Total Lipids and Neutral Lipids in Seeds of Persimmon

Studies on Lipid in Persimmon Part I

Abstract

(1) Chemical properties of total and neutral lipids in seeds of persimmon, Diospyros kaki ("Fuyu", "Zenjimaru" and "Koshuhyakume") were studied by means of thin-layer and gasliquid chromatography. (2) Total lipid contents in seeds of three varieties of persimmon were 0.43-0.67% and neutral lipids were 81.7-88.6% of the total lipids. Lipid compositions of the above three neutral lipids were resemble and consisted of triacylglycerides (23.0-33.7%), 1, 3-diacylglycerides (3.4-10.7%), 1, 2-diacylglycerides (8.2-11.8%), sterolesters (16.0-17.5%), hydrocarbons (4.2-7.6%), free fatty acids (1.8-2.8%), fatty alcohols (1.8-3.8%), sterols (3.8-13.7%) and unknown materials (17.2-22.0%). Main components in neutral lipids were triacylglycerides, unknown materials, sterolesters and 1, 2-diacylglycerides. (3) Fatty acid compositions of total lipids, triacylglycerides, 1, 3-diacylglycerides, 1, 2-diacylglycerides, sterolester and free fatty acids were studied by gas-liquid chromatography, and 11-16 kinds of fatty acids were identified. Main fatty acids in these lipids were oleic (21.7-50.4%), linolic (11.2-47.4%) and palmitic acids (13.0-37.9%).