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| Registros recuperados: 76 | |
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| ZIELINSKI,Acácio Antonio Ferreira; ALBERTI,Aline; BONA,Evandro; BORTOLINI,Débora Gonçalves; BENVENUTTI,Laís; BACH,Fabiane; Demiate,Ivo Mottin; NOGUEIRA,Alessandro. |
| Abstract The consumption of yerba mate beverages is related to several health benefits. These desirable properties are mainly due to the bioactive compounds. However, the levels of those compounds are directly affected by factors such as geographical origin. This study aimed to use chemometrics to evaluate the antioxidant compounds of yerba mate (consumed as chimarrão) marketed in southern Brazil. Neochlorogenic acid and caffeine were the main bioactive compounds found in this type of yerba mate beverage (chimarrão). The dataset was analyzed by chemometrics, and principal component analysis using the first three principal components explained 61.30% of the total variance. Hierarchical cluster analysis suggested three clusters, with cluster 1 containing the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioactive compounds; Geographical origin; Chimarrão; HPLC; Pattern recognition. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020005006204 |
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| El-Aziz,Tarek Mohamed Abd; Khoury,Sawsan Al; Jaquillard,Lucie; Triquigneaux,Mathilde; Martinez,Guillaume; Bourgoin-Voillard,Sandrine; Sève,Michel; Arnoult,Christophe; Beroud,Rémy; Waard,Michel De. |
| Abstract Background Sperm contains a wealth of cell surface receptors and ion channels that are required for most of its basic functions such as motility and acrosome reaction. Conversely, animal venoms are enriched in bioactive compounds that primarily target those ion channels and cell surface receptors. We hypothesized, therefore, that animal venoms should be rich enough in sperm-modulating compounds for a drug discovery program. Our objective was to demonstrate this fact by using a sperm-based phenotypic screening to identify positive modulators from the venom of Walterinnesia aegyptia. Methods Herein, as proof of concept that venoms contain interesting compounds for sperm physiology, we fractionated Walterinnesia aegyptia snake venom by RP-HPLC and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Snake venom; Walterinnesia aegyptia; Bioactive compounds; Fertility; Sperm motility; Venomics; Tandem mass spectrometry; De novo sequencing; Edman degradation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992018000100301 |
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| Kirinus,Marines Batalha Moreno; Oliveira,Roberto Pedroso de; Silva,Pricila Santos da; Barreto,Caroline Farias; Malgarim,Marcelo Barbosa; Soares Filho,Walter dos Santos. |
| Abstract: The objective of this work was to evaluate the agronomic performance of 'Valência' sweet orange (Citrus sinensis) tree, in combination with 13 rootstocks cultivated in soil and climate conditions of the Brazilian state of Rio Grande do Sul. The following agronomic variables were evaluated: scion height and volume, plant production, production efficiency, productivity, fruit diameter, fruit mass, peel mass, juice yield, soluble solids content, titratable acidity, soluble solids:acidity ratio, ascorbic acid, peel color, antioxidant capacity, and phenolic compounds. A randomized complete block experimental design was used, with three replicates and nine plants per plot, in a two-factor arrangement (13 rootstocks and the 2015 and 2016 harvests). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Bioactive compounds; Fruit quality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102700 |
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| Marques,Marcelo Rodrigues; Paz,Diego Damasceno; Batista,Lívia Patrícia Rodrigues; Barbosa,Celma de Oliveira; Araújo,Marcos Antônio Mota; Moreira-Araújo,Regilda Saraiva dos Reis. |
| This study assessed the antioxidant, total phenolic, and physicochemical properties of in vitro Terminalia Catappa Linn (locally called castanhola) using the DPPH assay. The castanhola fruits had an average weight of 19.60 ± 0.00 g, combining shell, pulp, and seed weight, and a soluble solids content of 8 °Brix. The chemical composition was determined with predominance of carbohydrates (76,88 ± 0,58%).The titration method was used to determine Vitamin C content using 2,6-dichlorophenolindophenol (DCFI), known as reactive Tillmans resulting in no significant levels. Aqueous extracts of castanhola pulp showed a higher concentration of phenolics, 244.33 ± 18.86 GAE.g-1 of fruit, and alcoholic extracts, 142.84 ± 2.09 GAE.g-1 of fruit. EC50 values of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical fruit; Functional properties; Bioactive compounds. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100031 |
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| Manilal,A; Sujith,S; Selvin,J; Shakir,C; Seghal Kiran,G. |
| The antibacterial property of the red algae, Falkenbergia hillebrandii (Born) collected from the southwest coast of India (Indian Ocean) was evaluated against three multidrug resistant human pathogens. Four different solvents: ethyl acetate, dichloromethane, methanol and phosphate buffer saline (PBS) were used with this purpose. Dried samples extracted with methanol showed broadest and highest antimicrobial activity when compared to other solvents. However, PBS extract showed no antibacterial activity. The highly active compounds red alga, F. hillebrandii were fractionated and purified using different chromatographic systems, including reverse phase HPLC and GCMS. The analysis revealed that the most abundant metabolite was the oleic acid (51.33%) followed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial activity; F. hillebrandii; Multidrug resistant human pathogens; Methanolic extract; Bioactive compounds. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572009000200013 |
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| Ferreira,Maria Jaiana Gomes; Nogueira,Patrícia Coelho do Nascimento; Dias,Flayanna Gouveia Braga; Silva,Larissa Morais Ribeiro da; Silveira,Edilberto Rocha; Figueiredo,Evânia Altina Teixeira de. |
| ABSTRACT: The plant, Amburana cearensis A. C. Smith (Fabaceae), commonly called cumaru, is widespread in the Caatinga cearense, a less known ecosystem in Brazil. A. cearensis is rich in several compounds like protocatechuic acid, tannins, coumarin, flavonoids and phenolic heterosides, such as amburosides A and B, that have been isolated. The aim of this study was to determine the antimicrobial potential and draw the chemical profile of the distinct characteristics of A. cearensis stem bark decoction, for its possible potential as a food conservation agent. The chemical compounds were characterized by one- and two-dimensional 1H and 13C NMR analyses and Liquid Chromatography-Mass Spectrometry (LCMS). The compounds of coumarin, amburosides A and B, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioactive compounds; Microorganisms; Natural antimicrobials. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300452 |
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| 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 |
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| Sandri,Ivana Greice; Piemolini-Barreto,Luciani Tastch; Fontana,Roselei Claudete; Silveira,Mauricio Moura da. |
| In the present study, the effect of pectinases on the production of pulp and juice of araçá and the presence of bioactive compounds were evaluated. An enzyme extract (EE) produced by Aspergillus niger LB-02-SF in solid state fermentation and the commercial enzyme Ultrazym®AFP-L were used in this study. After enzyme treatment with the EE preparation, the extraction yield increased by 23.1% and viscosity decreased by 42.8%, during pulp maceration. During juice processing, there was an increase of 70.6% in clarification and a decrease of 72.87% in turbidity. Higher values of these parameters, 47.7, 69.0, 80.7, and 79.7%, respectively, were obtained using the Ultrazym®AFP-L, which also led to a significant increase in the polyphenol content, both in the pulp... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus niger; Yield; Clarification; Bioactive compounds. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000400002 |
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| Duarte,Patrícia Fonseca; Chaves,Marcia Alves; Borges,Caroline Dellinghausen; Mendonça,Carla Rosane Barboza. |
| ABSTRACT: This study aimed to present a literature review about the characteristics, applications, and potential of avocado (Persea americana). Avocado is considered one of the main tropical fruits, as it contains fat-soluble vitamins which are less common in other fruits, besides high levels of protein, potassium and unsaturated fatty acids. Avocado pulp contains variable oil content, and is widely used in the pharmaceutical and cosmetics industry, and in the production of commercial oils similar to olive oil. This fruit has been recognized for its health benefits, especially due to the compounds present in the lipidic fraction, such as omega fatty acids, phytosterols, tocopherols and squalene. Studies have shown the benefits of avocado associated to a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avocado tree; Avocado oil; Unsaturated fatty acid; Bioactive compounds. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400747 |
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| Dias,Flayanna Gouveia Braga; Ferreira,Maria Jaiana Gomes; Silva,Larissa Morais Ribeiro da; Menezes,Rayanne Clécia de Sousa; Figueiredo,Evânia Altina Teixeira de. |
| ABSTRACT Plant diversity around the world, as well as the chemical variation, involves a large amount of bioactive substances. The use of plant extracts with biological properties appears as a viable and healthy alternative when compared to synthetic substances. In this context, the objective of this study was to evaluate the aqueous extracts of native and cultivated leaves of Physalis angulata L., as well as the influence of the extraction method on the bioaccessibility of bioactive compounds, antioxidant activity and antimicrobial activity. The extracts were obtained from the native and cultivated leaves of P. angulata using three different extraction methods: decoction, maceration and an ultrasound-assisted method. The analysis of variance showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial potential; Antioxidant potential; Bioactive compounds. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300411 |
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| DAVIES,Cristina Verónica; GERARD,Liliana Mabel; FERREYRA,María Mercedes; SCHVAB,María del Carmen; SOLDA,Carina Alejandra. |
| Abstract Citrus fruits are significant sources of bioactive compounds, such as ascorbic acid, polyphenols and carotenoids, due to their antioxidant properties important for human nutrition. In addition, since oranges possess high sugar content (8-15%), making vinegars from alcoholic orange substrates, with functional characteristics is a possible development of novel products. The aim of this research work was to analyze changes in ascorbic acid, total phenolics, total carotenoids and antioxidant activity during orange vinegar processing. In order to analyze the influence of acetification and aging in these characteristics, samples were taken in three stages: orange alcoholic substrate for acetification (SNA), young orange vinegar or recently obtained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Orange vinegar; Antioxidant activity; Bioactive compounds. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300449 |
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| ARAÚJO,Ana Cristina Moreira Andrade; MENEZES,Evandro Galvão Tavares; TERRA,André William Costa; DIAS,Bruna Oliveira; OLIVEIRA,Érica Resende de; QUEIROZ,Fabiana. |
| Abstract Pequi, murici and sweet passionfruit are typical fruits from Brazilian Cerrado, which stand out for their sensory attributes such as color, flavor and aroma, in addition to their high nutritional value. Their seeds are by-products from the industrial processing of juices, pulps, jellies, and others, and have great exploitation potential due to their high oil content and the presence of bioactive compounds. The present work aimed to evaluate the chemical composition of pequi almonds, and of murici and sweet passionfruit seeds, and also to quantify the total phenolic compounds, carotenoids, anthocyanins and antioxidant activity by the scavenging activity of •DPPH method. Concerning the chemical composition, pequi almonds presented the highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioactive compounds; Antioxidants; Polyphenols; Anthocyanins; Nutritional composition. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000500203 |
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| MARINHO-PRADO, J. S.; QUEIROZ, S. C. do N. de; PRADO, S. de S.; ASSIS, M. C. de. |
| Resumo: Os extratos vegetais de quatro espécies das famílias Asteraceae e Verbenaceae foram avaliados quanto a bioatividade sobre as lagartas Anticarsia gemmatalis Hubner, 1818 (Lepidoptera: Erebidae) e Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae). Os extratos hexânicos, diclorometânicos, metanólicos e aquosos de Clerodendrum splendens, Conyza canadensis, Tithonia diversifolia e Vernonanthura westiniana foram oferecidos às lagartas por ingestão em ensaios, avaliando-se a biologia e o comportamento desses insetos. Os extratos vegetais de C. splendens em diclorometano e hexano e de V. westiniana em metanol avaliados sobre A. gemmatalis causaram altas taxas de mortalidade observadas nas lagartas, sendo que o extrato de C. splendens em diclorometano... |
| Tipo: Folhetos |
Palavras-chave: Vernonanthura westiniana; Clerodendrum splendens; Extrato Vegetal; Praga de Planta; Anticarsia Gemmatalis; Helicoverpa armigera; Bioactive compounds; Conyza canadensis; Tithonia diversifolia. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1095015 |
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| Kabiri, Ghizlane; Bouda, Said; Elhansali, Mohammed; Haddioui , Abdelmajid. |
| Biochemical composition and antioxidant activity were determined in kernel nuts for eleven Moroccan walnut (Juglans regia L.) accessions representing its main cropping area. Total oil, carbohydrates, crude protein, energy value, crude fiber and flavonoid have varied significantly between accessions, respectively within the range values of 54.50-65.48%, 8.17-19.25%, 11.5-25.58%, 648.91-713.83 Kcal, 4.17-6.75% and 12.59-62.11mg RE 100 g-1 DM. Besides, mineral composition (mg 100 g-1) of kernel have varied also significantly among accessions and particularly for phosphorus (338.1-675.87), copper (2.08-6.67), zinc (3.39-18.63), iron (1.17-2.64), chromium (0.16-0.20), nickel (1.26-1.45) and boron (0.07-1.49). However, dry matter (96.75-98.56%),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Variation; Proximate composition; Mineral composition; Bioactive compounds. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/46411 |
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| Fernandes,Maurette dos Reis Vieira; Silva,Tales Alexandre Costa e; Pfenning,Ludwig Heinrich; Costa-Neto,Cláudio Miguel da; Heinrich,Tassiela Andréa; Alencar,Severino Matias de; Lima,Marisa Aparecida de; Ikegaki,Masaharu. |
| A total of 22 endophytic fungi isolated from coffee (Coffea arabica L.) were cultivated in vitro and their crude extracts tested. The screening was carried out using the agar diffusion method against Staphylococcus aureus, Escherichia coli and Candida albicans. The most effective isolate was Alternaria alternata, and subsequently, its extract was assayed. The total phenolic content was 3.44 μg GAE/mg of the crude extract. For the antibacterial and antifungal activity assays, minimum inhibitory concentrations (MIC) and minimum bactericidal and fungicidal concentrations (MBC and MFC) were determined. The ranges of MIC values were 50-100 μg/mL for S. aureus and 400-800 μg/mL for E. coli. The extract did not show activity in the tested concentrations for C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endophytic fungi; Bioactive compounds; Alternaria alternata/extract/antioxidant activity. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000400010 |
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| SILVA,Emerson Gabriel dos Santos Oliveira; RANGEL,Adriano Henrique do Nascimento; MÜRMAM,Lisandra; BEZERRA,Maria Fátima; OLIVEIRA,Juliana Paula Felipe de. |
| Abstract Colostrum is the first secretion of the mammary gland produced after birth, differentiating itself from mature milk because it has a higher concentration of proteins, immunoglobulins, vitamins, minerals, bactericides (lactoferrin, lysozyme and lactoperoxidase) and growth factors. The use of bovine colostrum for human consumption has been registered for many years in food or in medicinal therapies, and several studies have been conducted with the objective of evaluating its benefits in human food supplementation. The results point to improvements in cases of gastrointestinal, respiratory, inflammation, and bone development diseases, among others. Its commercialization currently takes place in physical or online markets in some countries. However,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional food; Bioactive compounds; Lactoferrin; Lysozyme. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600355 |
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| Registros recuperados: 76 | |
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