气相色谱_质谱法分析棕榈果脂肪酸组成_沈丹玉 . Analysis of Fatty Acid Composition in Oil Palm Fruit by Chromatography-Mass Spectrometry

Abstract

Palm oil and palm kernel oil were extracted by a soxhlet extractor,and esterfied with potassium hydroxide-methanol.The fatty acid compositions were determined by gas chromatography-mass spectrometry.Nine fatty acids were identified and quantified respectively.The relative content of saturated fatty acids from palm oil was 49.5 %,and existing forms were mainly palmitic acid and stearic acid.The unsaturated fatty acids were constituted of oleic acid,linoleic acid,linolenic acid and cis-13,16-docosadienoic acid.The relative content of saturated fatty acids from palm kernel oil was more than 80,and lauric acid had the highest content obtained with content of 41.5% among them.The other main compositions were myristic acid,palmitic acid,hexanoic acid,octanoic acid,capric acid and stearic acid.Oleic acid and linoleic acid constituted the unsaturated fatty acids.