Analysis of oil content and fatty acid GC/MS in Idesia polycarpa seeds from different provenances

In order to provide a basis for development and utilization of Idesia polycarpa,taking the seeds from six provenances as materials,oil were extracted by the Soxhlet extractior.Oil content in seed,fatty acid composition and relative content were determined and analyzed.Methyl esterification of obtained oil were analyzed by gas chromatography-mass spectrometry(GC/MS).The results showed that oil content difference between different kinds was great,ranging from 11.34% to 26.54%.Henan provenance seed oil content was the highest(26.54%),followed by Sichuan provenance(23.22%) and Hunan provenance(22.61%),Jiangsu provenance(18.05%),Jiangxi provenance(14.74%),Guizhou provenance(11.34%).Ten kinds of different fatty acids were detected,including myristic acid,pentadecanoic acid,palmitoleic acid,palmitic acid,heptadecanoic acid,linoleic acid,oleic acid,stearic acid,12-OH oleic acid,arachidic acid,and the content of linoleic acid up to 73.936 %～84.603 %,was the highest.