Antioxidant Assays
Mostrando 13-24 de 186 artigos, teses e dissertações.
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13. In vitro potential activity of some seaweeds as antioxidants and inhibitors of diabetic enzymes
Abstract In this study crude extracts of Turbinaria decurrens, Padina pavonica, Sargassum muticum and Sargassum acinarium (Phaeophyta); Ulva lactuca (Chlorophyta) and Pterocladia capillacea (Rhodophyta) seaweeds were tested to evaluate their antioxidant properties and antidiabetic potential on α-amylase and α-glucosidase starch hydrolyzing enzymes. The res
Food Sci. Technol. Publicado em: 20/12/2019
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14. Antioxidant and prebiotic effects of a beverage composed by tropical fruits and yacon in alloxan-induced diabetic rats
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 variable
Food Sci. Technol. Publicado em: 20/12/2019
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15. Chemical composition and bioactivity of methanolic extract obtained from Lepista sordida
The present study aimed at the evaluation of chemical composition and bioactive potential of methanolic extract obtained from Lepista sordida in terms of antioxidative and antimicrobial efficacy. The macrofungus is recognized for its high nutritional value and medicinal properties. However, to the best of our knowledge bioactivity of its methanolic extract i
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
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16. Characterization of biochemical compounds and antioxidant activity of “dedo-de-moça” chili pepper accessions
RESUMO Capsicum baccatum é uma das principais espécies de pimenta cultivadas e consumidas na América do Sul. No Brasil, C. baccatum var. pendulum é amplamente cultivada, especialmente a pimenta do tipo “dedo-de-moça”. Para a maioria das culturas hortícolas, incluindo as espécies de Capsicum, a diversidade genética permanece subexplorada para cara
Hortic. Bras.. Publicado em: 09/12/2019
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17. Potential of some autochthonous wild plants of Burundi for vegetable oil and valuable compounds production
Resumo Doze espécies de plantas indígenas foram estudadas para valorizar alguns recursos naturais do Burundi (África Oriental), para investigar as possibilidades de produção de óleo vegetal. As propriedades físico-químicas e o conteúdo de óleo foram determinados com base em sementes colhidas em cinco zonas ecogeográficas. A partir de extratos de b
Braz. J. Biol.. Publicado em: 02/12/2019
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18. Optimization of ultrasound-assisted enzymatic extraction and in vitro antioxidant activities of polysaccharides extracted from the leaves of Perilla frutescens
Abstract A Box-Behnken design was employed to optimize ultrasound-assisted enzymatic extraction of polysaccharides from perilla leaves. Four independent variables, namely, liquid-to-solid ratio, enzymatic time, enzymatic temperature, and ultrasonic power were investigated. Under the optimal liquid-to-solid ratio of 41:1, enzymatic time of 40 min, enzymatic t
Food Sci. Technol. Publicado em: 25/11/2019
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19. Effects of different heat treatments on the antioxidant activity and ascorbic acid content of bitter melon, Momordica charantia
Resumo Este estudo investiga o efeito de diferentes tratamentos térmicos, a saber, fervura, cozimento em micro-ondas e cozimento sob pressão sobre o ácido ascórbico e a atividade antioxidante no extrato de Momordica charantia. A atividade antioxidante total dos extratos de M. charantia foi determinada pelo poder redutor-antioxidante férrico e pelos ensa
Braz. J. Food Technol.. Publicado em: 14/11/2019
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20. Analysis of the Seasonal Variation in Chemical Profile of Piper glabratum Kunth Essential Oils Using GC×GC/qMS and Their Antioxidant and Antifungal Activities
Piper glabratum is a plant native from South America, which has been little studied, despite its use in folk medicine. In this study, chemical composition, antioxidant and antifungal activities of essential oils (EOs) from leaves of P. glabratum were investigated. The influence of seasonality on its chemical composition was also evaluated. The chemical chara
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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21. Antioxidant and cytotoxic properties of protein hydrolysates obtained from enzymatic hydrolysis of Klunzinger’s mullet (Liza klunzingeri) muscle
Today, consumers are looking for functional foods that promote health and prevent certain diseases in addition to provide nutritional requirements. This study aimed to evaluate the antioxidant and cytotoxic properties of Liza klunzingeri protein hydrolysates. Fish protein hydrolysates (FPHs) were prepared from L. klunzingeri muscle using enzymatic hydrolysis
Braz. J. Pharm. Sci.. Publicado em: 24/10/2019
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22. Physicochemical Characterization, Antioxidant Potential and Sensory Quality of Wine from Wild Edible Fruits of Flacourtia montana J. Graham
Abstract The objective of the present study was to produce wine from wild edible fruits of Flacourtia montana J. Graham. The various physicochemical attributes including total phenolic content and total flavonoid content were analyzed. Further, the prepared wine was evaluated for the antioxidant potential using four different assays, viz., 2,2'-azino-bis(3-e
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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23. Kalanchoe laciniata and Bryophyllum pinnatum: an updated review about ethnopharmacology, phytochemistry, pharmacology and toxicology
Abstract The species Kalanchoe laciniata (L.) DC. and Bryophyllum pinnatum (Lam) Pers. are native from Brazil and Madagascar, respectively. Both belonging to the Crassulaceae family and being widely used by population as a natural anti-inflammatory agent. These species have similar leaf morphology and for this reason, they are known by the same popular name
Rev. bras. farmacogn.. Publicado em: 17/10/2019
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24. Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa
Resumo Algas marinhas têm um número crescente de aplicações bem-sucedidas nas indústrias de alimentos, de produtos farmacêuticos e de cosméticos, o que aumenta a importância de se avaliar sua composição química. No presente estudo, três algas marinhas comuns no Egito (Dictyota dichotoma, Turbinaria decurrens e Laurencia obtusa) foram coletadas do
Braz. J. Food Technol.. Publicado em: 12/09/2019