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@article{819709,
author = {Balík, Josef and Kyseláková, Marie and Vrchotová, Naděžda and Tříska, Jan and Kumšta, Michal and Veverka, Jaromír and Híc, Pavel and Totušek, Jiří and Lefnerová, Danuše},
article_number = {Spec. Iss.},
keywords = {vine grapes; vine leaves; stems; downy mildew; powdery mildew; grey mould; piceid; resveratrol; caftaric acid; catechin; epicatechin; photochemiluminiscence; DPPH; FRAP},
language = {eng},
issn = {1212-1800},
journal = {CZECH JOURNAL OF FOOD SCIENCES},
note = {National Conference on Quality of Moravian and Czech Wines and their Future},
title = {Relations between polyphenols content and antioxidant activity in the vine grapes and leaves},
volume = {26},
year = {2008}
}
TY - JOUR
ID - 819709
AU - Balík, Josef - Kyseláková, Marie - Vrchotová, Naděžda - Tříska, Jan - Kumšta, Michal - Veverka, Jaromír - Híc, Pavel - Totušek, Jiří - Lefnerová, Danuše
PY - 2008
TI - Relations between polyphenols content and antioxidant activity in the vine grapes and leaves
JF - CZECH JOURNAL OF FOOD SCIENCES
VL - 26
IS - Spec. Iss.
SP - "S25"-"S32"
EP - "S25"-"S32"
SN - 12121800
N1 - National Conference on Quality of Moravian and Czech Wines and their Future
KW - vine grapes
KW - vine leaves
KW - stems
KW - downy mildew
KW - powdery mildew
KW - grey mould
KW - piceid
KW - resveratrol
KW - caftaric acid
KW - catechin
KW - epicatechin
KW - photochemiluminiscence
KW - DPPH
KW - FRAP
N2 - The occurrence and content of some polyphenols and the antioxidant activity of compounds present in grape berries, stems and leaves of Vitis vinifera L. were evaluated. Three white and three blue varieties of grapevine were investigated. The contents were determined of trans-resveratrol, trans-piceid, caftaric acid, tryptophan, catechin, epicatechin, total polyphenols, and flavanols, both in healthy material and in the samples of the plant material infested with microorganisms (Botryotinia fuckeliana Whetzel anamorph Botrytis cinerea Pers.; Uncinula necator (Schw.) Burr; Plasmopara viticola (Berk. & M.A. Curtis) Berl & De Toni). The antioxidant activity of the extracts obtained was determined by different methods: FRAP (Ferric Reducing Antioxidant Power), DPPH (2,2-diphenyl-1-picrylhydrazyl radical) and TAC-PCL (Total Antioxidant Capacity of Photochemiluminescence). The content of trans-resveratrol varied between 0.3-2.3 mg/kg and 0.7-12.1 mg/kg in non-infested and infested grape berries, respectively. The content of trans-piceid between 0.6-2.9 mg/kg and 1.5-6.3 mg/kg in non-infested and infested grape berries, respectively. The content of trans-resveratrol varied between 2.5-10.3 mg/kg and 3.7-20.9 mg/kg in healthy and in infected leaves, respectively. The content trans-piceid varied between 11.3-58.4 mg/kg and 18.5-60.9 mg/kg in the healthy and in the infected leaves, respectively. The highest content of trans-resveratrol was found in stems (16.3-276.3 mg/kg). In young lateral shoots, the highest levels of trans-piceid (12.6-99.7 mg/kg) and caftaric acid (474-2257 mg/kg) were determined. The infested grape berries showed a higher antioxidant activity, which was most closely correlated with the content of total polyphenols (correlation coefficient = 0.8336-0.9952).
ER -
BALÍK, Josef, Marie KYSELÁKOVÁ, Naděžda VRCHOTOVÁ, Jan TŘÍSKA, Michal KUMŠTA, Jaromír VEVERKA, Pavel HÍC, Jiří TOTUŠEK and Danuše LEFNEROVÁ. Relations between polyphenols content and antioxidant activity in the vine grapes and leaves. \textit{CZECH JOURNAL OF FOOD SCIENCES}. 2008, vol.~26, Spec. Iss., p.~''S25''-''S32'', 8 pp. ISSN~1212-1800.
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