Total Phenols
Mostrando 13-24 de 135 artigos, teses e dissertações.
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13. Biochemical descriptors: importance of the genetic divergence study in peppers
RESUMO A diversidade genética de genótipos de pimentas é comumente avaliada com base em descritores morfológicos e moleculares, no entanto, estudos empregando descritores bioquímicos em pimenta ainda são incipientes. Dessa forma, o objetivo deste trabalho foi identificar em Capsicum spp. os descritores bioquímicos com ação antioxidante mais responsi
Hortic. Bras.. Publicado em: 18/07/2019
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14. Maturation and Maceration Effects on Tropical Red Wines Assessed by Chromatography and Analysis of Variance - Principal Component Analysis
Effects of grape maturity, maceration length during winemaking and interaction of both of them on physicochemical parameters, phenolic and volatile composition were investigated in tropical Syrah wines with the aim of finding the best conditions to produce wines that are rich in phenols and positive aroma active compounds. A headspace solid phase micro extra
J. Braz. Chem. Soc.. Publicado em: 04/07/2019
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15. Chemical interaction between white onion, as natural antioxidant, on shrimp stored under freezing
Abstract The impact of white onion as a natural antioxidant on the lipid profile of “Vila Franca” shrimp (Litopenaeus schmitti Burkenroad, 1938), during storage under freezing, was evaluated by changes in the composition of fatty acids, carotenoids, centesimal composition and phenols. The lipid content in the shrimp samples in natura and with white onion
Food Sci. Technol. Publicado em: 06/06/2019
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16. Evaluation of the potential astringency of the skins and seeds of different grape varieties based on polyphenol/protein binding
Abstract The potential astringency of eight grape cultivars was evaluated based on polyphenol/protein binding. The parameters such as weights, sizes, total phenols, flavanols and tannins of different grape tissues were determined, and the polyphenol/protein binding was analyzed by SDS-PAGE and spectroscopy. The Cabernet Sauvignon had the highest skin proport
Food Sci. Technol. Publicado em: 30/05/2019
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17. Physicochemical and antioxidant properties of methanol extract from Maca (Lepidium meyenii Walp.) leaves and roots
Abstract In this study, we examined the phytochemical properties and antioxidant activities of the methanol extracts of maca (Lepidium meyenii Walp.) leaves and roots. A total of 25 chemical compounds were identified by LC-Q-TOF and classified as saponins, phenols, flavonoids, steroids, alkybenzenes, and amines. Among all the chemical compounds identified, t
Food Sci. Technol. Publicado em: 02/05/2019
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18. Optimization of a technique to quantify the total phenolic compounds in jambolan ( Syzygium cumini Lamark) pulp
Resumo São conhecidos vários métodos de extração que podem ser aplicados para a quantificação de compostos fenólicos e, portanto, cabe ao pesquisador aperfeiçoar o processo que melhor se aplica à amostra em questão. Diferentes solventes de extração (extração líquido-líquido) foram comparados a fim de avaliar a sua eficácia para a análise
Braz. J. Food Technol.. Publicado em: 18/04/2019
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19. Changes in phenolics and antioxidant capacity during short storage of ready-to-drink green tea (Camellia sinensis) beverage at commercial conditions
ABSTRACT The objective of this research was to evaluate the changes of phenolics and antioxidant capacity of a ready-to-drinkgreen tea beverage during short storage at commercial conditions. The total phenols (Folin-Ciocalteu), total catechins (4-dimethylaminocinnamaldehyde) and total non-catechins (difference between total phenols and total catechins) were
Bragantia. Publicado em: 17/01/2019
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20. Phenolic compounds, total antioxidant capacity and volatile components of Cabernet Sauvignon red wines from five different wine-producing regions in China
Abstract The purpose of this study was to elucidate the influence of terroir on the polyphenolic compounds, total antioxidant and aroma components of Cabernet Sauvignon red wines from five different wine-producing regions in China. The results obtained showed that the phenols concentrations and total antioxidant capacities from new wine 1 (NW1) were signifi
Food Sci. Technol. Publicado em: 29/11/2018
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21. Technologies applied to sorghum (Sorghum bicolor L. Moench): changes in phenolic compounds and antioxidant capacity
Abstract The search for foods with biological potential for the prevention of chronic diseases has highlighted sorghum, and numerous studies have been conducted to determine the best processing conditions without compromising the nutritional, functional or sensory qualities. We conducted a review of the scientific literature on the techniques used in sorghu
Food Sci. Technol. Publicado em: 09/08/2018
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22. Alpha amylase and Alpha glucosidase inhibitory effects of aqueous stem extract of Salacia oblonga and its GC-MS analysis
ABSTRACT Our present investigation deals with the phytochemical screening, estimation of total flavonoids, terpenoids and tannin contents to evaluate the anti-diabetic activities of Salacia oblonga stem followed by GC-MS analysis. It explores the natural compounds and the potential α-amylase and α-glucosidase inhibitory actions of stem extracts. The aqueou
Braz. J. Pharm. Sci.. Publicado em: 14/05/2018
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23. Total phenolic, flavonoid, alkaloid and iridoid content and preventive effect of Lider-7-tang on lipopolysaccharide-induced acute lung injury in rats
Lider-7-tang, a medicine used for the treatment of respiratory diseases especially pneumonia and fever in Mongolian Traditional Medicine, was selected for this phytochemical and pharmacological study. The objectives of the study were to determine total biological active substances and analyze the effects of Lider-7-tang treatment in rats with acute lung inju
Braz J Med Biol Res. Publicado em: 19/10/2017
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24. PROPIEDADES FISICOQUÍMICAS DE MIELES MONOFLORALES DE ENCENILLO DE LA ZONA ALTOANDINA EN BOYACÁ, COLOMBIA
Honey is the natural product with sweetening properties more widely known, is produced by bees from the nectar of flowers and secretions from the plants. Its physicochemical properties depend on the season of harvest, environmental factors prevailing in the harvest period and the biogeographic zones. The aim of this work was focused in honeys produced by Wei
Quím. Nova. Publicado em: 2017-09