Abstract In order to evaluate the effect of application chitosan red wines with different initial composition, four showing tannins/anthocyanins ratio ( T / A ) ranging from 0.15 2.44 were treated this amino polysaccharide. As one main factors involved in wine ageing is oxidation, even a forced oxidation test was applied on all samples. The addition determined decrease total phenolic compounds ...

The present study was designed to identify and quantify the major phenolic compounds in different Juglans regia L. (common walnut) tissues (leaves, petioles, bark, roots, buds), define compositions contents of between these tissues. A total 91 individual were identified quantified, which comprised 8 hydroxycinnamic acids, 28 hydroxybenzoic 11 flavanols, 20 flavonols, 22 napthoquinones, 2 coumar...

Flavanols from tea have been reported to accumulate in the cell nucleus in considerable concentrations. The nature of this phenomenon, which could provide novel approaches in understanding the well-known beneficial health effects of tea phenols, is investigated in this contribution. The interaction between epigallocatechin gallate (EGCG) from green tea and a selection of theaflavins from black ...

Stenotrophomonas maltophilia is an important nosocomial pathogen with intrinsic resistance to multiple antibiotics. Previous investigations have shown flavanols from black tea to possess antibacterial activity. This study describes the determination of minimum inhibitory concentrations and minimum bactericidal concentration for theaflavin independently and in formulations with the polyphenols e...

Thirty-seven China wines, produced from different geographical origins, were examined in this study. The antioxidant activity of wines was measured by different analytical methods: oxygen radical absorbance capacity (ORAC), reducing power, 2,2-azino-di-(3-ethylbenzothialozine-sulphonic acid) (ABTS), 2,2diphenyl-1-picrylhydrazyl (DPPH ), hydroxyl radical-scavenger activity, superoxide radical-sc...

An analytical method for the quantitative determination of the principal phenolic compounds (benzoic acids, hydroxycinnamic acids, 3-phenylpropionic acids, flavanols, procyanidins, dihydrochalcones, quercetin glycosides) in ciders, which successfully employs a RP-HPLC and photodiode-array detection system without prior treatment of the sample, is described. Parameters usually examined in the me...

Foliar application has been studied to enhance grape composition and, therefore, wine quality. This work examined, for first time, the effects of foliar applications methyl jasmonate (MeJ) and plus urea (MeJ+Ur) Tempranillo vineyard on phenolic, aromatic nitrogen over two vintages (2019 2020). A reduction in alcoholic degree was observed MeJ MeJ+Ur wines. The effect treatments season-dependent....

Abstract Exercise-induced muscle damage (EIMD) is associated with oxidative stress and inflammation, soreness, reductions in function. Cocoa flavanols (CF) are (poly)phenols antioxidant anti-inflammatory effects thus may attenuate symptoms of EIMD. The purpose this narrative review was to collate evaluate the current literature investigating effect CF supplementation on markers exercise-induced...

Purified extracts from different types of berries and medicinal plants are increasingly used as raw materials for the production nutraceuticals dietary supplements, mainly due to their high content in bioactive substances. This is, instance, case phenolic compounds such flavonoids, which exhibit a wide range beneficial properties, including antioxidant, anti-inflammatory, antineoplastic antimic...