caftaric acid/vinič hroznorodý

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Effect of maceration duration on physicochemical characteristics, organic acid, phenolic compounds and antioxidant activity of red wine from Vitis vinifera L. Karaoglan.

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Effects of different maceration times (5, 10 and 15 days) on composition, phenolic compounds and antioxidant activities of red wines made from the Vitis vinifera L. Karaoglan grown in Malatya were investigated. Maceration duration changed some chemical constituents and color of Karaoglan red wines.

Deployment of response surface methodology to optimise recovery of grape (Vitis vinifera) stem polyphenols.

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A 2(3)-full factorial design and response surface methodology were deployed to assess some basic factors (time, % ethanol and pH) affecting profoundly the extractability of polyphenolic phytochemicals from grape (Vitis vinifera) stems. In an effort to obtain a thorough insight into the applicability

NMR-based phytochemical analysis of Vitis vinifera cv Falanghina leaves. Characterization of a previously undescribed biflavonoid with antiproliferative activity.

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Vitis vinifera cv Falanghina is an ancient grape variety of Southern Italy. A thorough phytochemical analysis of the Falanghina leaves was conducted to investigate its specialised metabolite content. Along with already known molecules, such as caftaric acid, quercetin-3-O-β-d-glucopyranoside,

Investigations on anthocyanins in wines from Vitis vinifera cv. pinotage: factors influencing the formation of pinotin A and its correlation with wine age.

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Pinotage red wines were found to contain a reaction product of malvidin 3-glucoside and caffeic acid, the so-called pinotin A. A total of 50 Pinotage wines from the vintages 1996-2002 were analyzed for the content of pinotin A, malvidin 3-glucoside, caffeic acid, and caftaric acid. Statistical

Phenolic and volatile composition of wines made from Vitis vinifera cv. Muscat lefko grapes from the island of Samos.

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A study of the phenolic and volatile composition of wines produced from the white cultivar Muscat lefko from the island of Samos was conducted. Dry, fortified, naturally sweet wines and mistelles (aged and nonaged) have been studied. The phenolic components (flavan-3-ols, hydroxycinnamates, and

Effects of defoliation on quality attributes of Nero di Troia (Vitis vinifera L.) grape and wine.

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Field studies were conducted in Puglia (Italy) to evaluate the influence of defoliation around cluster zones on grape and wine quality. Nero di Troia grapes were subjected to four different treatments: N: no leaf removal; E: leaf removal in the area of the clusters along the east side (at complete

Red-color related phenolic composition of Garnacha Tintorera (Vitis vinifera L.) grapes and red wines.

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Garnacha Tintorera (also known as Alicante Bouschet) is one of the few V. vinifera grape cultivars with red-colored berry flesh. The study of the phenolic composition of both berry flesh and skin of Garnacha Tintorera grapes shows interesting findings. Anthocyanins were asymmetrically distributed

A Reference List of Phenolic Compounds (Including Stilbenes) in Grapevine (Vitis vinifera L.) Roots, Woods, Canes, Stems, and Leaves.

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Due to their biological activities, both in plants and in humans, there is a great interest in finding natural sources of phenolic compounds or ways to artificially manipulate their levels. During the last decade, a significant amount of these compounds has been reported in the vegetative organs of

Comprehensive polyphenolic profiling in promising resistant grapevine hybrids including seventeen novel breeds in Northern Italy

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Background: A promising way to overcome the susceptibility of Vitis vinifera L. against fungal diseases is the integration of genetic resistance by the interspecific crossing between V. vinifera varieties and resistant species. However,

Grapevine rootstock effects on scion sap phenolic levels, resistance to Xylella fastidiosa infection, and progression of Pierce's disease.

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The xylem-limited bacterium Xylella fastidiosa (Xf) causes Pierce's disease (PD), an important disease of grapevine, Vitis vinifera L. Grapevine rootstocks were developed to provide increased resistance to root disease, but rootstock effects on cane and vine diseases remain unclear. Grapevines that

Grapevine Green Pruning Residues as a Promising and Sustainable Source of Bioactive Phenolic Compounds.

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Green pruning residues (GPRs) and leaves from 16 red and white Vitis vinifera L. cultivars from Piedmont (Italy) were studied. The investigated samples were extracted by ultrasound-assisted extraction optimized by an experimental design, and quali- and quantitatively analyzed by

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