Cereal Chem 55:138 - 145.  |  VIEW ARTICLE
Molecular Species of Triglyceride in Rice Bran.

T. Miyazawa, H. Tazawa, and Y. Fujino. Copyright 1978 by the American Association of Cereal Chemists, Inc. 

Triglyceride was isolated from rice bran, and the fatty acid composition and molecular species were analyzed with gas-liquid chromatography and gas chromatography/mass spectrometry. Neutral lipid and polar lipid were present in the ratio 90.6:9.4. The main component fatty acids were, in decreasing order, linoleic, oleic and palmitic acid. Among the fatty acid components, linoleic acid was rich in the C-2 position of the glycerol radical, palmitic acid exclusively in C-1 and C-3, and oleic acid equally distributed in C-1, C-2, and C-3. When the molecular species of triglyceride was expressed in terms of combination of fatty acids (carbon number:double bond number)1 in C-1, C-2, and C-3 positions, the major types of triglyceride in rice bran included 16:0-18:2-18:1 and/or 18:1-18:2-16:0, 16:0-18:2-18:2 and/or 18:2-18:2-16:0, and 18:1-18:1-18:1.