Reaction products of α-tocopherol with methyl linoleate-peroxyl radicals |
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Authors: | Ryo Yamauchi Tomoatsu Matsui Koji Kato Yoshimitsu Ueno |
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Affiliation: | (1) Department of Food Science, Faculty of Agriculture, Gifu University, 1-1 Yanagido, 501-11 Gifu City, Gifu, Japan |
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Abstract: | α-Tocopherol was reacted with methyl linoleateperoxyl radicals at 37°C. The peroxyl radicals were generated by the reaction of methyl linoleate with a free radical initiator, 2,2′-azobis(2,4-dimethylvaleronitrile). The primary products of α-tocopherol with methyl linoleate-peroxyl radicals were isolated by reversephase and normal-phase high performance liquid chromatography (HPLC), and their structures were characterized by ultraviolet (UV), infrared (IR),1H and13C nuclear magnetic resonance (NMR) and mass spectrometry (MS). There were four stereoisomers of methyl 13-(8a-peroxy-α-tocopherone)-9(Z),11(E)-octadecadienoate and four stereoisomers of methyl9-(8a-peroxy-α-tocopherone)-10(E),12(Z)-octadecadienoate. |
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