INFLUENCE OF SO2 AND ASCORBIC-ACID ON THE SCAVENGER EFFECT OF TANNINS, MEASURED ON SUPEROXIDE ANION - APPLICATION TO RED WINES

Authors
VIVAS N DEGAULEJAC NS GLORIES Y
Citation
N. Vivas et al., INFLUENCE OF SO2 AND ASCORBIC-ACID ON THE SCAVENGER EFFECT OF TANNINS, MEASURED ON SUPEROXIDE ANION - APPLICATION TO RED WINES, Vitis, 36(2), 1997, pp. 91-96
Citations number
33
Categorie Soggetti
Agriculture
Journal title
Vitis → ACNP
ISSN journal
00427500
Volume
36
Issue
2
Year of publication
1997
Pages
91 - 96
Database
ISI
SICI code
0042-7500(1997)36:2<91:IOSAAO>2.0.ZU;2-T
Abstract
At usual oenological concentrations SO2 does not have a scavenger effe ct on superoxide anion. Ascorbic acid is an antiradical the effect of which varies with concentration. Different tannins, e.g. castalagin, p entagalloylglucose, procyanidins B2 and B4, (+)-catechin and garlic ac id, are shown to have significant antiradical effects. In red wines in particular procyanidins have a scavenger effect on free superoxide ra dicals.