Polyunsaturated fatty acids (PUFAs) plays important roles as some structural components of membrane lipids、maintain normal metabolism and the signal conduction in eukaryotic cells. Theγ-linolenic acid is one kind of essential unsaturated fatty acid , Long-chain polyunsaturated fatty acids (LCPUFAs) could be synthesized from GLA in body, these LCPUFAs is the important precursor of prostaglandin、prostacyclin and leukotriene and so on which have the intense biological activity .The research confi...