文章基本信息

标题：Vitamin E Profiles and Triacylglycerol Molecular Species of Colored Rice Bran Cultivars at Different Degree of Milling
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作者：Hiromi Yoshida ; Mika Kanamori ; Naoko Yoshida 等
期刊名称：Journal of Food Research
印刷版ISSN：1927-0887
电子版ISSN：1927-0895
出版年度：2013
卷号：2
期号：6
页码：106
DOI：10.5539/jfr.v2n6p106
出版社：Canadian Center of Science and Education
摘要：The objective of this study was to evalute the tocochromanol distributions, lipid components and molecular species of triacylglycerols (TAG) in three colored rice bran cultivars. The dominant tocochromanol were gama-tocotrienol, alpha-tocopherol and alpha-tocotrienol with smaller amounts of gama-tocopherol, delta-tocopherol and delta-tocotrienol. These lipids comprised mainly TAG (78.0-81.6 wt%), free fatty acids (FFA: 5.6-8.8 wt%), and phospholipids (PL: 6.3-7.0 wt%), while other components were present in minor proportions (0.4-2.3 wt%). Sixteen different TAG molecular species were detected and quantified by successive applications of AgNO₃-TLC and GC. The major TAG molecular species were SM₂(6.1-9.8%), S₂D (4.8-7.3%)?M₃ (16.4-18.7%), SMD (6.2-9.2%), SD₂ (6.5-9.5%), SMT (6.3-7.7%), M₂D (12.3-15.5%.), MD₂ (8.4-10.4%), SDT (4.3-5.4%) and D₃ (10.2-15.2%) (where S, M, D, and T denote saturated FA, monoene, diene, and triene, respectively). The results showed that colored rice bran lipids contain large amounts of nutraceutical with proven positive health effects.