한국식품영양과학회지 (Journal of the Korean Society of Food Science and Nutrition)
- 제19권3호
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- Pages.239-247
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- 1990
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- 1226-3311(pISSN)
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- 2288-5978(eISSN)
Methyl Linoleate의 자동산화에 따른 $\alpha$ -Tocopherol과 ${\gamma}$ -Tocopherol 혼합계의 산화생성물
Oxidation Products from the Mixture of $\alpha$ -Tocopherol and ${\gamma}$ -Tocopherol during Autoxidation of Methly Linoleate
초록
The oxidation products from the mixture of a-tocopherol (a-Toc) and γ-tocopherol)(γ-Toc) during autoxidation of methyl linoleate were isolated and identified. The sturctures of the oxida-tion products were characterized by UV, IR, 1H and 13CNMR and mass spectrometry 5-[2-(a-tocopherol-5'-yl)ethyl]-a-tocopherylquinone 5-[2-(a-tocopherol-5'-yl)ethyl]-8a-hydroxy-a-tocopherone and O-[8-(5-ethoxymethyl-7-methyltocol) methyl] a-tocopherol were obained from the mixture as the oxidation products derived from γ-Toc However oxidation product composed of both a-ToC and γ-Toc was detected in oxidation products of the misture. These results support the facts that at first oxidation of a-Toc proceeds during autoxidation of lipids and then γ-Toc decomposes after approximate consumption of a-Toc.
키워드