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You searched for: Subject term Vitis vinifera Remove constraint Subject term: Vitis vinifera Subject term electron paramagnetic resonance spectroscopy Remove constraint Subject term: electron paramagnetic resonance spectroscopy Subject term grapes Remove constraint Subject term: grapes
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1. Stilbene profiles in different tissues of Vitis vinifera L. cv. Cabernet Sauvignon and a comparison of their antioxidant activity

Author:
Y.‐J. Wei; S.‐R. Zhao; J.‐M. Li; B. Xue
Source:
Australian journal of grape and wine research 2016 v.22 no.2 pp. 226-231
ISSN:
1322-7130
Subject:
Vitis vinifera; antioxidant activity; electron paramagnetic resonance spectroscopy; grapes; health promotion; hydroxyl radicals; leaves; models; nitric oxide; roots; seeds; stems; stilbenes; tissues; viniferins
Abstract:
... BACKGROUND AND AIMS: Stilbenes are an important group of phenolic substances that exist in roots, stems, leaves, skins and seeds. But little work has been performed to characterise the composition of grape root or to measure the antioxidant capacity of several stilbenes with hydroxyl radicals,1,1‐diphenyl‐2‐picrylhydrazyl and nitric oxide free radicals. METHODS AND RESULTS: Stilbenes were analysed ...
DOI:
10.1111/ajgw.12230

2. Oxygen radical scavenging capacity of phenolic and non-phenolic compounds in red and white wines

Author:
Roberto Scalzo; Massimo Morassut; Paolo Rapisarda
Source:
Open life sciences 2011 v.7 no.1 pp. 146-158
ISSN:
2391-5412
Subject:
Vitis vinifera; acids; electron paramagnetic resonance spectroscopy; free radical scavengers; fructose; glucose; grapes; oxygen; pH; polyphenols; red wines; superoxide anion; temperature; white wines
Abstract:
... The aim of the present study was the evaluation of the antioxidant content in phenolic and non-phenolic extracts of ten wine samples, trying to elucidate the potential role of unusual antioxidant compounds. Samples of wines processed from red and white grapes (Vitis vinifera L.), deprived of the volatile fraction at low temperature and buffered at physiological pH, were fractionated by C18 into tw ...
DOI:
10.2478/s11535-011-0095-8