THRESHOLD EFFECT OF CAFFEIC ACID ON PEROXIDASE-CATALYZED OXIDATION OFINDOLE-3-ACETIC-ACID

Authors
KRYLOV SN KRYLOVA SM RUBIN LB
Citation
Sn. Krylov et al., THRESHOLD EFFECT OF CAFFEIC ACID ON PEROXIDASE-CATALYZED OXIDATION OFINDOLE-3-ACETIC-ACID, Phytochemistry, 33(1), 1993, pp. 9-12
Citations number
12
Categorie Soggetti
Plant Sciences
Journal title
Phytochemistry → ACNP
ISSN journal
00319422
Volume
33
Issue
1
Year of publication
1993
Pages
9 - 12
Database
ISI
SICI code
0031-9422(1993)33:1<9:TEOCAO>2.0.ZU;2-Z
Abstract
The hitherto unknown threshold effect for the inhibition of the peroxi dase-catalysed aerobic oxidation of indole-3-acetic acid (IAA) by caff eic acid is described. It is shown that caffeic acid does not affect p eroxidase and IAA. To explain the threshold effect it is supposed that for the given experimental conditions, the oxidation of IAA is an enz ymatic, free radical, chain branched reaction and caffeic acid acts as a trap of free radicals participating in the chain reaction.