Study of phospholipid composition of Rosaceae seed oils

Abstract

Phospholipid composition of three rosaceous seed oils (from apples, pears and quinces) was studied by two-directional thin layer chromatography. Phospholipid content in apple oil was 0.8%, in pear oil 0.9% and 0.7% in quince oil. Phosphatidylcholine, phosphatidylinositol and phosphatidylethanolamine were identified as major components in the following quantities: phosphatidylcholine 30.8, 30.1, 30.5%, respectively; phosphatidylinositol 28.4, 29.3, 28.7%; phosphatidylethanolamine 16.0, 13.8, 6.0%. Phosphatidic acid quantities were respectively 10.7, 5.5 and 6.7%. Fatty acid composition of glyceride oils and 4 major phospholipids were determined by capillary gas chromatography. Larger quantities of saturated fatty acids (mainly palmitic and stearic acids) were identified in the phospholipids.