Study on the Fatty Acids from Galla Chinensis Related Resources by GC-MS

Objective To study the fatty acid composition of Galla Chinensis related resources(horned gall, gallnuts, gall flowers and Rhus chinensis Mill. fruit). Methods The Galla Chinensis oil was extracted by No.6 extracted solvent naphtha, then its fatty acid composition could be analyzed by GC-MS after methyl esterification. Results According the relative peak areas, the oil compositions in horned gall were lauric acid 1.75%, palmitic acid 24.36%, myristic acid 30.94%, stearic acid7.39%, linoleic acid 7.14%, oleic acid 14.4%; Compositions in gallnuts were lauric acid 29.95%,palmitic acid 17.36%, myristic acid 28.2%, stearic acid 5.01%, linoleic acid 7.48%, oleic acid7.02%; Compositions in gall flowers lauric acid 1.20%, palmitic acid 31.2%, myristic acid 33.77%,stearic acid 5.54%, linoleic acid 9.71%; Compositions in Rhus chinensis Mill. fruit were palmitic acid 19.9%, stearic acid 3.32%, linoleic acid 57.73%, oleic acid 13.41%. The first three species of Galla Chinensis oil mainly contain saturated fatty acid, while the oils from Mill. fruit mainly were unsaturated fatty acid. Conclusion The oils from Galla Chinensis related resources have a high development value. However, the different compositions of fatty acid should be paid attention when they are developed and utilize.