Lipid and Fatty Acid Composition of Total Lipids in Seeds of Bayberries

Abstract

Lipid and fatty acid composition of total lipids in seeds and endocarps of bayberries (Myrica rubra SIEB. et ZUCC.) were studied by means of silicic acid column chromatography, thin-layer chromatography and gas-liquid chromatography. Three cultivars of barberry used as oil material were 'Moriguchi', 'Tateishi' and 'Kohgyoku'. The results obtained were as follows. (1) Total lipid content were 46.2-50.1% (50.5-54.7% in dry matter) in seeds and 0.4-0.8% (0.5-0.9% in dry matter) in endocarps. (2) Neutral lipid content in total lipids were 96.5-97.1% in seeds and 66.2-70.3% in endocarps. While, glycolipid and phospholipid content in total lipids were 2.5-2.6%, 0.3-0.9% in seeds and 22.4-24.5%, 6.6-9.3% in endocarps, respectively. (3) In both seeds and endocarps, the main lipid in neutral lipid was triacylglycerol (TG, 92.9-95.5% in seeds, 73.9-77.4% in endocarps). (4) The main lipid in glycolipid in both parts were acylsterylglucoside, monogalactosyldiacylglycerol, while the main lipid in phospholipid were phosphatidylcholine and phosphatidylserine. (5) The main fatty acid in the four lipid fractions (TL, NL, GL and PL) were 18:2, 18:1 and 16:0 acids in seeds and endocarps. However, there was a little difference between two parts and among four lipid fractions.