Abstract: The volatile oil and fat-soluble components of Gynura cusimbua were extracted by hydrodistillation and Soxhlet extraction,followed by the analysis using gas chromatography-mass spectrometry (GC-MS).47 and 20 kinds of volatile oil and fat-soluble components were detected and identified in the extracts of G.cusimbua. The volatile oil of G.cusimbua mainly contained ylangene (7.30%), δ-cadinene (6.85%),caryophyllene oxide (5.90%) and 1,5,9-trimethyl-12-(1-methylethyl)-4,8,13-Cyclotetradecatriene-1,3-diol (5.83%). The fat-soluble components of G.cusimbua mainly contained 8,11-octadecadienoic acid,methyl ester (16.09%), hexadecanoic acid,methyl ester (12.15%), eicosanoic acid,methyl ester (7.06%) and linolenic acid methyl ester (7.00%).

Key words: Gynura cusimbua, volatile oil, fat-soluble, GC-MS analysis