Phenols
Mostrando 25-36 de 383 artigos, teses e dissertações.
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25. Row orientation effects on Syrah grapevine performance during winter growing season
ABSTRACT The sunlight and heating effects on leaves and grapes are directly influenced by row orientation in vineyards. Row orientation studies have not been addressed under double pruning management, a technique used to transfer the wine grape harvest from wet summer to dry winter season in Brazilian Southeast. Effects of grapevine row orientation (north/so
Rev. Ceres. Publicado em: 12/08/2019
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26. Production and Characterization of the Bio-Oil Obtained by the Fast Pyrolysis of Spent Coffee Grounds of the Soluble Coffee Industry
Agro-industrial wastes are abundant and low-cost sources of energy and chemicals. Biomass account for 14% of the world’s energy production. Industrial residues of production of soluble coffee (spent coffee grounds - SCG) have great potential due to its large-scale production and can be transformed by pyrolysis, in liquid, solid and gaseous products with ap
J. Braz. Chem. Soc.. Publicado em: 12/08/2019
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27. 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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28. 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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29. 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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30. 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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31. 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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32. 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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33. Phytochemical Characterization and Effect of Cagaita Leaf Extracts on Aspergillus Sp.
ABSTRACT Fungi of the genus Aspergillus may promote damage to the physiological quality of forest seeds, and plant extracts have been used to control microflora associated with these seeds. Thus, the aim of the present work was to perform the phytochemical characterization of ethanolic and aqueous extracts obtained from Eugenia dysenterica leaves (cagaita),
Floresta Ambient.. Publicado em: 04/04/2019
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34. Antiplasmodial evaluation of Anacardium occidentale and alkyl-phenols
Abstract The ethanol crude extract from cashew (Anacardium occidentale L. Anacardiaceae) displayed significant antiplasmodial activity (IC50 0.577 µg/ml). Liquid chromatography-high resolution Mass spectrometry analysis was performed to identify the main compounds existing in the ethanol extract. The occurrence of anacardic acids, cardols, and 2-methylcardo
Rev. bras. farmacogn.. Publicado em: 2019-02
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35. Processing, nutritional composition and health benefits of finger millet in sub-saharan Africa
Abstract Finger millet (Eleusine coracana) also known as tamba, is a staple cereal grain in some parts of the world with low income population. The grain is characterized by variations in colour (brown, white and light brown cultivars); high concentration of carbohydrates, dietary fibre, phytochemicals and essential amino acids; presence of essential minera
Food Sci. Technol. Publicado em: 31/01/2019
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36. 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