Quality analysis of Phyllanthus emblic L.seed oil extracted by different solvents

The purpose of this study was to explore the influence of different solvents on quality of Phyllanthus emblica L.seed oil,and provide the theory basis for further development.Phyllanthus emblica L.seed oil was extracted by 8 kinds of solvents,the quality of them were compared,at the same time mechanical crushing method was to be referenced. The results showed that Phyllanthus emblica L.seed oil extraction rate was 4.71% by mechanical crushing method while solvent extraction rate was more than 14%,solvent extraction was more suitable compared with mechanical crushing method.Fatty compositions were detected by gas chromatography- mass spectrometry,α- linolenic acid,linoleic acid,oleic acid,palmitic acid and stearic acid were the main components in Phyllanthus emblica L. seed oil,the relative contents of these five kinds of fatty acids were above 98%.α- linolenic acid and linoleic acid were polyunsaturated fatty acids in the oil,the relative content of them were more than 60%,while α- linolenic acid was more than 44%.It was found that the quality of oil extracted by long chain and small- polar solvents was better than others we selected.N- hexane was a kind of ideal solvent,the oil extracted by n- hexane was better than other solvents in extraction rate,lovibond colour,transparency and P / S,furthermore,trace amount of campesterol was detected in it.