松籽油脂肪酸组成及分布特征分析 . Characteristics of positional fatty acid composition and distribution in Pinus koraiensis seed oil

Abstract

The total and positional fatty acid composition were analyzed by GC.Linoleic(46.29%),oleic(26.68%),and pinolenic acid(13.84%)were the major fatty acids in pine seed oil.More linoleic(66.84%)and oleic acid(28.33%)were detected at sn2 than that at sn1,3 positions,while the most Δ5-polyunsaturated fatty acids(Δ5-PUFA)were preferentially located at sn1,3 positions.The presence of Δ5-PUFA and their positional distribution were the characteristics of the seed oils of pinus plant.Pine seed oil was composed by various of triacylglycerols,and LLPi(24.13%),OLL/LOL(17.87%)and LOPi(14.32%)were the most abundant.Besides,141.64mg/100g of total phytosterol,and 23.63mg/100g of total tocopherols were also detected.