南果梨果实各部位脂肪酸组成GC_MS分析_张博 . Analysis of Fatty Acids in Different Parts from Nanguoli Pear Fruits by GC-MS

Abstract

Fatty acids in different parts of Nanguoli pear fruits including seed,peel and flesh were extracted by using Soxhlet extraction method,and then analyzed by gas chromatography-mass spectrometry (GC-MS). Results indicated that there were 14 fatty acids in seeds of Nanguoli pear. The major components were decanoic acid (0.05%),palm oil (0.29%),isopalmitic acid (0.38%),palmitic acid (9.08%),14-methyheptadecanoic acid (0.12%),linoleic acid (55.64%),oleic acid (27.18%),stearic acid (2.23%),arachidonic acid (0.77%),arachic acid (1.85%),heneicosamoic acid (0.19%),n-docosanoic acid (0.38%),tricosanoic acid (0.06%) and wood tar oil (0.15%). These 14 compounds were account for 98.37%. There were 4 fatty acids in peel of Nanguoli pear,which were palmitic acid (6.79%),linoleic acid (9.65%),oleic acid (33.73%) and stearic acid (1.51%). These 4 compounds were account for 51.68%. There were 3 fatty acids in flesh of Nanguoli pear,which were palmitic acid (4.59%),linoleic acid (22.81%) and oleic acid (15.87%). These 3 compounds were account for 43.27%. Linoleic acid and oleic acid were the major components of unsaturated fatty acids.