Total Lipids and Neutral Lipids in Fruits of Persimmon

Studies on Lipid in Persimmon Part III

Abstract

Chemical properties of total lipids and neutral lipids in flesh and skin of immature (picked on June) and mature (picked on November) fruits of persimmon, Disopyros kaki L. (3 varieties of Fuyu, Zenjimaru and Koshuhyakume) were studied by means of column, thin-layer and gas-liquid chromatography. The total lipid contents in the above two parts of immature and mature fruits were 0.08-0.23%, and the neutral lipid contents in the total lipids were 73.5-88.6%. Fatty acid compositions of the total lipids were studied by gas-liquid chromatography, and 13-16 kinds of fatty acids were identified. Main fatty acids in the total lipids were linolenic (20.2-31.1%), oleic (20.4-28.2%), palmitic (16.8-23.6%) and palmitoleic acids (12.1-18.3%). Main components of the neutral lipids in flesh of immature and mature fruits were triacylglycerines (23.2-33.3%), 1, 2-diacylglycerines (13.8-24.2%) and sterols (12.0-20, 9%). On the other hand, sterols (9.5-12.1%) were detected as main components of the neutral lipids in skin of immature and mature fruits, but many unknown components were also observed.