Effects of oxygen and antioxidants on the <Emphasis Type="Italic">cis-trans</Emphasis>-isomerization of unsaturated fatty acids caused by thiyl radicals |
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| Authors: | E A Mengele C Ferreri C Chatgilialoglu O T Kasaikina |
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| Institution: | 1.Institute of Chemical Physics,Russian Academy of Sciences,Moscow,Russia;2.Institute of Organic Synthesis and Photochemistry,Bologna,Italy;3.Division of Colloidal Chemistry, Chemistry Department,Moscow State University,Moscow,Russia |
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| Abstract: | The interaction of unsaturated compounds methyllinoleate and β-carotene with thiyl radicals occurred in exchange radical reactions
with mercaptoethanol. β-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 α-tocopherol; the cis/trans isomerization rate decreases in an oxygen atmosphere. |
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