Study on Fatty Acid Composition and Variation Analysis of Tung Oils in China by GC/MS

To study the fatty acid composition and analysis the variation among the samples of tung oil collected from Guangxi，Chongqing, Hunan, Hubei and Guizhou Provinces of China．Gas chromatography-mass spectrometry(GC-MS) were employed to determine the fatty acid composition of tung oil．The results show that the main composition of the tung oil in China are n-hexadecanoic acid, linoleic acid, oleic acid, stearic acid, α-octadecatrienoic acid, β-octadecatrienoic acid. Tung oil contains octadecatrienoic acid 72.56～88.59% and polyunsaturated fatty acids 80.26~92.39%. The content of octadecatrienoic acid and polyunsaturated fatty acids in tung oil are different between different regions and different varieties.