Profiles of Lipid Components, Fatty Acids and Triacylglycerol Molecular Species in Lipids of Rice Bran Cultivars

• YOSHIDA Hiromi

  Department of Nutritional Science, Kobe Gakuin University Cooperative Research Center of Life Sciences, Kobe Gakuin University

• KURIYAMA Isoko

  Department of Nutritional Science, Kobe Gakuin University

• TOMIYAMA-SAKAMOTO Yuka

  Department of Nutritional Science, Kobe Gakuin University

• MIZUSHINA Yoshiyuki

  Department of Nutritional Science, Kobe Gakuin University Cooperative Research Center of Life Sciences, Kobe Gakuin University

抄録

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.

収録刊行物

• Food Science and Technology Research

  Food Science and Technology Research 18 (2), 219-226, 2012

  公益社団法人 日本食品科学工学会

キーワード

• fatty acids
• molecular species
• rice brans
• tocochromanols
• triacylglycerols

詳細情報

• CRID: 1390001204457317248
• NII論文ID: 10030917940
• NII書誌ID: AA11320122
• DOI: 10.3136/fstr.18.219
• COI: 1:CAS:528:DC%2BC38Xos1Orsrg%3D
• ISSN: 18813984
• ISSN: 13446606
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可