IDENTIFICATION BY EPR SPECTROSCOPY OF CARVACROL AND THYMOL AS THE MAJOR SOURCES OF FREE-RADICALS IN THE OXIDATION OF PLANT ESSENTIAL OILS

Authors
DEIGHTON N GLIDEWELL SM DEANS SG GOODMAN BA
Citation
N. Deighton et al., IDENTIFICATION BY EPR SPECTROSCOPY OF CARVACROL AND THYMOL AS THE MAJOR SOURCES OF FREE-RADICALS IN THE OXIDATION OF PLANT ESSENTIAL OILS, Journal of the Science of Food and Agriculture, 63(2), 1993, pp. 221-225
Citations number
12
Categorie Soggetti
Agriculture,"Food Science & Tenology
Journal title
Journal of the Science of Food and Agriculture → ACNP
ISSN journal
00225142
Volume
63
Issue
2
Year of publication
1993
Pages
221 - 225
Database
ISI
SICI code
0022-5142(1993)63:2<221:IBESOC>2.0.ZU;2-#
Abstract
The formation of stable free radicals upon reaction of the essential o ils of 10 plant species with ultraviolet radiation and the superoxide radical anion, O2-, has been investigated by electron paramagnetic res onance (EPR) spectroscopy. Only the oils from oregano, summer savory a nd thyme produced EPR spectra and the results can be accounted for in terms of free radicals produced by the closely related phenolics, carv acrol and thymol. These observations are interpreted in terms of the k nown antioxidant properties of these molecules.