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| Registros recuperados: 171 | |
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| Valdés, O.; Hernádez, Y.; Fernández, M.D.; Hernández, I.; Rodriguez, M.; Cano, M.; Laguna, A.; Díaz, C.; Cabrera, B.. |
| En el presente trabajo se estudia la capacidad antioxidante de varios extractos, acuosos e hidro-alcohólicos obtenidos a partir de algas y plantas marinas de la plataforma insular cubana. A todos los extractos se les determinó su contenido de polifenoles, proteínas, lípidos y azúcares totales, así como la actividad Superóxido Dismutasa (SOD). Todos los extractos evaluados mostraron una buena actividad antioxidante, con una CE50 inferior de 0,4 mg.ml-1. El contenido de polifenoles en los extractos de Ulva fasciata es menor el de las otras especies, aunque tanto el extracto hidro-alcohólico como el del alga seca e irradiada de dicha especie presentan una buena actividad antioxidante. El extracto hidro-alcohólico de Thalassia testudinum presenta el mayor... |
| Tipo: Journal Contribution |
Palavras-chave: Proteins; Antioxidants; Proteins; Antioxidants; Http://aims.fao.org/aos/agrovoc/c_6259; Http://aims.fao.org/aos/agrovoc/c_511. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/2820 |
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| ROZA, L. da F.; SILVA, A. S. da; MIGLIORINI, M. J.; BOTTARI, N. B.; GLOMBOWSKY, P.; BARETTA, M.; TAVERNARI, F. de C.; STEFANI, L. M.; BOIAGO, M. M.. |
| Abstract: Diphenyl diselenide (Ph2Se2) is an organic selenium compound that is known for its antioxidant characteristics. Thus, the aim of this study was to evaluate whether Ph2Se2 in quail (Coturnix japonica) diets influences the oxidative/antioxidant status and meat quality. Materials and methods. Four diets (0; 0.3; 0.6; 0.9 ppm Ph2Se2) were provided to 56 male quails (Coturnix japonica) distributed in a completely randomized design with 14 repetitions in order to check whether (PhSe)2 would change their blood and tissue oxidative/antioxidant status, which would lead to an improvement in the meat quality. Results. Adding Ph2Se2 in diets led to increased antioxidant activity of enzymes such as catalase, superoxide dismutase, and glutathione peroxidase,... |
| Tipo: Artigo de periódico |
Palavras-chave: Selênio orgânico; Qualidade da carne; Organic selenium; Antioxidante; Antioxidants; Meat quality. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101931 |
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| Ferreira,Daiane; Unfer,Taís Cristina; Rocha,Hélio Carlos; Kreutz,Luiz Carlos; Koakoski,Gessi; Barcellos,Leonardo José Gil. |
| An experiment was conducted to evaluate the potential of honey, propolis, and bee pollen for the reversal of lipid peroxidation induced by tebuconazole (TEB) in South American catfish (Rhamdia quelen), in which the concentration of thiobarbituric acid reactive substances (TBARS), the activity of the antioxidant enzyme glutathione-S-transferase (GST) and the concentrations of non-enzymatic antioxidants, reduced glutathione (GSH), ascorbic acid, and non-protein thiols were assessed. Honey (0.125 g L-1) and bee pollen (0.05 g L-1) added to the water reverse the production of TBARS induced by TEB, while propolis demonstrated a pro-oxidant effect, inducing an increase in TBARS production. The data presented herein suggest that the addition of water to honey and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; Bee pollen; Honey; Lipid peroxidation; Propolis; Tebuconazole. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000100021 |
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| Sollecito,N.V.; Pereira,E.C.M.; Grázia,J.G.V.; Neves,B.P.; Couto,B.V.R.; Andrade,V.B.; Miranda,M.S.; Silva,J.K.R.; Borges,A.M.. |
| ABSTRACT The aim of this study was to evaluate the supplementation of embryo culture medium with antioxidant obtained from oily extract of Lippia origanoides on in vitro blastocyst development and quality. Oocytes collected from slaughterhouse ovaries were matured and fertilized in vitro following standard laboratory procedures. Zygotes were cultured in SOF medium supplemented according to the following treatments: T1 embryo culture medium without antioxidant supplementation; T2)50μM/mL Cysteamine; T3)2.5μg/mL; T4)5.0μg/mL and T5)10.0μg/mL of antioxidant obtained from oily extract of Lippia origanoides. On the seventh day of culture, the blastocysts were fixed and evaluated for apoptosis rates, number of total cell and inner cell mass cells by means of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; Apoptosis; Lippia origanoides; In vitro embryo production. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000300723 |
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| SILVA,GABRIELA L. DA; LUFT,CAROLINA; LUNARDELLI,ADROALDO; AMARAL,ROBSON H.; MELO,DENIZAR A. DA SILVA; DONADIO,MÁRCIO V.F.; NUNES,FERNANDA B.; AZAMBUJA,MARCOS S. DE; SANTANA,JOÃO C.; MORAES,CRISTINA M.B.; MELLO,RICARDO O.; CASSEL,EDUARDO; PEREIRA,MARCOS AURÉLIO DE ALMEIDA; OLIVEIRA,JARBAS R. DE. |
| Several studies have investigated the antinociceptive, immunomodulatory and anti-inflammatory properties of compounds found in the lavender essential oil (LEO), however to date, there is still lack of substantial data. The objective of this study was to assess the antioxidant, anti-inflammatory and antinociceptive effects of lavender essential oil. The 1,1-diphenyl-2-picrylhydrazyl radical decolorization assay was used for antioxidant activity evaluation. The anti-inflammatory activity was tested using two models of acute inflammation: carrageenan-induced pleurisy and croton oil-induced ear edema. The antinociceptive activity was tested using the pain model induced by formalin. LEO has antioxidant activity, which is dose-dependent response. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; Inflammation; Lavender; Nociception. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000301397 |
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| DIONISIO,Ana Paula; CARVALHO-SILVA,Luciano Bruno de; VIEIRA,Nara Menezes; WURLITZER,Nedio Jair; PEREIRA,Ana Carolina da Silva; BORGES,Maria de Fatima; GARRUTI,Deborah dos Santos; ARAÚJO,Idila dos Santos. |
| Abstract The aim of this study was to evaluate the antioxidant and prebiotic effect of a beverage composed by tropical fruits and yacon in alloxan-induced diabetic rats. To obtain the beverage, a Response Surface Methodology was used, with concentration of yacon extract (x1) and the sweetener (x2) added to a mixture of tropical fruits as independent variables, and the sensorial acceptance as response. The optimized beverage showed higher values for antioxidant capacity, measured by ABTS, FRAP and DPPH assays. Thus, the fructooligosaccharides content (2.32 ± 0.65 g FOS/100 g), total phenolic (126.83 ± 9.48 mg gallic acid equivalent/100 g) and ascorbic acid (171.64 ± 7.31 mg/100 g) shows that the beverage contains high levels of these bioactive compounds. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diabetes; Oxidative estress; Antioxidants; Tropical fruits; Prebiotics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019005031127 |
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| DIONISIO,Ana Paula; CARVALHO-SILVA,Luciano Bruno de; VIEIRA,Nara Menezes; WURLITZER,Nedio Jair; PEREIRA,Ana Carolina da Silva; BORGES,Maria de Fatima; GARRUTI,Deborah dos Santos; ARAÚJO,Idila dos Santos. |
| Abstract The aim of this study was to evaluate the antioxidant and prebiotic effect of a beverage composed by tropical fruits and yacon in alloxan-induced diabetic rats. To obtain the beverage, a Response Surface Methodology was used, with concentration of yacon extract (x1) and the sweetener (x2) added to a mixture of tropical fruits as independent variables, and the sensorial acceptance as response. The optimized beverage showed higher values for antioxidant capacity, measured by ABTS, FRAP and DPPH assays. Thus, the fructooligosaccharides content (2.32 ± 0.65 g FOS/100 g), total phenolic (126.83 ± 9.48 mg gallic acid equivalent/100 g) and ascorbic acid (171.64 ± 7.31 mg/100 g) shows that the beverage contains high levels of these bioactive compounds. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diabetes; Oxidative estress; Antioxidants; Tropical fruits; Prebiotics. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020000100202 |
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| NASCIMENTO,NARA RÚBIA RODRIGUES DO; ALVES,ALINE MEDEIROS; SILVA,MARA REIS; NAVES,MARIA MARGARETH VELOSO. |
| ABSTRACT Pequi (Caryocar brasiliense Camb.) pulp is rich in bioactive compounds. However, seasonality and perishability limit its availability in the market. This work aimed to determine the physicochemical characteristics, including phenolic compounds and carotenoid concentrations, as well as the antioxidant capacity of lyophilized pequi pulp during storage in various packaging materials for 180 days. Pequi fruits were pulped, ground, freeze-dried and then vacuum packaged in transparent polyethylene (TP), polyethylene coated by aluminum foil (PA) and laminated foil (LA), respectively. The samples were stored under controlled temperature, humidity and luminosity. Proximate composition, phenolic compounds and carotenoids concentrations, and antioxidant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; Carotenoids; Caryocar brasiliense; Cerrado; Pequi. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000100901 |
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| LIMA, H. L. S.; BRIGIDA, A. I. S.; NASCIMENTO, E. S. do; BARROSO, M. K. A.; BORGES, M. de F.; GAMA, F. M. P.; ROSA, M. de F.. |
| In this work antioxidant films (AF) based on bacterial cellulose nanofibers (BCNF) and fish skin gelatin peptides (AFSGP) were developed. AFSGP addiction up to ~44% contributes to increase antioxidant activity (Aa) of BCNF films. The films containing AFSGP and sorbitol presented similar opacity compared to BCNF films without AFSGP. Considering the compact nanostructure, Aa, water vapour permeability and thermal stability, BCNF/AFSGP films can be used as bioactive food packing. |
| Tipo: Separatas |
Palavras-chave: Celulose; Tecnologia de Alimento; Tilápia; Gelatina; Peptídeo; Embalagem; Biofilme.; Food technology; Antioxidants; Edible films; Food packaging; Fish; Cellulose; Gelatin.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081324 |
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| Kobus-Cisowska,Joanna; Szczepaniak,Oskar; Szymanowska-Powałowska,Daria; Piechocka,Justyna; Szulc,Piotr; Dziedziński,Marcin. |
| ABSTRACT: Extraction conditions are an important factor in the process of obtaining bioactive compounds from plant matrix. These compounds differ structurally. Structures of phyto-compounds and their interactions with other food ingredient are not fully known, while these two aspects should play a significant role in extrahents choice and determination of extraction process conditions. Mulberry (Morus alba) is a plant growing in Asia, which fruits are rich in bioactive ingredients and high anti-oxidative potential. In our study we analyzed mulberry fruits extracts differing in the extra hent applied: acetone, methanol, ethanol and water. All tested extracts possessed rich polyphenolic composition and radical scavenging ability. The significant differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morus alba; Antioxidants; Phenolic acids; Flavonoids. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100751 |
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| PINELI, L. de L. de O.; RODRIGUES, J. da S. Q.; COSTA, A. M.; LIMA, H. C. de; CHIARELLO, M. D.; MELO, L.. |
| Abstract: BACKGROUND: The study of biodiversity for species recovery and sustainable use has encouraged research with plants from Brazilian savannah. We aimed to characterize chemical and sensory properties of infusions of passifloras, due to their potential as functional beverages. Infusions and hydroalcoholic extracts of four species of wild passifloras, three varieties of Passiflora edulis and a commercial passiflora tea were evaluated for total phenolics (TPs), total flavonoids (TFs), condensed tannins (CTs), and antioxidant activity (DPPH and FRAP). Free-choice Profile and acceptance, compared with green tea, were performed for sensory characterization. RESULTS: In general, infusions had higher levels of TPs and CTs than hydroalcoholic extracts, which... |
| Tipo: Separatas |
Palavras-chave: Infusões; Maracujá; Composto fenólico; Antioxidante; Analise organoleptica; Cerrado; Passion fruits; Phenolic compounds; Antioxidants; Sensory evaluation; Savannas; Brazil. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1039283 |
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| LOTITO,SILVINA B; FRAGA,CESAR G. |
| We evaluated the interaction between ascorbic acid (AA) and (+)-catechin (CTCH) in potassium phosphate solution, pH 7.4 (PPS) and in human plasma. In both systems, the oxidation was started by adding 2,2-azobis-(2-amidinopropane) clorhidrate (AAPH). The concentrations of AA and CTCH were determined by HPLC using electrochemical detection. In PPS, CTCH was oxidized by AAPH (50 muM), in either the absence or presence of different initial concentrations of AA (25-200 muM). In the presence of AA, CTCH depletion was delayed, an effect that was dependent upon the initial concentration of AA. When 100 muM AA was added after the oxidation had begun, CTCH depletion was arrested for 30 min. The kinetics of AA oxidation by AAPH was also characterized in PPS. AA (100... |
| Tipo: Journal article |
Palavras-chave: Catechins; Antioxidants; Free radicals; Procyanidins. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000200015 |
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| Pugliese,Camila; Patin,Rose Vega; Palchetti,Cecilia Zanin; Claudio,Cristiane Chiantelli; Gouvêa,Aída de Fátima Thomé Barbosa; Succi,Regina Célia de Menezes; Amancio,Olga Maria Silverio; Cozzolino,Silvia Maria Franciscato; Oliveira,Fernanda Luisa Ceragioli. |
| Objective:This study aims to assess the nutritional status of selenium, copper and zinc; and also the erythrocyte superoxide dismutase activity of HIV-infected children compared to a control group.Methods:A cross-sectional study was carried out with prepubertal HIV-infected children (n = 51) and their healthy siblings (n = 32). All biochemical measurements including plasma selenium, serum copper levels, serum and erythrocyte zinc levels and erythrocyte super-oxide dismutase activity were evaluated according to dietary, clinical and biochemical parameters.Results:Compared to the control group, the HIV-infected children had lower z-score values for height-for-age (p = 0.0006), higher prevalence of stunting (11.8%) (p = 0.047), lower selenium levels (p =... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; HIV and nutrition; Oxidative stress; Trace elements. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000500481 |
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| Registros recuperados: 171 | |
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