Lipid Class and Fatty Acid Composition of Starch-Lipid in Naked Barley

쌀보리의 전분지방질에 관한 연구

  • Kim, Hae-Gyoung (Dept. of Food Science and Nutrition, Pusan National University) ;
  • Cheigh, Hong-Sik (Dept. of Food Science and Nutrition, Pusan National University)
  • 김혜경 (부산대학교 식품영양학과) ;
  • 최홍식 (부산대학교 식품영양학과)
  • Published : 1989.08.01

Abstract

The composition of lipid class and fatty acid of free lipids(FL) as non-starch lipid and bound lipids(BL) as starch-lipid extracted from starch In naked barley(Hordeum vulgare L.) was investigated with the chromatographic procedures. FL were extracted from barley starch by petroleum ether(PE) and then BL were reextracted from PE extracted starch by the solvent systems of water-saturated butanol (WSB) at $25^{\circ}C$ and at $95^{\circ}C$ respectively. The contents of neutral lipid(NL), glycolipids(GL) and phospholipids(PL) in FL were 69.9%, 27.3%, and 2.8%, on the other hand those of BL were 34.9-54.6%, 30-45.5% and 15.4-19.6%, respectively. The identified components of NL in starch-lipid were triglycerides (70.4-82.4%), free fatty acid (8.4-26.2%), esterified sterols and free sterols, and also the major GL in starch-lipid was monogalactos-yldiglycerides(87.2-91.1%). Of the PL in FL and BL, diphosphatidyl glycerols, lysophosphatidyl choline, phosphatidyl choline & phosphatidyl serine were the major components. The predominent fatty acids found in NL, GL and PL of barley starch were palmitic acid and linoleic acid, and also myristic, stearic, oleic, linolenic acids were determined.

Keywords

lipid class;fatty acid;starch-lipid;naked barley