Profiles of Lipid Components, Fatty Acids and Triacylglycerol Molecular Species in Lipids of Rice Bran Cultivars
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概要
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Tocochromanols in the lipids extracted from five rice bran cultivars were analyzed by high-performance liquid chromatography. The molecular species and fatty acid (FA) distribution of triacylglycerols (TAG) isolated from the total lipids were investigated among five different cultivars by a combination of AgNO3 thin-layer chromatography and gas chromatography. The dominant tocols were γ-tocotrienol, α-tocopherol and α-tocotrienol with smaller amounts of δ-tocotrienol and γ-tocopherol. The lipids of the rice bran cultivars comprised mainly TAG (84.7 − 86.0%), free FA (4.2 − 4.6%), and phospholipids (6.5 − 6.7%), while other components were present in minor proportions (0.2 − 1.8%). Comparison of the different cultivars showed no substantial differences (P > 0.05) in their FA distributions among the same lipid subfraction. The major TAG molecular species were M3 (17.1 − 18.5%), SMD (7.6 − 8.2%), M2D (14.8 − 15.4%), MD2 (9.3 − 10.6%) and D3 (12.3 − 13.5%) (where S, M and D denote saturated FA, monoene and diene, respectively). The results showed that rice bran lipids contain large amounts of nutraceutical, which has proven positive health effects.
- 2012-03-01
著者
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Yoshimura Hidetoshi
Faculty Of Pharmaceutical Sciences Kyushu University(present):department Of Food And Nutrition Nakam
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Yoshida Hiromi
Department Of Analytical And Bioinorganic Chemistry Kyoto Pharmaceutical University
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Kuriyama Isoko
Lab. Of Food & Nutritional Sciences Dep. Of Nutritional Sci. Kobe-gakuin Univ.
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Yoshimura H
Faculty Of Pharmaceutical Sciences Kyushu University(present):department Of Food And Nutrition Nakam
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Mizushima Y
Laboratory Of Food And Nutritional Sciences Department Of Nutritional Science Kobe-gakuin University
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Mizushina Y
Kobe‐gakuin Univ. Kobe Jpn
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Mizushina Yoshiyuki
Department Of Nutritional Science Kobe Gakuin University
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Kuriyama Isoko
Department Of Nutritional Science Kobe Gakuin University
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TOMIYAMA SAKAMOTO
Department of Nutritional Science, Kobe Gakuin University
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Tomiyama Sakamoto
Department Of Nutritional Science Kobe Gakuin University
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吉村 英敏
Department of Nutritional Science, Kobe Gakuin University
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Mizushina Yoshiyuki
Department of Applied Biological Science, Science University of Tokyo
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