Analysis of fatty acids composition and content in soybean varieties in Hebei province

In order to provide scientific basis for evaluation and utilization of soybean germplasm,the fatty acid composition of 41 soybean varieties authorized in Hebei province in the last 30 years was analyzed by means of capillary gas chromatography.The correlation analysis between fatty acids was made as well.Results showed that content of fatty acid from high to low was linoleic acid,oleic acid,hexadecylic acid,linolenic acid and stearic acid.Variety 'Kaiyu 9' contained the most linoleic acid(56.89%) and variety 'Jichengdou 3' contained the most linolenic acid(9.06%) among all varieties.The content of fatty acid between different varieties varied significantly.Oleic acid had the biggest variation coefficient(31%) and the stearic acid had the smallest variation coefficient(4.64%).By correlation analysis,linoleic acid was positively correlated with linolenic acid and both of them were negatively correlated with oleic acid.