Flavanols
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Comparison of phenolics, antioxidant capacity and total phenol bioaccessibility of Ribes spp. grown in Turkey
Abstract In this study, anthocyanins (13), flavanols (6), phenolic acids (10), flavonol glycosides (17), antioxidant capacity, and bioaccessible phenolic content of Ribes spp., grown in Turkey were investigated. Individual phenolic compounds were identified and quantified with LC-QTOF/MS in red and black currants and hybrid Jostaberry. Significant variations
Food Sci. Technol. Publicado em: 2020-12
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2. Effects of Soil and Vineyard Characteristics on Volatile, Phenolic Composition and Sensory Profile of Cabernet Sauvignon Wines of Campanha Gaúcha
The influence of vineyard on wines was evaluated for the first time using a broader analytical approach: sensory analyses and several analytical techniques (gas chromatography-mass spectrometry (GC-MS), GC flame ionization detection (FID), GC-olfactometry-Osme technique (GC-O-Osme), GC × GC-MS), taking into account odoriferous compounds of Cabernet Sauvigno
J. Braz. Chem. Soc.. Publicado em: 2020-06
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3. ANÁLISES MELISSOPALINOLÓGICAS, FÍSICO-QUÍMICAS, ATIVIDADE ANTIRRADICALAR E PERFIL QUÍMICO POR UPLC-DAD-QTOF-MS/MS DOS MÉIS DE Frieseomelitta doederleini (ABELHA BRANCA): COMPARAÇÃO COM OS FENÓLICOS PRESENTES NAS FLORES DE Mimosa tenuiflora (JUREMA PRETA)
Melissopalynological, physicochemical analysis, mineral content, antiradical activity and profile of compounds by Ultra-Performance Liquid Chromatography coupled with a Diode Array Detector and quadrupole Time of Flight Mass Spectrometry (UPLC-DAD-qTOF-MS/MS) of Frieseomelitta doederleini honeys from semiarid region of the Northeast of Brazil are presented.
Quím. Nova. Publicado em: 21/10/2019
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4. 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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5. Effect of fruit ripening on bioactive compounds and antioxidant capacity of apple beverages
Abstract The effect of the variety (Gala, Lis Gala and Fuji Suprema) and the ripening stage (unripe, ripe and senescent) of apples on the phenolic compounds (HPLC) and antioxidant capacity (FRAP and DPPH) of apple juices and ciders were evaluated. The phenolic content of the Gala and Lis Gala apple juices decreased from the unripe to ripe stages and increas
Food Sci. Technol. Publicado em: 26/07/2018
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6. Melatonin treatment of pre-veraison grape berries modifies phenolic components and antioxidant activity of grapes and wine
Abstract A comprehensive investigation was conducted to determine the effects of exogenous melatonin treatment of pre-veraison grapes on phenolic components and antioxidants of grape berries and wine. The results showed an increase in the concentration of cyanin-3-O-glucoside, peonidin derivatives, and two flavanols [namely (+)-catechins and (−)-epicatechi
Food Sci. Technol. Publicado em: 11/01/2018
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7. Isolation and characterization of flavanols from Anthocephalus cadamba and evaluation of their antioxidant, antigenotoxic, cytotoxic and COX-2 inhibitory activities
ABSTRACT In search of lead molecules for use in disease prevention and as food additive from natural sources, two flavanols were isolated from leaves of Anthocephalus cadamba (Roxb.) Miq., Rubiaceae. Their structures were established as 6-hydroxycoumarin-(4"→8)-(-)-epicatechin and 6-hydroxycoumarin-(4"→8)-(-)-epicatechin-(4→6‴)-(-)-epicatechin on the
Rev. bras. farmacogn.. Publicado em: 2016-08
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8. Influence of phenolic compounds of Kangra tea [Camellia sinensis (L) O Kuntze] on bacterial pathogens and indigenous bacterial probiotics of Western Himalayas
Phenolic compounds of nutraceutical importance viz., catechins (C), (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-epigallocatechin-3-gallate (EGCG) and (-)-epicatechin-3-gallate (ECG) were estimated in fresh green tea shoots of Camellia sinensis (L) O Kuntze cultivar. The total polyphenols and total catechins were in the range of 219.90 to 317.81 and
Braz. J. Microbiol.. Publicado em: 2013-09
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9. Atividades antioxidante, anti-inflamatÃria e cicatrizante do caju (Anacardium occidentale L.) / Antioxidant, anti-inflammatory and wound healing activities of cashew apple (Anacardium occidentale L.) juice
Anacardium occidentale L. (Anacardiaceae), known as cashew, is a typical tropical pseudo whose juice is highly consumed in Brazil for its excellent sensory and nutritional properties. The aim of this study was to evaluate the antioxidant, anti-inflammatory and wound healing activities of cashew apple in vitro and in vivo. The juice from fresh fruit were obta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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10. Influência de taninos enológicos em diferentes dosagens e épocas distintas de aplicação nas características físico-químicas do vinho Cabernet Sauvignon / Influence of different doses and distinct times of application of Enological tannins on the physicochemical characteristics of the Cabernet Sauvignon wine
O trabalho foi conduzido em Bento Gonçalves, RS, com uvas Cabernet Sauvignon, cultivar destacada no Brasil pela produção de vinhos tintos de guarda. Como outras cultivares na Serra Gaúcha, possui, em determinadas safras, dificuldades para uma adequada maturação, dificultando a elaboração de vinhos estruturados. Dentre as estratégias para minimizar e
Publicado em: 2011
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11. Enriquecimento de compostos fenólicos de folhas de Inga edulis por extração em fase sólida: quantificação de seus compostos majoritários e avaliação da capacidade antioxidante
A phenolic fraction was obtained from of the acetone-water-acetic acid extract of Inga edulis leaves, by liquid-liquid partition and SPE-C18 cartridges. This method provided an increase of 108, 66, 51, 50 and 36% of flavonols, proanthocyanidins, total polyphenols, gallotannins and flavanols, respectively. The major phenolics in purified fraction were procyan
Química Nova. Publicado em: 2010
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12. Chemical and biological studies from Coccoloba mollis Casaretto (1844) and Triplaris americana Linnaeus (Polygonaceae). / Estudo Químico e Biológico de Coccoloba mollis Casaretto (1844) e Triplaris americana Linnaeus (Polygonaceae).
O presente trabalho descreve o estudo químico, monitorado pelas atividades antioxidantes (DPPH, quantificação de fenóis totais, poder de redução Fe3+-Fe2+ e oxidação total pelo método FTC), anticolinesterásica e larvicida (larvas do 4o ínstar do Aedes aegypti), de extratos e substâncias isoladas das espécies Coccoloba mollis Casaretto (1844) e T
Publicado em: 2007