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E. A. Mengele, C. Ferreri, C. Chatgilialoglu, O. T. Kasaikina,
Effect
of oxygen and antioxidants on
the cis-/trans-
isomerization of unsaturated fatty acid caused by thiyl radicals
Abstract
The interaction of unsaturated compounds methyllinoleate and b-carotene with thiyl
radicals derived in exchange radical reactions with mercaptoethanol. b-Carotene was shown to
be an effective thiyl radical acceptor. In the case of methyllinoleate, thiyl
radicals catalyze cis/trans isomerization, which can be reduced by the
natural antioxidant a-tocopherol; the cis/trans isomerization rate
decreases in oxygen atmosphere.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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