavenging activity for different free radicals and 41.89&amp;#8201;±&amp;#8201;0.41...
Tipo: Journal article
Palavras-chave: Euglenoid; Phytochemicals; Free radical scavenging; Antioxidant; Reducing power.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100024

Increasing the rate of drying reduces metabolic imbalance, lipid peroxidation and critical water content in radicles of garden pea (Pisum sativum L.)
Provedor de dados: Biological Research
Autores: Ntuli,Tobias M; Pammenter,Norman W; Berjak,Patricia.
Orthodox seeds become desiccation-sensitive as they undergo germination. As a result, germinating seeds serve as a model to study desiccation sensitivity in plant tissues. The effects of the rate of drying on the viability, respiratory metabolism and free radical processes were thus studied during dehydration and wet storage of radicles of Pisum sativum. For both drying regimes desiccation could be described by exponential and inverse modified functions. Viability, as assessed by germination capacity and tetrazolium staining, remained at 100% during rapid (&lt; 24 h) desiccation. However, it declined sharply at c. 0.26 g g¹ dm following slow (c. 5 days) drying. Increasing the rate of dehydration thus lowered the critical water content for survival. Rapid...
Tipo: Journal article
Palavras-chave: Antioxidant; Desiccation; Drying rate; Free radical processes; Lipid peroxidation; Metabolism; Respiration; Pisum sativum; Seed storage.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200002

Gastroprotective effect of the ethanolic extract of Parkia platycephala Benth. leaves against acute gastric lesion models in rodents
Provedor de dados: Biological Research
Autores: Fernandes,Hélio B; Silva,Francilene V; Passos,Flávia Franceli B; Bezerra,Roosevelt D S; Chaves,Mariana H; Oliveira,Francisco A; Meneses Oliveira,Rita C.
Parkia platycephala Benth. (Leguminosae - Mimosoideae), popularly known as "visgueira", fava bean tree or "fava-de-bolota", is widely found in the Northern and Northeastern regions of Brazil. Its pods are used as cattle food supplement in the drought period. Compounds with a gastroprotective activity were obtained from the genus Parkia. Therefore, this study aimed at investigating the gastroprotective effect of the ethanolic extract of Parkia platycephala Benth. leaves (Pp-EtOH), as well as evaluating its possible mechanisms of action in experimental ulcer induction models. Lesions were induced by absolute ethanol, ethanol-HCl, ischemia-reperfusion and indomethacin in rodents. Pp-EtOH showed a protective effect in the lesion models (66, 48 and 52 %,...
Tipo: Journal article
Palavras-chave: Antioxidant; Ethanol; Gastroprotection; Nitric oxide; Parkia platycephala; Ulcer.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400010

Estimation of antioxidant, antimicrobial activity and brine shrimp toxicity of plants collected from Oymyakon region of the Republic of Sakha (Yakutia), Russia
Provedor de dados: Biological Research
Autores: Paudel,Babita; Bhattarai,Hari Datta; Chan Kim,Il; Lee,Hyoungseok; Sofronov,Roman; Ivanova,Lena; Poryadina,Lena; Yim,Joung Han.
BACKGROUND: Several plants are reported to be produced various biological active compounds. Lichens from the extreme environments such as high altitude, high UV, drought and cold are believed to be synthesized unique types of secondary metabolites than the other one. Several human pathogenic bacteria and fungi have been muted into drug resistant strains. Various synthetic antioxidant compounds have posed carcinogenic effects. This phenomenon needs further research for new effective drugs of natural origin. This manuscript aimed to screen new source of biological active compounds from plants of subarctic origin. RESULTS: A total of 114 plant species, including 80 species of higher plants, 19 species of lichens and 15 species of mosses, were collected from...
Tipo: Journal article
Palavras-chave: Antimicrobial; Antioxidant; Brine shrimp; DPPH; Lichen; Moss.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100010

Antioxidant, Antibacterial activity and Brine shrimp toxicity test of some Mountainous Lichens from Nepal
Provedor de dados: Biological Research
Autores: Paudel,Babita; Datta Bhattarai,Hari; Prasad Pandey,Durga; Seoun Hur,Jae; Gyu Hong,Soon; Kim,Il-Chan; Han Yim,Joung.
A total of twenty four lichen species belonging to six families were collected from mountainous region of Nepal. The methanol extracts of each species were tested for antimicrobial and antioxidant activitiesin vitro. It was found that extracts of twenty one lichen species were active againstB. subtilis and seven species were active againstS. aureus. Similarly, in DPPH assay, three speciesPeltigera sp.,Cladonia sp., andCanoparmelia sp. showed comparable activity with commercial standard, BHA. In ABTS+ assay, extracts ofParmoterma sp.,Ramalina sp.,Peltigera sp. andCladonia sp. showed stronger activity than ascorbic acid. The observed data after comparison with previously published reports indicated that the high altitude lichens contain stronger antioxidant...
Tipo: Journal article
Palavras-chave: Antibacterial; Antioxidant; Nepal lichens; Free radicals.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000400010

Wine grape pomace flour improves blood pressure, fasting glucose and protein damage in humans: a randomized controlled trial
Provedor de dados: Biological Research
Autores: Urquiaga,Inés; D'Acuna,Sonia; Pérez,Druso; Dicenta,Sara; Echeverria,Guadalupe; Rigotti,Attilio; Leighton,Federico.
BACKGROUND: The Mediterranean diet is a healthy diet with positive scientific evidence of preventing chronic diseases. Bioactive components support the healthy properties of the Mediterranean diet. Antioxidants and fiber, two components of the Mediterranean diet, are key functional nutrients for healthy eating and nutrition. Wine grape pomace is a rich source of these dietary constituents and may be beneficial for human health. Our hypothesis was that the intake of red wine grape pomace flour (WGPF) prepared from red wine grapes (Cabernet Sauvignon variety) reduced the metabolic syndrome in humans. To evaluate the effect of WGPF on components of metabolic syndrome we design a 16-week longitudinal intervention study. Thirty-eight males, 30-65 years of age,...
Tipo: Journal article
Palavras-chave: Antioxidant; Dietary intervention; Fiber; Metabolic syndrome; Oxidative stress; Wine grape pomace.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100049

Antioxidant, antimicrobial, toxicity and analgesic properties of ethanol extract of Solena amplexicaulis root
Provedor de dados: Biological Research
Autores: Kabir,Md Golam; Rahman,Md Monsor; Ahmed,Nazim Uddin; Fakruddin,Md; Islam,Saiful; Mazumdar,Reaz Mohammad.
BACKGROUND: This study was subjected to investigate different pharmacological properties of ethanol extract ofSolena amplexicaulis root. RESULTS: The extract contains flavonoid, alkaloid, saponin and steroid compounds. The extract exhibited excellent antioxidant activity in DPPH radical scavenging activity. The extract also showed potent activity in brine shrimp lethality bioassay. The LC50 value was found to 44.677 µg/ml. The extract showed better anti-bacterial activity against gram-negative bacteria. In antifungal assay, the maximum 79.31% of anti-mycotic activity was observed against Aspergillus ochraceus while minimum 44.2% against Rhizopus oryzae. MIC value ranged between 1500 - 3000 µg/ml. The extract was found moderately toxic with a 24-hr LD50...
Tipo: Journal article
Palavras-chave: Solena amplexicaulis; Antioxidant; Antimicrobial; Acute toxicity.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100036

Phytochemical Profile and Qualification of Biological Activity of an Isolated Fraction of Bellis perennis
Provedor de dados: Biological Research
Autores: Costa Marques,Thiago H; Santos De Melo,Cassio H; Fonseca De Carvalho,Rusbene B; Costa,Luciana M; De Souza,Alexandre A; David,Jorge M; De Lima David,Juceni P; De Freitas,Rivelilson M.
This study describes the isolation and identification of apigenin-7-O-ghicopyranoside, a flavonoid isolated from the flowers of Bellis perennis L., Asteraceae, an species with a broad spectrum of biological activities. The in vitro antioxidant activity and the inhibition of the enzyme acetylcholinesterase were evaluated. The flavonoid showed strong in vitro antioxidant potential, because of the capacity of removal of hydroxyl radicals and nitric oxide, and also prevented the formation of thiobarbituric acid-reactive substances. These parameters were inhibited at the highest concentration of ApG at rates of 77.7%, 72% and 73.4%, respectively, in addition to inhibiting acetylcholinesterase, suggesting potential use in the treatment of neurodegenerative...
Tipo: Journal article
Palavras-chave: Acetylcholinesterase; Antioxidant; Bellis perennis; Flavonoid.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300002

Plant Polyphenol Antioxidants and Oxidative Stress
Provedor de dados: Biological Research
Autores: URQUIAGA,INES; LEIGHTON,FEDERICO.
In recent years there has been a remarkable increment in scientific articles dealing with oxidative stress. Several reasons justify this trend: knowledge about reactive oxygen and nitrogen species metabolism; definition of markers for oxidative damage; evidence linking chronic diseases and oxidative stress; identification of flavonoids and other dietary polyphenol antioxidants present in plant foods as bioactive molecules; and data supporting the idea that health benefits associated with fruits, vegetables and red wine in the diet are probably linked to the polyphenol antioxidants they contain.In this review we examine some of the evidence linking chronic diseases and oxidative stress, the distribution and basic structure of plant polyphenol antioxidants,...
Tipo: Journal article
Palavras-chave: Oxidative stress; Antioxidant; Plant polyphenol; Flavonoid; Chronic diseases; Diet.
Ano: 2000
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000200004

Toxicity mechanisms of onion (Allium cepa) extracts and compounds in multidrug resistant erythroleukemic cell line
Provedor de dados: Biological Research
Autores: Votto,Ana P. S; Domingues,Beatriz S; de Souza,Michele M; da Silva Júnior,Flavio M. R; Caldas,Sergiane S; Filgueira,Daza M. V. B; Clementin,Rosilene M; Primel,Ednei G; Vallochi,Adriana L; Furlong,Eliana B; Trindade,Gilma S.
Onion (Allium cepa) is being studied as a potential anticancer agent, but little is known regarding its effect in multidrug resistance (MDR) cells. In this work, the cytotoxicity of crude onion extract (OE) and fractioned extract (aqueous, methanolic and ethyl acetate), as well as some onion compounds (quercetin and propyl disulfide) were evaluated in Lucena MDR human erythroleukemic and its K562 parental cell line. The capacity of OE to induce apoptosis and/or necrosis in these cells, the possible participation of oxidative stress and DNA damage were also assessed. Similar sensitivities were obtained for both tumoral cells, however only OE caused significant effects in the cells. In K562 cells, a significant increase of apoptosis was verified while the...
Tipo: Journal article
Palavras-chave: Antioxidant; Apoptosis and/or necrosis; DNA damage; MDR phenotype; Onion (Allium cepa); Tumoral cell.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400007

Antioxidant effect of 5-amino salicylic acid on copper-mediated LDL oxidation
Provedor de dados: Biological Research
Autores: LÓPEZ-ALARCÓN,CAMILO; SPEISKY,HERNÁN; LISSI,EDUARDO.
The antioxidant effect of 5-Aminosalicylic acid (5-ASA) on copper-mediated LDL oxidation was followed either by the emitted chemiluminiscence (CL) or by UV-vis spectroscopy. 5-ASA addition extends the lag phase in a concentration-dependent manner without changes in the rate of the process in the autoaccelerated phase. The antioxidant behavior of 5-ASA was very similar to that of Trolox, a very efficient water soluble antioxidant. The copper-binding capacity of 5-ASA was evaluated by UV-visible spectroscopy. The addition of copper to a 5-ASA solution increases the absorbance at 332 nm and generates a new band at 298 nm. These changes in the UV-vis spectra indicate formation of a complex between 5-ASA and copper. However, LDL protection by 5-ASA is unrelated...
Tipo: Journal article
Palavras-chave: 5-Aminosalicylic acid; Antioxidant; LDL oxidation.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200006

In vitro antioxidant properties, free radicals scavenging activities of extracts and polyphenol composition of a non-timber forest product used as spice: Monodora myristica
Provedor de dados: Biological Research
Autores: Moukette,Bruno Moukette; Pieme,Constant Anatole; Njimou,Jacques Romain; Biapa,Cabral Prosper Nya; Marco,Bravi; Ngogang,Jeanne Yonkeu.
BACKGROUND: Excessive production of free radicals causes direct damage to biological molecules such as DNA, proteins, lipids, carbohydrates leading to tumor development and progression. Natural antioxidant molecules from phytochemicals of plant origin may directly inhibit either their production or limit their propagation or destroy them to protect the system. In the present study, Monodora myristica a non-timber forest product consumed in Cameroon as spice was screened for its free radical scavenging properties, antioxidant and enzymes protective activities. Its phenolic compound profile was also realized by HPLC. RESULTS: This study demonstrated that M. myristica has scavenging properties against DPPH',OH',NO', and ABTS'radicals which vary in a dose...
Tipo: Journal article
Palavras-chave: Antioxidant; Radical scavenging; HPLC; Monodora myristica; Non-timber forest product.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100015

Evaluation of phenolic profile, antioxidant and anticancer potential of two main representants of Zingiberaceae family against B164A5 murine melanoma cells
Provedor de dados: Biological Research
Autores: Danciu,Corina; Vlaia,Lavinia; Fetea,Florinela; Hancianu,Monica; Coricovac,Dorina E; Ciurlea,Sorina A; M &amp;#350;oica,Codru&amp;#355;a; Marincu,Iosif; Vlaia,Vicentiu; Dehelean,Cristina A; Trandafirescu,Cristina.
BACKGROUND: Curcuma longa Linnaeus and Zingiber officinale Roscoe are two main representatives ofZingiberaceae family studied for a wide range of therapeutic properties, including: antioxidant, anti-inflammatory, anti-angiogenic, antibacterial, analgesic, immunomodulatory, proapoptotic, anti-human immunodeficiency virus properties and anticancer effects. This study was aimed to analyse the ethanolic extracts of Curcuma rhizome (Curcuma longa Linnaeus) and Zingiber rhizome (Zingiber officinale Roscoe) in terms of polyphenols, antioxidant activity and anti-melanoma potential employing the B164A5 murine melanoma cell line. RESULTS: In order to evaluate the total content of polyphenols we used Folin-Ciocâlteu method. The antioxidant activity of the two...
Tipo: Journal article
Palavras-chave: Curcuma longa Linnaeus; Zingiber officinale Roscoe; Polyphenols; Antioxidant; Melanoma.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100001

Interaction of Olive Oil Phenol Antioxidant Components with Low-density Lipoprotein
Provedor de dados: Biological Research
Autores: LAMUELA-RAVENTÓS,ROSA M; GIMENO,EVA; FITÓ,MONTSE; CASTELLOTE,ANA-ISABEL; COVAS,MARIBEL; DE LA TORRE-BORONAT,M. CARMEN; LÓPEZ-SABATER,M. CARMEN.
Phenolic compounds have shown to inhibit LDL oxidation in vitro and ex vivo; however, they are hydrosoluble compounds while LDL is a lipoprotein. Analysis of phenolic compounds in LDLs by HPLC is necessary to demonstrate their binding capacity to lipoproteins. We developed and validated a solid phase extraction method (SPE) that allowed us the purification of LDL samples and their analysis by HPLC. This methodology allowed us to demonstrate the in vitro binding capacity of tyrosol, one of the main phenolic compounds in olive oil, to LDL. In the intervention dietary study with volunteers, food rich in phenolic compounds affected LDL composition. Changes in LDL phenolics composition are not observed after the short-term ingestion of food rich in phenolic...
Tipo: Journal article
Palavras-chave: Antioxidant; LDL; Olive oil; Oxidation; Phenol; Tyrosol.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000200011

Effect of microalga Spirulina platensis (Arthrospira platensis) on hippocampus lipoperoxidation and lipid profile in rats with induced hypercholesterolemia
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Bertolin,Telma Elita; Pilatti,Dayane; Giacomini,Ana Cristina Vendrametto Varrone; Bavaresco,Caren Serra; Colla,Luciane Maria; Costa,Jorge Alberto Vieira.
Studies have been conducted on microalga Spirulina platensis (Arthrospira platensis) due to its therapeutic potential in several areas, including the capacity for preventing and decreasing the damages caused by hyperlipidemia and the antioxidant activity. The aim of the study was to evaluate the effect of microalga Spirulina platensis on hippocampus lipoperoxidation and lipid profile in rats with induced hypercholesterolemia during 60 days. The measurement of hippocampus lipoperoxidation did not demonstrate significant difference (p&gt;0.05) when Spirulina platensis was added to hypercholesterolemic diet. The evaluation of lipid profile showed that the administration of the microalga in therapeutic and preventive ways led to a significant protective effect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spirulina; Arthrorspira; Lipids; Cholesterol; Antioxidant.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500024

Phenolic compounds and antioxidant activity of rice
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Walter,Melissa; Marchesan,Enio.
The aim of this work was to study the phenolic compounds identified in rice, their antioxidant activity and their potential beneficial effects on health. In vitro and in vivo studies evaluating the rice grains with different pericarp colour (light brown, red and black) showed potential beneficial effects on health related to the polyphenol content of the grain, such as reduction of oxidative stress, aid in the prevention of cancer, cardiovascular diseases and complications of diabetes, among others.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice; Red rice; Black rice; Polyphenols; Antioxidant; Biological effect.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000200020

Anti-Helicobacter pylori and Anti-inflammatory Properties of Eugenia uniflora L.
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Monteiro,Jessica Raquel Borges; Ardisson,Juliana Santa; Athaydes,Brena Ramos; Gonçalves,Rita de Cássia Ribeiro; Rodrigues,Ricardo Pereira; Kuster,Ricardo Machado; Kitagawa,Rodrigo Rezende.
Abstract Helicobacter pylori is a bacterium that reaches half of the world population and it’s recognized as the main cause of chronic gastritis and peptic ulcer. In this study, we evaluated the anti-H. pylori, antioxidant and immunomodulatory activities of the methanolic (MeOH) extract of Eugenia uniflora leaves and chemical profile. Anti-H. pylori activity was evaluated by spectrophotometric broth microdilution technique by determining the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC), in addition to the evaluation of the effect on the urease enzyme. The antioxidant activity was evaluated by capturing O2 •-, HOCl e NO• radicals. The immunomodulatory effect was evaluated on the cytokines TNF-α, IL-6 and on nitric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eugenia uniflora; Helicobacter pylori; Antioxidant; Immunomodulation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100424

Chemical Composition and Biological Activities of The Essential Oil And Anatomical Markers Of Lavandula Dentata L. Cultivated In Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Justus,Barbara; Almeida,Valter Paes de; Gonçalves,Melissa Marques; Assunção,Daniele Priscila da Silva Fardin de; Borsato,Debora Maria; Arana,Andres Fernando Montenegro; Maia,Beatriz Helena Lameiro Noronha Sales; Paula,Josiane de Fátima Padilha de; Budel,Jane Manfron; Farago,Paulo Vitor.
ABSTRACT Lavandula dentata, popularly known as lavender, is commonly used in traditional medicine for the treatment of digestive and inflammatory disorders. The objective of this study was to analyzed the chemical oil composition, antioxidant and antimicrobial activities of the essential oil and anatomical markers of the leaf and stem of L. dentata cultivated in South Brazil. Essential oil showed an antioxidant activity similar to rutin and gallic acid when analyzed by phosphomolybdenum method. However, by the free radical DPPH and ABTS methods, it showed a slight potential antioxidant. Essential oil presented 1,8-cineol (63%) as major component, antimicrobial activity against Gram-positive, Gram-negative bacteria strains and Candida albicans, by broth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Antimicrobial; Antioxidant; Lamiaceae; Quality control; Volatile oil.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100441

Evaluation of Gamma Irradiation Effect on the Oxidative Stress Factors in Septic Rats Treated With Iranian Plant Essential Oils
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Fatemi,Faezeh; Yazdi,Atefeh Jalali; Ghanooni,Shirin; Zolfaghari,Mohammad Reza.
ABSTRACT Cuminum cyminum L. (CM), Zataria multiflora Boiss. (ZM) and Mentha piperita L. (MP) are traditional medicinal plants with various pharmacological properties. This study was designed to assess the role of gamma irradiation -a modern decontamination method- in hepatoprotective effects of their essential oil (E.Os) in septic rats induced by experimental cecal ligation and puncture (CLP) model. The rats were divided into 20 groups; sham-operated (SOP); CLP; CLP + CM, ZM and MP (E.Os) (100 &amp; 200 mg/kg b.w) and CLP + gamma irradiated (10 and 25 kGy) E.Os (100 &amp; 200 mg/kg b.w) as treatment groups. All E.Os were injected i.p immediately after sepsis induction. 24 hour after CLP, the rats were sacrificed and the liver tissue was examined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oils; Oxidative stress; Antioxidant; CLP; Gamma irradiation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100312

Rosemary and Pitanga Aqueous Leaf Extracts On Beef Patties Stability under Cold Storage
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Vargas,Flávia Carolina; Arantes-Pereira,Lucas; Costa,Patrícia Argemira da; Melo,Mariza Pires de; Sobral,Paulo José do Amaral.
ABSTRACT Because processing and storage conditions affect several beef quality attributes, the food industry uses a variety of synthetic antioxidants. However, some synthetic antioxidants have been questioned regarding its safety, and thus the interest in using natural antioxidants in food products is increasing. This paper aimed at assessing leaf aqueous extracts of Rosemary (Rosmarinus officinalis Linnaeus) and Pitanga (Eugenia uniflora Linnaeus) as antioxidants in beef cold storage. After 48h storage, patties added of Rosemary leaf extracts showed increased pH. Patties added of Pitanga extracts had the lowest a* color values. Oxymyoglobin levels were significantly higher for Negative control, than for Pitanga treatment. The 10% extract addition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Myoglobin; Color; Oxidation; Lipid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100514

Co-production of Proteases and Bioactive Protein Hydrolysates from Bioprocessing of Feather Meal
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Bernardo,Bernardete da Silva; Ramos,Rodrigo Ferraz; Callegaro,Kelly; Daroit,Daniel Joner.
Abstract: Feather meal conversion through submerged cultivations with Bacillus strains (CL33A, CL14) yielded proteases and protein hydrolysates. After 4-day (CL33A) and 10-day (CL14) cultivations, protease activities reached 461 U/mL; hydrolysates presented antioxidant (radicals-scavenging, 57-77%; Fe2+-chelation, 14-28%; Fe3+-reduction) and antidiabetic (dipeptidyl peptidase-IV inhibition, 49-52%) potentials. The obtained bioproducts present prospective commercial/industrial applications.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus; Bioprocess; Enzyme; Antioxidant; Antidiabetic.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100220

High-yield production of scutellaria radix flavonoids (baicalein, baicalin and wogonin) by liquid-culture of Scutellaria baicalensis root-derived cells
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Ohtsuki,Takashi; Himeji,Mika; Fukazawa,Harumi; Tanaka,Miho; Yamamoto,Hisako; Mimura,Akio.
Production of baicalein, baicalin and wogonin by liquid culture of Scutellaria baicalensis cells derived from the plant root was studied. The maximum production obtained were 119 mg/L of baicalein at two week, 1372 mg/L of baicalin at eight week, and 14 mg/L of wogonin at two week. In addition, the production of baicalin was drastically increased to 1000 mg/L level at 3-week culture, and the extremely high production rate (339 mg/L•week) was obtained. In the comparison of total antioxidative activities among baicalein, baicalin and wogonin, evaluated by thiocyanate method, it was suggested that the location of hydroxyl groups both at 5- and 6-position contributed to enhancement of radical scavenging activity, and/or methoxylation at 8-position diminished...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Flavonoids; Liquid culture; High-yield production; Scutellaria baicalensis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200005

Anti-Quorum Sensing Potential of Antioxidant Quercetin and Resveratrol
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Erdönmez,Demet; Rad,Abbas Yousefi; Aksöz,Nilüfer.
ABSTRACT Quorum sensing system plays an active role in the regulation of pathogenicity of many microorganisms. Inhibition of pathogenicity or virulence factors will increase the success of treatment by preventing the development of antibiotic resistance. In this study, anti-quorum sensing activities of quercetin and resveratrol compounds, which have antioxidant property without damaging to host, have been determined via using biosensor bacteria: Chromobacterium violaceum ATCC 12472 and Chromobacterium violaceum CV026. As quorum sensing inhibitors, quercetin and resveratrol's cutting off the bacterial communication will prevent the treatment failures caused by the development of bacterial resistance. The development of layered drugs with antioxidant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-quorum sensing; Resveratrol; Quercetin; Antioxidant.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100403

The response of young and adult rats to the riboflavin supplementation
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: França,Camille Feitoza; Vianna,Lucia Marques.
The aim of this article was to study the response of young and adult rats on the supplementation of diet with riboflavin. Twenty-four young and adult normotensives (Wistar) male rats, subdivided into two groups: treated (10mg riboflavin/Kg of body weight) and control (receiving vehicle) were daily evaluated for physical and behavioural aspects. Systolic blood pressure was determined twice a week and liver toxicity was investigated it the end of treatment. Data were evaluated using one-way ANOVA and p&lt;0.05 was significant. There were no changes on general health aspects of the treated rats; however, the supplementation provoked a significant (p&lt;0.05) systolic blood pressure reduction.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Riboflavin; Antioxidant; Wistar.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400015

Isolation, Characterization, Antioxidant, Antimicrobial and Cytotoxic Effect of Marine Actinomycete, Streptomyces Carpaticus MK-01, against Fish Pathogens
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Subramanian,Dharaneedharan; Kim,Min-Sun; Kim,Dong-Hwi; Heo,Moon-Soo.
ABSTRACT Present study aim to evaluate the antimicrobial, antioxidant and cytotoxic potential of crude extract of Marine Streptomyces carpaticus MK-01 isolated from seawater collected from Daejeong-cost of Jeju Island. About 24 actinomycetes strains were isolated and subjected to morphological and molecular analysis that confirmed the isolate as S. carpaticus MK-01. Crude ethyl acetate extract of MK-01 strain showed extensive antibacterial activity against Gram-positive fish pathogenic bacteria namely Streptococcus iniae and S. parauberis with a maximum zone of inhibition (0.92±0.03mm) was recorded against S. parauberis at the minimum extract concentration (3.12µg/ml). The MK-01 ethyl acetate extract shows dose dependant significant increase in antioxidant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinomycete; Streptomyces carpaticus MK-01; Antioxidant; Cytotoxicity; Jeju Island.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100437

Antioxidant properties of Spirulina (Arthospira) platensis cultivated under different temperatures and nitrogen regimes
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Colla,Luciane Maria; Furlong,Eliana Badiale; Costa,Jorge Alberto Vieira.
The main aim of this work was to investigate the effects of temperature and nitrogen concentration on the antioxidant potential of extracts from Spirulina (Arthospira) platensis biomass. S. platensis biomass obtained at 35ºC and with 1.875 g.L-1 or 2.5 g.L-1 of sodium nitrate in the culture medium presented higher concentrations of phenolic compounds. The antioxidant potential of methanol extracts of biomass on the enzymatic browning caused by peroxidase were 29 and 35%, respectively, being the reduction related to the amount of phenolic compounds present in this extract.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Phenolic compounds; Spirulina (Arthospira) platensis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100020

Antioxidant effect of phycocyanin on oxidative stress induced with monosodium glutamate in rats
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Bertolin,Telma Elita; Farias,Daniele; Guarienti,Cíntia; Petry,Fernanda Tais Souza; Colla,Luciane Maria; Costa,Jorge Alberto Vieira.
The objective of this work was to study the antioxidant effect of phycocyanin on the oxidative stress induced by monosodium glutamate in the rats. The tests were performed with 32 rats of Wistar breed, divided into four groups, which were administered saline solution of phycocyanin, monosodium glutamate and monosodium glutamate plus phycocyanin. Sulfhydryl groups and the secondary substances derived from lipid oxidation were determined through the level of TBA. The evaluation of these values and the level of sulfhydryl showed that the administration of phycocyanin presented significant antioxidant effect (p &lt; 0.05) reducing the oxidative stress induced by the monosodium glutamate in vivo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Oxidative stress; Phycocyanin.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400012

Antidiabetic Effect of Oleuropein from Olea europaea Leaf against Alloxan Induced Type 1 Diabetic in Rats
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Qadir,Nadir Mustafa; Ali,Khabat Anwar; Qader,Suhailah Wasman.
This study have been designed to study the effect of extracted pure oleuropein from Oleaeuropaealeaf against alloxan induced type 1 diabetic rats.Diabetic male ratwas induced by injectingsingle subcutaneous injection of 100 mg/kg b.wof alloxan.Respectively, pure oleuropein compound (5, 10, 15 and 20 mg/kg.b.w)was orally administered once per a day during a period of 40 days ofexperiment.Then, the serum blood was collected for the determination of glucose level,haematological analysis, enzymatic and non-enzymatic antioxidant. Further, pancreatic tissue was evaluated for histological examination. Oleuropein showed a significant rolein attenuating the blood glucose levels and elevation of in-vivo antioxidantafter treating diabetic rats with 5 and 10 mg/kg....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oleuropein; Type 1 Diabetic; Alloxan; Antioxidant; Blood glucose and HBA1C.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100322

Protective Effects of Geraniol on Long Term Renal Ischemia/Reperfusion Injury in Rats
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Can,Senanur; Canbek,Mediha.
Abstract Possible protective effects of geraniol, known as antioxidant properties, were analyzed biochemically and histologically on experimental long-term renal ischemia/reperfusion I/R injury in rats. This study used 3-4 months old male Wistar albino rats and were divided into 4 groups (n = 7) by random selection: Group I (Sham Group), Group II (I/R+SF), Group III (I/R+50 mg/kg geraniol), and Group IV (I/R+100 mg/kg geraniol). A right nephrectomy was performed in all groups under anesthesia. Groups I and II were inoculated with SF (1 ml/kg) and Groups III and IV were inoculated with 50 mg/kg and 100 mg/kg of geraniol, injected intraperitoneally. For Groups II, III, and IV, I/R durations were determined to be 60 mins ischemia and 24 hours reperfusion. At...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ischemia; Reperfusion; Geraniol; Antioxidant; Protective effects; Rat.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100314

Protective Effect of Carvacrol Against Oxidative Stress and Heart Injury in Cyclophosphamide-Induced Cardiotoxicity in Rat
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Cetik,Songul; Ayhanci,Adnan; Sahinturk,Varol.
Possible protective effects of carvacrol (Car) against cyclophosphamide (CP)-induced cardiotoxicity was examined in this study. Experimental groups of the rats were randomly divided into 13 groups,each including seven animals: Group 1 (control) treated with saline; groups 2, 3, and 4 treated with 50, 100, or 150 mg/kg of CP, respectively; group 5 treated with 0.5 mL olive oil; groups 6 and 7 treated with 5.0 and 10 mg/kg of Car, respectively; groups 8, 9, or 10 treated with respective CP plus 5.0 mg/kg of Car; and groups 11, 12, or 13 treated with respective CP plus 10 mg/kg of Car. Serum alanine transaminase (ALT),aspartat transaminase (AST), lactate dehydrogenase (LDH), malondialdehyde (MDA),creatine kinase-MB (CK-MB), total oxidant state (TOS),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyclophosphamide; Oxidative stress; Cardiotoxicity; Carvacrol; Antioxidant; Rat.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000400569

Torularhodin and Torulene: Bioproduction, Properties and Prospective Applications in Food and Cosmetics - a Review
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Zoz,Liliana; Carvalho,Julio Cesar; Soccol,Vanete Thomaz; Casagrande,Thais Costa; Cardoso,Ligia.
Torularhodin and torulene are two widespread microbial carotenoids with relatively few studies, as compared to other nutraceutical carotenoids such as β-carotene, lycopene and astaxanthin. Several genera of microorganisms produce it in high concentration (up to 0.1% of the cell dry weight), probably as a protection against photooxidation and free radicals. These pigments, which differ by a terminal carboxylic group, have provitamin-A activity and, being red, have potential use as food and cosmetic color additives. Several factors affect the biosynthesis of these substances, including: the composition of culture media, light irradiation, which may enhance the carotenoid production up to 25% of the non-irradiated cultures, and temperature, which changes the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carotenoid; Antioxidant; Microorganism; Biopigment.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000200278

Influence of High Light Intensity and Nitrate Deprivation on Growth and Biochemical Composition of the Marine Microalgae Isochrysis galbana
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Mishra,Neha; Prasad,Sheo Mohan; Mishra,Neetu.
Abstract Isochrysis galbana is a brown microalgae widely used as a feed for marine organism in aquaculture. The aim of present study is to investigate the growth, biochemical composition, fatty acid profile, photosynthetic parameters and antioxidant activity (radical scavenging activity) of Isochrysis galbana cells cultivated under different levels (sub-optimum; 50 ± 1.5,optimum; 125 ± 2.5 and supra-optimum; 325 ± 3.5 µmol photons m-2 s -1) of photosynthetic active radiation (PAR), and subsequently treated with different concentration of nitrate deprivation (8mM, 2mM and 0.5mM). The experiment was carried out under controlled conditions utilizing a factorial design 3x3 (light intensity and nitrate concentration). The result depicts that PAR positively...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isochrysis galbana Photosynthetically active radiation Nitrate deprivation Biochemical composition Pigments; Antioxidant.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100426

Spirulina platensis Enhances the Beneficial Effect of Exercise on Oxidative Stress and the Lipid Profile in Rats
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Mazzola,Daiane; Fornari,Fernando; Vigano,Gabriela; Oro,Tatiana; Costa,Jorge Alberto Vieira; Bertolin,Telma Elita.
ABSTRACT This study aimed to evaluate the effect of Spirulina platensis and moderate exercise on oxidative stress and lipid profiles in the rats. Forty male Wistar rats were allocated to the following 10-week treatments, three times a week: exercise (E, 30 min swimming),S. platensis (SP, 26 mg/Kg); exercise andSpirulina (ES); and control (C). Outcomes were Thiobarbituric Acid Reactive Substances (TBARS) in serum and brain, and cholesterol and triglycerides (TG) in serum. Rats treated with exercise showed lower brain TBARS than the controls, mostly in association withS. platensis. In the groups E and ES, serum TBARS decreased after intervention. Compared with the controls, both E and ES prevented an increase in cholesterol and reduced triglycerides. Results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exercise; Antioxidant; Cholesterol; Lipid peroxidation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600961

Polyphenols From Cutch Tree ( Acacia catechu Willd.): Normalize In Vitro Oxidative Stress and Exerts Antiproliferative Activity
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Kumar,Rakesh; Arora,Rohit; Mahajan,Jyoti; Mahey,Sonia; Arora,Saroj.
ABSTRACT Oxidative stress, being the main cause of most of the human diseases, has always been the highlight of research worldwide. This stress can be overcome by administration of natural polyphenols. The Acacia catechu Willd. has many refrences available in Ayurveda as important disease curative plant. Its leaves are investigated for ameliorating oxidative stress in present work. Leaves of A. catechu were extracted with 80% methanol to get methanol extract (AME). It was assessed for antioxidant activity using DPPH, ABTS, CUPRAC, ferric ion reducing, superoxide scavenging and peroxyl radical scavenging assays. DNA protective activity was also investigated using plasmid nicking assay. Further, antiproliferative activity was determined using MTT assay in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acacia catechu; Antioxidant; Antiproliferative; UHPLC; MTT.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100303

Antioxidant properties of some filamentous green algae (Chaetomorpha Genus)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Farasat,Massoumeh; Khavari-Nejad,Ramazan-Ali; Nabavi,Seyed Mohammad Bagher; Namjooyan,Foroogh.
The antioxidant activity and the contents of total phenolics and flavonoids were quantified in the methanolic extracts of four Chaetomorpha species including C. aerea, C. crassa, C. linum and C. brachygona. Eight samples of Chaetomorpha plants were collected from five locations along the northern coasts of the Persian Gulf in south of Iran from December 2010 until October 2011. Methanolic extracts of the seaweeds were assessed for their antioxidant activity using DPPH radical scavenging assay. C. linum showed highest antioxidant potential with a relatively low IC50 (1.484 ± 0.168 mg mL-1), the highest flavonoid content (18.177 ± 2.238 mg RE g-1 ) and a relatively high content of phenolics (2.895 ± 0.415 mg GAE g-1) in comparison with the other species. C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Phenolics; Flavonoid; DPPH; Green algae; Chaetomorpha.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600005

Preventive Effects of Ellagic Acid on Nucleus Tractus Solitarius Electrical Activity and Oxidative Stress Altered by Cerebral Global Ischemia/Reperfusion in Rat
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Nejad,Khojasteh Hoseiny; Sarkaki,Alireza; Dianat,Mahin; Farbood,Yaghoob; Badavi,Mohammad; Gharib-Naseri,Mohammad Kazem.
ABSTRACT Cerebral ischemia commonly occurs when the blood flow to the entire brain or some part of the brain is disrupted. Global cerebral ischemia attenuates the nucleus tractus solitaries (NTS) EEG rhythm, increases the free radicals production and brain inflammation. Ellagic acid (EA) has antioxidative and anti-inflammatory effects against neural damages. The aim of this study was to evaluate the role of ellagic acid on EEG power in the global cerebral ischemia.Rats were divided into four groups: SO (sham) received normal saline, EA+SO, I/R (normal saline + ischemia/reperfusion), and EA + I/R. EA (100 mg/kg, dissolved in normal saline) or normal saline was administered orally (gavage) for 10 days. Animal underwent to 20 minutes of ischemia followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ellagic acid; EEG; Antioxidant; Cerebral ischemia/reperfusion; Rat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100446

Polyphenols From Cutch Tree (Acacia catechu Willd.): Normalize In Vitro Oxidative Stress and Exerts Antiproliferative Activity
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Kumar,Rakesh; Arora,Rohit; Mahajan,Jyoti; Mahey,Sonia; Arora,Saroj.
ABSTRACT Oxidative stress, being the main cause of most of the human diseases, has always been the highlight of research worldwide. This stress can be overcome by administration of natural polyphenols. The Acacia catechu Willd. has many refrences available in Ayurveda as important disease curative plant. Its leaves are investigated for ameliorating oxidative stress in present work. Leaves of A. catechu were extracted with 80% methanol to get methanol extract (AME). It was assessed for antioxidant activity using DPPH, ABTS, CUPRAC, ferric ion reducing, superoxide scavenging and peroxyl radical scavenging assays. DNA protective activity was also investigated using plasmid nicking assay. Further, antiproliferative activity was determined using MTT assay in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acacia catechu; Antioxidant; Antiproliferative; UHPLC; MTT.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100316

Effects of aerial exposure on antioxidant defenses in the brown mussel Perna perna
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Almeida,Eduardo Alves de; Bainy,Afonso Celso Dias.
Investigations were carried out to evaluate the antioxidant defenses in digestive gland of mussels Perna perna held in air for 4 hours, exposed to air for 4 hours followed by submersion in water for 30 minutes, and constantly submerged for 4.5 hours. No differences were observed in CAT and GPx activities and in the levels of total GSH. Mussels exposed to air had significantly higher SOD activity, possibly related to a preparative mechanism of defense against oxidative stress during reoxygenation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Hypoxia; Mussel; Perna perna; Aerial exposure.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300007

Effects of Yucca Extract on Feed Efficiency, Immune and Antioxidative Functions in Broilers
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Su,Jun-Ling; Shi,Bin-Lin; Zhang,Peng-Fei; Sun,Deng-Sheng; Li,Ti-Yu; Yan,Su-Mei.
Effects of yucca extract (YE) on feed efficiency, immune and antioxidative function in Arbor Acres broilers were studied. One hundred and twenty-eight fourteen-day-old broiler chickens were randomly divided into four treatments with four replicates of 8 birds each. These four diets were formulated by adding 0, 100, 200 and 300 mg/kg YE to the basal diet. The results showed that: diets supplemented with 100 and 200 mg/kg YE increased average body weight gain, feed efficiency, IgG, IgM, T-AOC, CAT and SOD levels, and have positive effects on inducing immune organs' maturation. In addition, 100 mg treatment mainly improved the feed efficiency whereas 200 mg treatment mainly acted on immunity and anti-oxidation. In conclusion, YE can be used as a feed additive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yucca product; Chicken; Feed efficiency; Immunity; Antioxidant.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100504

Evaluation of cytotoxicity and biological activities in extracellular polysaccharides released by cyanobacterium Arthrospira platensis
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Challouf,Rafika; Trabelsi,Lamia; Ben Dhieb,Rym; El Abed,Omeya; Yahia,Ali; Ghozzi,Khamissa; Ben Ammar,Jihen; Omran,Hela; Ben Ouada,Hatem.
The aim of this work was to evaluate the cytotoxicity of Arthrospira platensis Extracellular Polymeric Substances (EPS) for colon cancer and kidney cell lines. Results showed that EPS were free from cytotoxic effects. A variety of solvents were assessed for their ability to extract the bioactive ingredients from EPS. Methanol gave the highest yield (75.75%) than other solvents. The extracts were tested for activities against a collection of Gram+/- bacteria. The methanol extract exhibited a more potent activity than the other organic extracts, whereas the aqueous extract was active against Staphylococcus epidermis (Gram+) and Salmonella typhimurium (Gram-). Finally, The extracts were also tested for the antioxidant activity, using the Trolox Equivalent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyanobacteria; Exoplysaccharides; Cytotoxicity; Antibacterial; Antioxidant; Activity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400024

Serum ascorbic acid concentration in patients with acute Falciparum malaria infection: possible significance
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Hassan,Garba Ibrahim; Gregory,Ubom; Maryam,Haruna.
Falciparum malaria infection is associated with significant destruction of erythrocytes. This leads to the release of toxic metabolic products, including oxidant compounds.We measured the serum concentration of the antioxidant, ascorbic acid, in 129 patients presenting with acute falciparum malaria infection and in 65 healthy individuals. None of the study subjects administered any form of ascorbic acid supplementation within one week prior to participation in this study. The mean serum ascorbate concentration in infected adult males (n = 49, age range 18-50 years) was found to be 2.02 ± 0.20 mg/dL, and it was 2.03 ± 0.24 mg/dL in infected adult females (n = 56, age range 18-50 years). These values were significantly greater than the serum ascorbate levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malaria; Ascorbate; Antioxidant.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000500007

Superoxide: a two-edged sword
Provedor de dados: Brazilian Journal of Medical and Biological Research
Superoxide (O2-) is the compound obtained when oxygen is reduced by one electron. For a molecule with an unpaired electron, O2- is surprisingly inert, its chief reaction being a dismutation in which it reacts with itself to form H2O2 and oxygen. The involvement of O2- in biological systems was first revealed by the discovery in 1969 of superoxide dismutase, an enzyme that catalyzes the dismutation of O2-. Since then it has been found that biological systems produce a bewildering variety of reactive oxidants, all but a few arising ultimately from O2-. These oxidants include O2- itself, H2O2 and alkyl peroxides, hydroxyl radical and other reactive oxidizing radicals, oxidized halogens and halamines, singlet oxygen, and peroxynitrite. These various oxidants...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: NADPH oxidase; Superoxide; Oxidative stress; Antioxidant; Regulation; Host defense.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000200001

The antioxidant action of Polypodium leucotomos extract and kojic acid: reactions with reactive oxygen species
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Gomes,A.J.; Lunardi,C.N.; Gonzalez,S.; Tedesco,A.C.
Two natural products Polypodium leucotomos extract (PL) and kojic acid (KA) were tested for their ability to scavenge reactive oxygen species (·OH, ·O2-, H2O2, ¹O2) in phosphate buffer. Hydroxyl radicals were generated by the Fenton reaction, and the rate constants of scavenging were 1.6 x 10(9) M-1 s-1 for KA and 1.0 x 10(9) M-1 s-1 for PL, similar to that of ethanol (1.4 x 10(9) M-1 s-1). With superoxide anions generated by the xanthine/hypoxanthine system, KA and PL (0.2-1.0 mg/ml) inhibited ·O2-dependent reduction of nitroblue tetrazolium by up to 30 and 31%, respectively. In the detection of ¹O2 by rose bengal irradiation, PL at 1.0 mg/ml quenched singlet oxygen by 43% relative to azide and KA by 36%. The present study demonstrates that PL showed an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polypodium leucotomos extract; Kojic acid; Antioxidant; Reactive oxygen species.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001001100018

Inflammation induced by increased frequency of intermittent hypoxia is attenuated by tempol administration
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Zhang,J.; Zheng,L.; Cao,J.; Chen,B.; Jin,D.
The levels of serum inflammatory cytokines and the activation of nuclear factor kappa B (NF-κB) and hypoxia inducible factor-1α (HIF-1α) in heart tissues in response to different frequencies of intermittent hypoxia (IH) and the antioxidant tempol were evaluated. Wistar rats (64 males, 200-220 g) were randomly divided into 6 experimental groups and 2 control groups. Four groups were exposed to IH 10, 20, 30, or 40 times/h. The other 2 experimental groups were challenged with IH (30 times/h) plus tempol, either beginning on day 0 (IH30T0) or on day 29 (IH30T29). After 6 weeks of challenge, serum levels of tumor necrosis factor (TNF)-α, intracellular adhesion molecule (ICAM)-1, and interleukin-10 were measured, and western blot analysis was used to detect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Obstructive sleep apnea; Intermittent hypoxia; Inflammation; Nuclear factor kappa B; Antioxidant.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001201115

Antioxidant status of dog aqueous humor after extracapsular lens extraction
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Barros,P.S.M.; Padovani,C.F.; Silva,V.V.; Queiroz,L.; Barros,S.B.M.
We determined the antioxidant status of the aqueous humor after extracapsular lens extraction in 14 mongrel dogs weighing about 10 kg. The animals were examined by slit lamp biomicroscopy, applanation tonometry and indirect ophthalmoscopy. One eye was submitted to conventional extracapsular lens extraction and the other was used as control. Samples of aqueous humor were obtained by anterior chamber paracentesis before and at days 1, 2, 3, 7 and 15 after surgery. Total antioxidant status was determined as the capacity of aqueous humor to inhibit free radical generation by 2,2-azobis(2-amidopropane) chlorine. Ascorbic acid concentration was measured by HPLC with UV detection. Protein content was determined with the biuret reagent. Statistical analysis was...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Lens; Aqueous humor; Oxidative stress; Antioxidant; Extracapsular lens extraction.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001100007

Mechanisms involved in anti-aging effects of guarana (Paullinia cupana) in Caenorhabditis elegans
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Arantes,L.P.; Machado,M.L.; Zamberlan,D.C.; da Silveira,T.L.; da Silva,T.C.; da Cruz,I.B.M.; Ribeiro,E.E.; Aschner,M.; Soares,F.A.A.
Guarana (Paullinia cupana) is habitually ingested by people in the Amazon region and is a key ingredient in various energy drinks consumed worldwide. Extension in longevity and low prevalence of chronic age-related diseases have been associated to habitual intake of guarana. Anti-aging potential of guarana was also demonstrated in Caenorhabditis elegans; however, the mechanisms involved in its effects are not clear. Herein, we investigated the putative pathways that regulate the effects of guarana ethanolic extract (GEE) on lifespan using C. elegans. The major known longevity pathways were analyzed through mutant worms and RT-qPCR assay (DAF-2, DAF-16, SKN-1, SIR-2.1, HSF-1). The possible involvement of purinergic signaling was also investigated. This...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging; Antioxidant; Guarana; Lifespan; Natural products; Xanthines.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000900602

Laboratory evidence for the hematopoietic potential of Beta vulgaris leaf and stalk extract in a phenylhydrazine model of anemia
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Gheith,I.; El-Mahmoudy,A.
This study was designed to provide laboratory evidence supporting the hematopoietic effect of Beta vulgaris (beet) leaf aqueous extract in phenylhydrazine-induced anemia model in albino rats. Extraction of the leaves/stalks was done by maceration in 30% hydro-ethanol for 48 h. An intraperitoneal injection of 20 mg/kg phenylhydrazine was applied for two consecutive days to develop hemolytic anemia on the 4th day after the 1st injection in 24 of 30 male albino rats. The animals were divided into 5 groups and received the following treatments: standard (ferrous ascorbate + folic acid; 13.5 + 0.135 mg/kg), B. vulgaris extract (100 and 200 mg/kg), or left untreated (normal and diseased controls). Blood samples were taken at 0, 4, 8, and 12 days of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia; Beta vulgaris; Beet; Hematinic; Anti-anemic; Antioxidant.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018001100611

Antioxidant properties of natural compounds used in popular medicine for gastric ulcers
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Repetto,M.G.; Llesuy,S.F.
There is evidence concerning the participation of reactive oxygen species in the etiology and physiopathology of human diseases, such as neurodegenerative disorders, inflammation, viral infections, autoimmune pathologies, and digestive system disorders such as gastrointestinal inflammation and gastric ulcer. The role of these reactive oxygen species in several diseases and the potential antioxidant protective effect of natural compounds on affected tissues are topics of high current interest. To consider a natural compound or a drug as an antioxidant substance it is necessary to investigate its antioxidant properties in vitro and then to evaluate its antioxidant functions in biological systems. In this review article, we shall consider the role of natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Free radicals; Natural antioxidants; Gastric ulcers; Artemisia douglasiana Besser; Dehydroleucodine.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000500003

Attenuation of phosphamidon-induced oxidative stress and immune dysfunction in rats treated with N-acetylcysteine
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Suke,S.G.; Ahmed,R.S.; Pathak,R.; Tripathi,A.K.; Banerjee,B.D.
The effect of N-acetylcysteine, a thiolic antioxidant, on attenuation of phosphamidon-induced oxidative stress and immune dysfunction was evaluated in adult male Wistar rats weighing 200-250 g. Rats were divided into four groups, 8 animals/group, and treated with phosphamidon, N-acetylcysteine or the combination of both for 28 days. Oral administration of phosphamidon (1.74 mg/kg), an organophosphate insecticide, increased serum malondialdehyde (3.83 ± 0.18 vs 2.91 ± 0.24 nmol/mL; P &lt; 0.05) and decreased erythrocyte superoxide dismutase (567.8 ± 24.36 vs 749.16 ± 102.61 U/gHb; P &lt; 0.05), catalase activity (1.86 ± 0.18 vs 2.43 ± 0.08 U/gHb; P &lt; 0.05) and whole blood glutathione levels (1.25 ± 0.21 vs 2.28 ± 0.08 mg/gHb; P &lt; 0.05) showing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytokines; Antioxidant; Organophosphate; Oxidative stress; Immunotoxicity.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000900004

Anethole reduces oxidative stress and improves in vitro survival and activation of primordial follicles
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Sá,N.A.R.; Bruno,J.B.; Guerreiro,D.D.; Cadenas,J.; Alves,B.G.; Cibin,F.W.S.; Leal-Cardoso,J.H.; Gastal,E.L.; Figueiredo,J.R.
Primordial follicles, the main source of oocytes in the ovary, are essential for the maintenance of fertility throughout the reproductive lifespan. To the best of our knowledge, there are no reports describing the effect of anethole on this important ovarian follicle population. The aim of the study was to investigate the effect of different anethole concentrations on the in vitro culture of caprine preantral follicles enclosed in ovarian tissue. Randomized ovarian fragments were fixed immediately (non-cultured treatment) or distributed into five treatments: α-MEM+ (cultured control), α-MEM+ supplemented with ascorbic acid at 50 μg/mL (AA), and anethole at 30 (AN30), 300 (AN300), or 2000 µg/mL (AN2000), for 1 or 7 days. After 7 days of culture, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Anethole; ROS; Primordial follicle; Caprine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000800602

Sida tuberculata (Malvaceae): a study based on development of extractive system and in silico and in vitro properties
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: da Rosa,H.S.; Salgueiro,A.C.F.; Colpo,A.Z.C.; Paula,F.R.; Mendez,A.S.L.; Folmer,V.
Sida tuberculata (Malvaceae) is a medicinal plant traditionally used in Brazil as an antimicrobial and anti-inflammatory agent. Here, we aimed to investigate the different extractive techniques on phytochemical parameters, as well as to evaluate the toxicity and antioxidant capacity of S. tuberculata extracts using in silico and in vitro models. Therefore, in order to determine the dry residue content and the main compound 20-hydroxyecdysone (20E) concentration, extracts from leaves and roots were prepared testing ethanol and water in different proportions. Extracts were then assessed by Artemia salina lethality test, and toxicity prediction of 20E was estimated. Antioxidant activity was performed by DPPH and ABTS radical scavenger assays, ferric reducing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sida tuberculata; 20-hydroxyecdysone; Toxicity prediction; Antioxidant.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000800602

Novel donors of nitric oxide derived of S-nitrosocysteine possessing antioxidant activities
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Petit,C.; Bernardes-Genisson,V.; Hoffmann,P.; Souchard,J.-P.; Labidalle,S.
Novel S-nitrosothiols possessing a phenolic function were investigated as nitric oxide (NO) donors. A study of NO release from these derivatives was carried out by electron spin resonance (ESR). All compounds gave rise to a characteristic three-line ESR signal in the presence of the complex [Fe(II)(MGD)2], revealing the formation of the complex [Fe(II)(MGD)2(NO)]. Furthermore, tests based on cytochrome c reduction were performed in order to study the ability of each phenolic disulfide, the final organic decomposition product of S-nitrosothiols, to trap superoxide radical anion (O2-). This study revealed a high reactivity of 1b and 3b towards O2-. For these two compounds, the respective inhibitory concentration (IC) 50 values were 92 µM and 43 µM.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitric oxide; S-nitrosothiols (thionitrites); Antioxidant; Peroxynitrite.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001100011

Application of various antioxidants in the treatment of influenza
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Dolganova,A.; Sharonov,B.P.
We determined the effect of the antioxidants superoxide dismutase, desferrioxamine and allopurinol on the survival of male CBA mice infected intranasally with 2-5 LD50 lung influenza virus A/Aichi/2/68. Survival for at least 20 days was observed for 45% of the mice that received 1000 U/day superoxide dismutase prepared from red blood cells on days 5, 6, 7 and 8 after infection, and 75% survival was observed for mice that received the same dose on days 4, 5, 6, 7 and 8. Desferrioxamine, 25 mg/kg per day and 100 mg/kg per day injected subcutaneously, resulted in survival rates of 5 and 0%, respectively, compared to 10% survival observed for saline-injected controls. Allopurinol at doses of 5 to 50 mg/kg per day had no effect on mouse survival. These data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Free radicals; Influenza; Antioxidant; Desferrioxamine; Superoxide dismutase; Allopurinol.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001100012

Photochemistry and photobiology of actinic erythema: defensive and reparative cutaneous mechanisms
Provedor de dados: Brazilian Journal of Medical and Biological Research
Sunlight is part of our everyday life and most people accept it as beneficial to our health. With the advance of our knowledge in cutaneous photochemistry, photobiology and photomedicine over the past four decades, the terrestrial solar radiation has become a concern of dermatologists and is considered to be a major damaging environmental factor for our skin. Most photobiological effects (e.g., sunburn, suntanning, local and systemic immunosuppression, photoaging or dermatoheliosis, skin cancer and precancer, etc.) are attributed to ultraviolet radiation (UVR) and more particularly to UVB radiation (290-320 nm). UVA radiation (320-400 nm) also plays an important role in the induction of erythema by the photosensitized generation of reactive oxygen species...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Sunburn; Antioxidant; DNA photodamage; Reactive oxygen species; UV radiation.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000500002

Brazilian propolis protects Saccharomyces cerevisiae cells against oxidative stress
Provedor de dados: Brazilian Journal of Microbiology
Autores: Sá,Rafael A. de; Castro,Frederico A.V. de; Eleutherio,Elis C.A.; Souza,Raquel M. de; Silva,Joaquim F.M. da; Pereira,Marcos D.
Propolis is a natural product widely used for humans. Due to its complex composition, a number of applications (antimicrobial, antiinflammatory, anesthetic, cytostatic and antioxidant) have been attributed to this substance. Using Saccharomyces cerevisiae as a eukaryotic model we investigated the mechanisms underlying the antioxidant effect of propolis from Guarapari against oxidative stress. Submitting a wild type (BY4741) and antioxidant deficient strains (ctt1∆, sod1∆, gsh1∆, gtt1∆ and gtt2∆) either to 15 mM menadione or to 2 mM hydrogen peroxide during 60 min, we observed that all strains, except the mutant sod1∆, acquired tolerance when previously treated with 25 µg/mL of alcoholic propolis extract. Such a treatment reduced the levels of ROS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propolis; Antioxidant; Oxidative stress; Saccharomyces cerevisiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300051

Epiphytic marine pigmented bacteria: A prospective source of natural antioxidants
Provedor de dados: Brazilian Journal of Microbiology
Autores: Pawar,Ravindra; Mohandass,Chellandi; Sivaperumal,Elakkiya; Sabu,Elaine; Rajasabapathy,Raju; Jagtap,Tanaji.
Awareness on antioxidants and its significance in human healthcare has increased many folds in recent time. Increased demand requisite on welcoming newer and alternative resources for natural antioxidants. Seaweed associated pigmented bacteria screened for its antioxidant potentials reveals 55.5% of the organisms were able to synthesize antioxidant compounds. DPPH assay showed 20% of the organisms to reach a antioxidant zone of 1 cm and 8.3% of the strains more than 3 cm. Pseudomonas koreensis (JX915782) a Sargassum associated yellowish brown pigmented bacteria have better activity than known commercial antioxidant butylated hydroxytoluene (BHT) against DPPH scavenging. Serratia rubidaea (JX915783), an associate of Ulva sp. and Pseudomonas argentinensis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Epiphytic; Pigmented bacteria; Seaweeds.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100029

Composition, antioxidant properties, and biological activities of the essential oil extracted from Ocotea diospyrifolia (Meisn.) Mez.
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Fabri,Natasha Tiemi; Gatto,Larissa Junqueira; Furusho,Alethéia Santos; Garcia,Meira Janette Ballestros; Marques,Francisco de Assis; Miguel,Marilis Dallarmi; Montrucchio,Deise Prehs; Zanin,Sandra Maria Warumby; Miguel,Obdulio Gomes; Dias,Josiane de Fátima Gaspari.
The article has aimed to characterize the essential oil extracted from Ocotea diospyrifolia (Meisn.) Mez. leaves, in terms of its chemical composition and antioxidant, hemolytic, and phytotoxic potentials, as well as its toxicity against Artemia salina. The major constituents identified by CG-MS were d-elemene, spathulenol, and b-atlantol. When screened for potential biological activities, the essential oil presented low toxicity against Artemia salina, and a capacity of lysing red blood cells. Also, the evaluation of its in vitro antioxidant activity, using the phosphomolybdenum method, showed better results when compared to butylhydroxytoluene (BHT) and rutin. In conclusion, the results obtained showed certain in vitro toxicity, leading to an interesting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocotea diospyrifolia; Lauraceae; Spathulenol; Antioxidant; Toxicity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100593

Protective effects of Urtica dioica L. seed extract on liver tissue injury and antioxidant capacity in irradiated rats
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Yıldızhan,Kenan; Demirtaş,Ömer Can; Uyar,Ahmet; Huyut,Zübeyir; Çakir,Tahir; Keleş,Ömer Faruk; Yener,Zabit.
Radiotherapy is often used for the treatment of cancer. However, it causes some side effects in patients. This study aimed to determine the hepatoprotective effects of Urtica dioica L. seed-extract (UDSE) in radiation-induced liver injury. Thirty-two male rats were randomly divided into 4 groups (n=8): control(C) group: no action was taken; radiation (R) group: irradiation was administrated at 5Gy single-fraction, radiation with UDSE(R+UDSE) group: irradiation was administrated at 5 Gy single-fraction and animals were fed pellets with 30 mL UDSE/kg; UDSE group: animals were fed pellets with 30 mL UDSE/kg. All of the experiments were performed in all of the groups over 10 days. Malondialdehyde (MDA) and reduced-glutathione (GSH) levels and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Radiation; Urtica dioica L; Seed extract; Oxidative stress; Antioxidant; Tissue injury.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100536

In vitro evaluation of Mucuna pruriens (L.) DC. antioxidant activity
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Longhi,Joy Ganem; Perez,Elisa; Lima,Jair José de; Cândido,Lys Mary Bileski.
Mucuna pruriens (L). Dc is a plant of the Fabaceae family, commonly known as velvet bean, itchy bean, chiporro bean, mucuna, among others. This plant has several medicinal properties, including its potential to treat Parkinson's disease (PD). International studies have shown that this plant surpasses the benefits of the substance levodopa in the treatment of PD. Taking into account that nerve cells are highly sensitive to oxidative substances, this study evaluated the antioxidant activity of mucuna and compared it to that of levodopa. The plant seeds' phenolic concentration was quantified by using the Folin-Denis reagent and the antioxidant activity assays were performed by using three different methods: the reduction of the phosphomolybdenium complex, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mucuna pruriens; Antioxidant; Phenolic compounds.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000300011

Bovine serum albumin-based nanoparticles containing the flavonoid rutin produced by nano spray drying
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Pedrozo,Regiellen Cristina; Antônio,Emilli; Khalil,Najeh Maissar; Mainardes,Rubiana Mara.
Rutin is a flavonoid compound obtained from different vegetables and fruits; specifically, it is found in the seeds of buckwheat and in fruit peels, particularly citrus. It is also an important constituent of red wine. Rutin exhibits various biological properties including antiviral, vasoprotective, anti-inflammatory, and anticarcinogenic activities. However, its antioxidant activity is the most well studied. Despite the potential for in vitro applications, rutin presents low oral bioavailability that affects its biological activities. Nanoparticles composed of polymers, protein, or lipids are of great importance in the pharmaceutical and nutraceutical areas due to their physicochemical properties, which improve the pharmacokinetics of the drug which is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nano spray drying; Rutin; Nanoparticles; Bovine serum albumin; Antioxidant.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100512

Chemical composition, phytotoxic potential, biological activities and antioxidant properties of Myrcia hatschbachii D. Legrand essential oil
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Gatto,Larissa Junqueira; Fabri,Natasha Tiemi; Souza,Angela Maria de; Fonseca,Natasha Stopinski Triaquim da; Furusho,Alethéia dos Santos; Miguel,Obdulio Gomes; Dias,Josiane de Fatima Gaspari; Zanin,Sandra Maria Warumby; Miguel,Marilis Dallarmi.
Myrcia hatschbachii D. Legrand (Myrtaceae) is a native and endemic species from Brazil. This study investigated the essential oil composition, phytotoxic potential, in vitro toxicity, antioxidant properties and antibacterial activity of species. Chromatographic analysis of essential oil identified trans-calamanene, (E)-caryophyllene and spathulenol as major components. Antioxidant capacity was determined by the DPPH• scavenging method and phosphomolybdenum complex formation assay. Antibacterial activity was evaluated using the Minimal Inhibitory Concentration test, demonstrating that the essential oil was active toward Enterococcus faecalis and Staphylococcus aureus. Phytotoxic activity of essential oil was analyzed by testing interference on germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Phytotoxic; Antioxidant; Antibacterial; Hemolysis; Artemia salina.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100560

Evaluation of antiarthritic activity of ginkgolic acid against Freund’s adjuvant induced arthritic rat model
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Zhang,Ziqiang; Wang,Xiaogang; Li,Pengshan; Bai,Minghua; Qi,Wenbing.
This study aimed to analyze the antiarthritic activity of ginkgolic acid against the Complete Freund’s Adjuvant (CFA)-induced arthritis in rats. Arthritis was induced through an intradermal injection of CFA (0.1 mL) at the right hind footpad of adult Wistar Albino rats. Ginkgolic acid was administered orally at doses of 25 mg/kg and 50 mg/kg, respectively, once daily via gavage for 25 days upon inducing arthritis. Indomethacin was administered orally at a dose of 3 mg/kg twice in a week which served as positive control group. The animals were sacrificed and subjected to biochemical and histopathological analysis upon completion of treatment. Ginkgolic acid was able to reverse the arthritic effect (p &lt; 0.01) induced by CFA in a dose dependent manner....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ginkgolic acid; Complete Freund’s Adjuvant (CFA); Osteoarthritis; Antioxidant; Anti-inflammatory; Histopathology.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100617

Radioprotective profile of Urtica dioica L. seed extract on oxidative DNA-damage in liver tissue and whole blood of radiation-administered rats
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Çakır,Tahir; Yıldızhan,Kenan; Huyut,Zübeyir; Uyar,Ahmet; Arıhan,Okan.
It was aimed to investigate the radioprotective activity of Urtica dioica L. seed extract (UDSE) in the whole blood and liver of radiation-administered rats, both biochemically and immunohistochemically. 32 rats were divided into 4 groups (n:8). Control group (C): no administration for 10 days. Radiation group (IR): fed pellets for 10 days after exposure to radiation. Radiation + UDSE (IR+UDSE) group: exposed to radiation and fed UDSE for 10 days. UDSE group (UDSE): fed UDSE for 10 days. Radiation (5Gy) was given as a single fraction. 8-hydroxy-2-deoxyguanosine (8-OHdG) and deoxyguanosine (dG) levels were analyzed by biochemical method and glutathione peroxidase 1 (GPx-1) analyses were performed by immunohistochemical method in the liver and blood tissues...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Radioprotective; DNA damage; Antioxidant; Urtica.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100558

Renal protective effects of vicenin-2 and scolymoside in a mouse model of sepsis
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Lee,Bong-Seon; Yang,Sumin; Lee,Changhun; Ku,Sae-Kwang; Bae,Jong-Sup.
This study was initiated to determine whether 2 structurally related flavonoids found in Cyclopia subternata-vicenin-2 (VCN) and scolymoside (SCL)-could modulate renal functional damage in a mouse model of sepsis, and to elucidate the relevant underlying mechanisms. The potential of VCN and SCL treatment to reduce renal damage induced by cecal ligation and puncture (CLP) surgery in mice was measured via assessment of serum creatinine, blood urea nitrogen (BUN), lipid peroxidation, total glutathione, glutathione peroxidase activity, catalase activity, and superoxide dismutase activity. Treatment with either VCN or SCL resulted in elevated plasma levels of BUN and creatinine, and of protein in the urine of mice with CLP-induced renal damage. Moreover, both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vicenin-2; Scolymoside; Sepsis; Antioxidant; Renal injury; Renal toxicity.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100578

Towards the cosmetic application of Passiflora coccinea (Aubl.): antioxidant activity and photo protective capacity of the methanolic and glycolic leaf extracts
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Silva,Gisláine Correa da; Salvador,Marcos José; Bottoli,Carla Beatriz Grespan.
The present study aimed at the evaluation of Passiflora coccinea (Aubl.) antioxidant and photo protective in vitro activities, looking forward to their application as antiaging or sunscreen agents in cosmetic formulations. Methanolic and glycolic leaf extracts were prepared by three methods: ultrasound assisted extraction (UAE, 30 min.), maceration at room temperature (72 h) and maceration at 30 ºC (72 h). The antioxidant activities of the extracts were measured by DPPH and ORAC-FL assays and they were incorporated into a cosmetic emulsion to have their sun protection factor (SPF) measured spectrophotometricaly. The antioxidant activity of the emulsions were measured by DPPH and ORAC as well. C-glycosyl-flavones were identified in the extracts by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passiflora coccinea; Emulsion; Antioxidant; SPF; Isovitexin; HPLC-DAD.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100511

Ethnopharmacological activity of Hedera nepalensis K. Koch extracts and lupeol against alloxan-induced type I diabetes
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Hashmi,Waleed Javed; Ismail,Hammad; Jafri,Laila; Mirza,Bushra.
In this study, we investigated the protective effects of Hedera nepalensis crude extract, its fractions and lupeol in alloxan-induced diabetic rats. Lupeol and n-hexane (HNN) fraction significantly reduced the blood glucose level by increasing insulin level in time dependent manner, and also significantly increased amylase and lipase activity in diabetic rats. Elevated levels of alanine transaminases (ALT), aspartate transaminases (AST), thiobarbituric acid reactive substances (TBARS), nitrite, hydrogen peroxide (H2O2), total bilirubin and total protein in blood serum were efficiently restored to normal levels. Suppressed enzymatic activity of catalase (CAT), superoxide dismutase (SOD), reduced glutathione (GSH) and peroxidase (POD) were also restored to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Amylase; Diabetes mellitus; Insulin; Hedera nepalensis; Lupeol.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100597

Coenzyme Q10 and its effects in the treatment of neurodegenerative diseases
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Santos,Graciela Cristina dos; Antunes,Lusânia Maria Greggi; Santos,Antonio Cardozo dos; Bianchi,Maria de Lourdes Pires.
According to clinical and pre-clinical studies, oxidative stress and its consequences may be the cause or, at least, a contributing factor, to a large number of neurodegenerative diseases. These diseases include common and debilitating disorders, characterized by progressive and irreversible loss of neurons in specific regions of the brain. The most common neurodegenerative diseases are Parkinson's disease, Huntington's disease, Alzheimer's disease and amyotrophic lateral sclerosis. Coenzyme Q10 (CoQ10) has been extensively studied since its discovery in 1957. It is a component of the electron transportation chain and participates in aerobic cellular respiration, generating energy in the form of adenosine triphosphate (ATP). The property of CoQ10 to act as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coenzyme Q10; Antioxidant; Oxidative stress; Neurodegenerative diseases.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000400002

Bioisosteric modification on melatonin: synthesis of new naphthalene derivatives, in vitro antioxidant activity and cytotoxicity studies
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Shirinzadeh,Hanif; Ghalia,Mohammed; Tascioglu,Alev; Adjali,Ferial Intissar; Gunesacar,Gulsen; Gurer-Orhan,Hande; Suzen,Sibel.
Melatonin (MLT) is a strong free radical scavenger that protects the body from the deleterious effects of excess oxidants. Synthesis of MLT analogue compounds with antioxidant potency has recently attracted the interest of researchers. In general, the strategy consists of modifying the groups in the different sites of the indole ring or replacing the indole ring with an analogue. As part of our ongoing research, the antioxidant capacity and cytotoxicity of newly synthesized MLT analogue naphthalene derivatives were evaluated. The radical scavenging activity was tested by a 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. Most of the synthesized compounds showed significant antioxidant activity in comparison to MLT. The structure-activity relationship was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Cytotoxic; Melatonin; MTT; DPPH.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100550

Acetylcholinesterase inhibition, antioxidant and identification of some chemical constituents of Phyllanthus atropurpureus cultivated in Egypt
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Abdallah,Walid Elsayed; Elsayed,Wael Mohamady; Hassan,Rasmia Ali; Nazif,Naglaa Mohammed; Ali,Mohammed Ibrahim; Abdelshafeek,Khaled Abdelhady.
Investigation of the lipid constituents of the aerial parts of Phyllanthus atropurpureus resulted in isolation and identification of the fatty acid mixture which consists of eight acids with linolenic acid as major and the unsaponifiable fraction that contain a series of hydrocabons, sterols, in addition to one triterpene (α-amyrin). The acetone insoluble fraction was found to contain two fatty alcohols and three n-hydrocabons in which the n-eicosane is the most abundant (44.16%). The flavonoidal constituents were isolated from ethyl acetate and butanol fractions which were identified as: luteolin-7-O-glucoside, kaempferol 3-O-(p-coumaroylglucoside), kaempferitrin, luteolin and kaempferol. Evaluation of different extracts as acetylcholinesterase inhibitors...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phyllanthus atropurpureus; Euphorbiaceae; Flavonoids; Acetylcholineesterase inhibitors; Antioxidant.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100575

New flavonoid with antidiabetic and antioxidant potential from Tetrastigma angustifolia (Roxb.) Deb leaves
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Junejo,Julfikar Ali; Zaman,Kamaruz; Ali,Mohammed; Rudrapal,Mithun.
Ethnomedicinal survey documents the traditional practices of Tetrastigma angustifolia leaves in the management of diabetes in the North-eastern region of India. The present study was aimed at isolation of possible antidiabetic principle(s) from T. angustifolia leaves and evaluation of antidiabetic efficacy of isolated compound(s) in experimental animal model. The methanolic extract of T. angustifolia leaves was obtained by Soxhlet extraction method and subjected to silica gel column chromatography (100-200 mesh). Fraction 18-176 chloroform:methanol (70:30) yielded a pale yellow colored compound. The structure of pure compound was elucidated with the help of UV, IR, NMR and Mass spectrometric/techniques. The antioxidant activity of the isolated compound was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: T. angustifolia; Leaves; Flavonoid; Antidiabetic; Antioxidant; Lead molecule.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100633

Ascorbic acid biosynthesis: a precursor study on plants
Provedor de dados: Brazilian Journal of Plant Physiology
Autores: Barata-Soares,Anderson D.; Gomez,Maria Luiza P. A.; Mesquita,Carlos Henrique de; Lajolo,Franco M.
Since the first isolation of ascorbic acid (AsA) in 1928, few papers have been published regarding the biosynthesis of AsA in plants, especially in fruits. It took as long as 1998, before Wheeler, Jones and Smirnoff, based on a study with Arabidopsis leaves, proposed what can be considered the main pathway of biosynthesis of AsA, in which L-galactose (L-GAL) is a key precursor. This paper reports the effectiveness of some precursors (cold or radiolabeled) in the biosynthesis of AsA in different plants: green sweet pepper, white-pulp guava, red-pulp guava, papaya and strawberry at two ripening stages (mature green and ripe for papaya and mature green and half red for strawberry) and broccoli. The 'Smirnoff-Wheeler' pathway was functioning and active in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbate; Ascorbate biosynthesis pathway; Antioxidant; Precursor infiltration.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000300004

Cadmium-Zinc interactions in a hydroponic system using Ceratophyllum demersum L.: adaptive ecophysiology, biochemistry and molecular toxicology
Provedor de dados: Brazilian Journal of Plant Physiology
Autores: Aravind,Parameswaran; Prasad,Majeti Narasimba Vara.
The interaction between an essential micronutrient, Zn and a toxic non-essential element, Cd has been comprehensively reviewed based on our experiments conducted with Ceratophyllum demersum L. in a hydroponic system. Since Cd and Zn belong to the group IIB transition elements and show similarities in chemistry, geochemistry and environmental properties, it would be one of the elemental pairs of choice to investigate metal-metal interactions. Evidence in support of the protective role of Zn against Cd toxicity in Ceratophyllum demersum L. is presented in this review. Based on our experimental results, we conclude that the antioxidant properties of Zn play an important role in counteracting Cd toxicity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonistic; Antioxidant; Enzyme conformation; Metal interactions; Redox pool.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000100002

Composition and Bioactive Properties of Yerba Mate (llex paraguariensis A. St.-Hil.): A Review
Provedor de dados: Chilean Journal of Agricultural Research
Autores: Burris,Kellie P; Harte,Federico M; Michael Davidson,P; Neal Stewart Jr,C; Zivanovic,Svetlana.
Yerba Mate is a popular tea beverage produced and consumed in the South American countries of Argentina, Brazil, Chile, Paraguay, and Uruguay, and is processed from the leaves and stems of Ilex paraguariensis A. St.-Hil., a perennial shrub from the Aquifoliaceae family. Production occurs in six stages: harvesting older leaves and small stems, roasting by direct fire, drying under hot air, milling to specified size, aging to acquire optimal sensory attributes, and final packaging. While grown and consumed for centuries in South America, its popularity is increasing in the United States because of demand by consumers for healthier, more natural foods, its filling a niche for a different type of tea beverage, and for Yerba Mate's potential health benefits -...
Tipo: Journal article
Palavras-chave: Antioxidant; Antimicrobials; Natural products; Yerba mate; Tea.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200016

The effect of foliar boron spraying on the fruit features of Brigitta and Legacy highbush blueberry (Vaccinium corymbosum) cultivars
Provedor de dados: Ciencia e Investigación Agraria, Revista Latinoamericana en Ciencias de la Agricultura
Autores: Meriño-Gergichevich,Cristian; Pacheco,Eduardo; Reyes-Díaz,Marjorie.
C. Meriño-Gergichevich, E. Pacheco, and M. Reyes-Díaz. 2016. The effect of foliar boron spraying on the fruit features of Brigitta and Legacy highbush blueberry (Vaccinium corymbosum) cultivars. Cien. Inv. Agr. 43(3):452-463. Boron (B) is associated with reproductive and antioxidant metabolism in plants, and in southern Chile, the deficiency of this micronutrient is ameliorated through foliar applications that are a part of agricultural management, thus ensuring the productivity of crops including highbush blueberry (Vaccinium corymbosum L.). However, the appropriate B dosage for this species is unknown, so the aim of this study was to evaluate foliar B application on fruit quality in highbush blueberry in southern Chile. During the 2014-2015 season,...
Tipo: Journal article
Palavras-chave: Antioxidant; DPPH; Fruit quality; Micronutrient; ORAC.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300011

Effect of methyl jasmonate treatments on the bioactive compounds and physicochemical quality of 'Fuji' apples
Provedor de dados: Ciencia e Investigación Agraria, Revista Latinoamericana en Ciencias de la Agricultura
Autores: Öztürk,Burhan; Altuntas,Ebubekir; Yildiz,Kenan; Ozkan,Yakup; Saracoglu,Onur.
Recently, plant growth regulators have been used for various purposes in apples. Methyl jasmonate (MeJA) has significant effects on the physiology, postharvest biology, processing, and chemical composition of apples. In the present study, the effects of MeJAMeJa treatments on the physicochemical quality and bioactive compounds (total antioxidant activity, total phenolics, and total anthocyanins) of 'Fuji' apples were investigated. The following doses of MeJa were used: 0 (control); 1; 120; 2,240; and 4,480 mg L-1. The highest geometric mean diameter, fruit mass, flesh firmness and skin thickness were obtained from the 2,240 mg L-1 MeJA treatment. Fruits harvested from control trees exhibited the highest total soluble solids content (TSSC) and pH, whereas...
Tipo: Journal article
Palavras-chave: Apple; Antioxidant; Color; Firmness; Methyl jasmonate; Phenolics.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100018

Nutritional and functional characterization of wild and cultivated Sarcocornia neei grown in Chile
Provedor de dados: Ciencia e Investigación Agraria, Revista Latinoamericana en Ciencias de la Agricultura
Autores: Riquelme,Javiera; Olaeta,José Antonio; Gálvez,Lena; Undurraga,Pedro; Fuentealba,Claudia; Osses,Andrea; Orellana,Jaime; Gallardo,José; Pedreschi,Romina.
Sarcocornia neei is a halophyte that grows on the coast of the Valparaiso Region of Chile. Studies related to its nutritional and functional value under wild and cultivated conditions are not available. Thus, in this study, a nutritional (complete proximal, mineral and dietary fiber analysis) and functional characterization (total phenolics, &amp;#946;-carotene, hydrophilic and lipophilic antioxidant activity (HAA and LAA) and ascorbic acid) were performed for wild and cultivated plants. Wild plants displayed higher amounts of compounds involved in stress defense mechanisms such as total phenolics, proteins, dietary fiber and ash. The mineral analysis revealed that Na+ and Cl- are the main ions accumulated in wild and cultivated Sarcocornia neei that are...
Tipo: Journal article
Palavras-chave: Antioxidant; Dietary fiber; Proximal analysis; Seawater; Sustainability.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200011

Oral single dose of allopurinol in thoroughbred foals born from mares with placentitis
Provedor de dados: Ciência Rural
Autores: Araujo,Luciana Oliveira de; Nogueira,Carlos Eduardo Wayne; Pazinato,Fernanda Maria; Frey Junior,Friedrich; Paixão,Silvano Costa; Souza,Letícia da Silva; Curcio,Bruna da Rosa.
ABSTRACT: The aim of this study was to evaluate the effects of Allopurinol in foals born from mares with placentitis. Twenty foals were assigned into two groups: Healthy foals (n=10), born from healthy mares and Placentitis foals (n=10), born from mares with placentitis. Five foals from each group were randomly assigned to a treatment or control group. Treatment groups received Allopurinol (40mg kg-1 orally six hours after birth). Blood samples were collected for estimation of hematological variables and serum concentration of calcium, chloride, creatinine, phosphorus, glucose, lactate and magnesium. Placentitis foals presented leukopenia and neutropenia when compared with Healthy foals, at birth. The white blood cell (WBC) count was lower in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neonatology; Antioxidant; Therapeutic; Biochemical; Hematology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601119

Quality and stability of eggs from laying hens fed with organic minerals and lycopene
Provedor de dados: Ciência Rural
Autores: Cruz,Flavia Kleszcz da; Garcia,Elis Regina de Moraes; Ferraz,André Luiz Julien; Souza,Karina Márcia Ribeiro de; Feliciano,William Britez; Rohod,Rosileide Vilalba.
ABSTRACT: This study aimed to evaluate the effect of using lycopene and organic minerals in diets for laying hens on the egg quality and stability of eggs stored for 30 days under different storage environments. An entirely randomized design was adopted in 2x3x3 factorial scheme (mineral sources x lycopene levels x storage periods) with six replicates of eight hens per experimental unit. The experimental diets were: feed containing inorganic minerals (IM) without added lycopene; IM with added lycopene (400mg kg-1); IM with added lycopene (800mg kg-1); organic minerals (OM) without added lycopene; OM with added lycopene (400mg kg-1); OM with added lycopene (800mg kg-1). After 112 days of feeding experimental diets, it was selected 60 eggs treatment-1, which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Carotenoid; Chelate; Selenium; TBARS.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100157

Exogenous ATP administration prevents ischemia/reperfusion-induced oxidative stress and tissue injury by modulation of hypoxanthine metabolic pathway in rat ovary
Provedor de dados: Ciência Rural
Autores: Kumbasar,Serkan; Cetin,Nihal; Yapca,Omer Erkan; Sener,Ebru; Isaoglu,Unal; Yilmaz,ehmet; Salman,Suleyman; Aksoy,Ayse Nur; Gul,Mehmet Ali; Suleyman,Halis.
In this study, xanthine oxidase (XO), malondialdehyde (MDA), myeloperoxidase (MPO) and glutathione (GSH) levels in the ovarian tissues of rats during the development of ischemia and postischemia-induced reperfusion were investigated, and the effect of ATP on ischemia-reperfusion (I/R) damage was biochemically and histopathologically examined. The results of the biochemical analyses demonstrated that ATP significantly reduced the level of XO and MDA and increased the amount of GSH in both ischemia and I/R-applied ovarian tissue at the doses administered. Furthermore, ATP significantly suppressed the increase in MPO activity that occurred following the application of post ischemia reperfusion in the ovarian tissue. The biochemical results obtained in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Xanthine oxidase metabolism; Ischemia/reperfusion injury; Antioxidant; Rat.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000701257

Extraction, characterization and microencapsulation of isoflavones from soybean molasses
Provedor de dados: Ciência Rural
Autores: Batista,Vanessa Sabrina Fagundes; Nunes,Graciele Lorenzoni; Viegas,Gabriela Ilha; Lucas,Bruna Nichelle; Bochi,Vivian Caetano; Emanuelli,Tatiana; Barin,Juliano Smanioto; Menezes,Cristiano Ragagnin de; Rosa,Claudia Severo da.
ABSTRACT: This study aimed to extract isoflavones from soybean molasses with different solvents, furthermore, the selected extract, which showed overall desirable characteristics was selected to evaluate the potentials of different encapsulating agents. The encapsulating agents employed for the study included 18% Maltodextrin DE20 (T1), 18% Hi-maize (T2), and a mixture of equal proportions of 9% Maltodextrin DE20 and 9% of Hi-maize (T3). Solvents such as 80% ethanol and methanol, and grain alcohol in varying different concentrations of 50 and 80% were used for the studies. The best solvent for the extraction of phenolics and total isoflavones was 50% cereal alcohol, this extract also presented higher antioxidant activity. Evaluation of the encapsulating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray-drying; Antioxidant; Phenolics; Isoflavones.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300751

Passion fruit and apple: from residues to antioxidant, antimicrobial and anti-Alzheimer’s potential
Provedor de dados: Ciência Rural
Autores: Lima,Denise Simim; Duarte,Nathália Barroso Almeida; Barreto,Débora Luiza Costa; Oliveira,Geane Pereira de; Takahashi,Jacqueline Aparecida; Fabrini,Sabrina Pinheiro; Sande,Denise.
ABSTRACT: The waste in the fruit production chain, including the juice and pulp industries, produces large quantities of leftover husks, seeds and bagasse. This volume of waste generates huge environmental and economic impact. The objective of this research was to determine the potential of using residues from passion fruit (Passiflora edulis) and apple (Malus domestica) varieties in the production of functional flours. Passion fruit flour showed greater reduction of DPPH (EC50%: 50.4μg/mL) radicals, showing antioxidant potential, as well as a more efficient inhibition of Staphylococcus aureus (71.3±1.2μg/mL), with a modest; however efficient, inhibition of acetylcholinesterase (10%). All Apple flours were good antioxidants and the fuji apple flour stood...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetylcholinesterase; Agroindustrial residues; Antioxidant; Natural preservative.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900754

Antioxidant and anti-inflammatory activities of winery wastes seeds of Vitis labrusca
Provedor de dados: Ciência Rural
Autores: Scola,Gustavo; Kappel,Virginia Demarchi; Moreira,José Claudio Fonseca; Dal-Pizzol,Felipe; Salvador,Mirian.
There are many studies about the biological activities of Vitis vinifera grape seeds, which are rich in phenolic compounds, known by their several health beneficial effects. However, until now there is no data about biological activities of the seeds of V. labrusca, specie found in South and North America. Every year, the global wine production (around 260 million hL) generates about 19.5 million ton of wastes, which are usually discarded in the environment. The aim of this research was to evaluate the antioxidant and anti-inflammatory activities of aqueous extracts of seeds from wine wastes of Vitis labrusca (cv. 'Bordo' and 'Isabella'). Both extracts showed significant antioxidant and anti-inflammatory activities, which are positively correlated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: V. labrusca; Winery wastes; Antioxidant; Anti-inflammatory.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000700020

Control of the lipid oxidation in Nile tilapia feed
Provedor de dados: Ciência Rural
Autores: Grassi,Thiago Luís Magnani; Marcos,Marcelo Tacconi de Siqueira; Ponsano,Elisa Helena Giglio.
ABSTRACT: The purpose of this research was to investigate the progress of the rancidity in Nile tilapia diets containing bacterial biomass of Rubrivivax gelatinosus . Six experimental treatments comprised basal diet (negative control), diet with asthaxanthin (positive control) and 4 diets with different concentrations of the bacterial biomass. The thiobarbituric acid assay for rancidity analyses were accomplished after 6 and 12 months of diets storage. It was concluded that  Rubrivivax gelatinosus biomass minimized the racidity in Nile tilapia diets in 32.52 to 44.72% at 6 months and in 37.85 to 52.37% at 12 months of storage.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Antioxidant; Rancidity; Rubrivivax gelatinosus; TBARS.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901675

Study of preparations of bee pollen extracts, antioxidant and antibacterial activity
Provedor de dados: Ciência e Agrotecnologia
Autores: Carpes,Solange Teresinha; Begnini,Rosicler; Alencar,Severino Matias de; Masson,Maria Lúcia.
The aim of this study was to determine the antioxidant activity, phenolic content and antibacterial activity of pollen extracts obtained with different concentrations of ethanol. Each extraction condition (ethanol solutions from 40 to 90%) had a different effect in the phenolic compounds content. Although, the pollen extract obtained at 60, 70 and 80% of ethanol showed relatively higher levels of phenolic compounds (&gt;10 mg/g) and did not present statistical significant difference between the extraction conditions. The amount of total phenolics ranged from 3.6 to 8.1 and 6.6 to 10.9 mg GAE/g for Alagoas state and Parana state pollen, respectively. The higher value for antioxidant activity index was 83.30% for the pollen from Alagoas state and 81.15 % for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollen; Antioxidant; Antibacterial activity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000600032

Cassava starch edible coating incorporated with propolis on bioactive compounds in strawberries
Provedor de dados: Ciência e Agrotecnologia
Autores: Thomas,Ariela Betsy; Nassur,Rita de Cássia Mirela Resende; Boas,Ana Carolina Vilas; Lima,Luiz Carlos de Oliveira.
ABSTRACT Strawberry is a fruit appreciated throughout the world due to its attractive quality attributes and stands out due to its high phenolic compound content, which positively contribute to biological properties of nutritional interest. The objective of this study was to evaluate the effect of cassava starch coatings incorporated with propolis combinations on the phytochemical content and the maintenance and increase of the strawberry antioxidant activity. The treatments were 3% cassava starch (CS), 3% cassava starch + 33% ethanolic propolis extract (CS + P33%), 3% cassava starch + 66% ethanolic propolis extract (CS + P66%) and control (C). The fruits were stored at 4 °C ± 0.5 ºC and 90%RH for 16 days, making up a completely randomized design with 4...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytochemicals; Antioxidant; Fragaria ananassa.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000100087

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos
Provedor de dados: Ciência e Agrotecnologia
Autores: Figueiredo,Júnia Rafael Mendonça; Paiva,Patrícia Duarte de Oliveira; Silva,Diogo Pedrosa Corrêa da; Paiva,Renato; Souza,Rafaela Ribeiro; Reis,Michele Valquíria dos.
ABSTRACT Tropical species may require higher temperatures as well as higher growth regulator concentrations for in vitro development. Since these conditions may affect plant metabolism, the objective of this study was to identify how different temperatures and gibberellin concentrations may affect the in vitro development of strelitzia embryos, analyzing the effect on ROS and cytogenetic stability. Zygotic embryos were cultivated on MS medium supplemented with 5, 10 and 20 µM GA3 under temperatures of 25 °C, 30/25 °C and 30 °C. After 60 days, higher embryonic germination rate (72%) and shoot length of plantlets (3.14 cm) were observed on medium containing 20 µM gibberellic acid (GA3). At this concentration, there was an increase in nitrate reductase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Embryo culture; Gibberellin; Nitrate reductase.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542021000100204

Extraction of &amp;#947-oryzanol from rice bran
Provedor de dados: Ciência e Agrotecnologia
Autores: Heidtmann-Bemvenuti,Renata; Nora,Náthali Saião; Badiale-Furlong,Eliana.
γ-oryzanol, a phytochemical, has antioxidant activities and potential health benefits. In this study, we aimed to develop a method for extracting high amounts of γ-oryzanol from rice bran and for verifying its stability in different solvents. Of the 5 methods under investigation, the one that yielded the highest γ-oryzanol content was further improved by using a central composite rotational design (DCCR - 2(4), including 8 tests in axial conditions and 4 central points, totaling 28 trials). The parameters under study were temperature, time, volume, and the ratio of hexane:isopropanol. High γ-oryzanol content (13.98 mg.g-1) was obtained by using the following extraction conditions: 40° C, 40 min, and 75 mL hexane:isopropanol (1:3). The limits of detection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Spectrophotometer; Stability; Phytochemistry.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000600008