Antiradical activity and polyphenolic antioxidants in grapes (Vitis vinifera L.) in the Czech wine-growing area

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F05%3A10175" target="_blank" >RIV/60460709:41210/05:10175 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Antiradical activity and polyphenolic antioxidants in grapes (Vitis vinifera L.) in the Czech wine-growing area

Original language description

Contents of polyphenolic antioxidants as total polyphenols (TP), free trans-resveratrol (R) and their antiradical activity (ARA) in grape musts, grape skins and seeds of vine varieties originated from 5 wine-growing Czech areas from the harvest 2003 weredetermined. Polyphenolic antioxidants of grape are very effective in preventing cancer and cardiovascular diseases. TP content was determined spectrophotometrically with phenol Folin-Ciocalteau´s reagent, R content by HPLC method, and ARA employing the1,1-diphenyl-2-picrylhydrazyl stable free radical (DPPH×). Obtained results were evaluated statistically by Statgraphic and Anova programmes. TP showed statistically significant differences among analysed varieties (p < 0.05) and wine-growing areas (p <0.05). The highest TP contents were found in grape seeds (536.6 mg/g DM), whereas R contents were higher in the skins (av. 166.818.10-5 mg/g DM). Blue vine varieties have 1.89 times higher TP content in grape skins and 1.35 times higher i

Czech name

Antiradikálová aktivita a polyfenolické antioxidanty v hroznech (Vitis vinifera L.) v českém vinařském regionu

Czech description

Contents of polyphenolic antioxidants as total polyphenols (TP), free trans-resveratrol (R) and their antiradical activity (ARA) in grape musts, grape skins and seeds of vine varieties originated from 5 wine-growing Czech areas from the harvest 2003 weredetermined. Polyphenolic antioxidants of grape are very effective in preventing cancer and cardiovascular diseases. TP content was determined spectrophotometrically with phenol Folin-Ciocalteau´s reagent, R content by HPLC method, and ARA employing the1,1-diphenyl-2-picrylhydrazyl stable free radical (DPPH×). Obtained results were evaluated statistically by Statgraphic and Anova programmes. TP showed statistically significant differences among analysed varieties (p < 0.05) and wine-growing areas (p <0.05). The highest TP contents were found in grape seeds (536.6 mg/g DM), whereas R contents were higher in the skins (av. 166.818.10-5 mg/g DM). Blue vine varieties have 1.89 times higher TP content in grape skins and 1.35 times higher i

Type

D - Article in proceedings

CEP classification

GM - Food industry

OECD FORD branch

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Project

<a href="/en/project/GA525%2F02%2F0301" target="_blank" >GA525/02/0301: Response of plants to abiotic stress by selected heavy metals</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Vitamins 2005 Targeted Nutritional Therapy. The Abstract Book.

ISBN

80-7194-748-2

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

72-75

Publisher name

Univerzita Pardubice

Place of publication

Pardubice

Event location

Pardubice

Event date

Sep 14, 2005

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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