白果油的提取及脂肪酸组成分析_邓乾春 . Extraction and fatty acid composition of Ginkgo oil

Abstract

Oil was extracted from Ginkgo biloba L.seeds by Soxhlet extractor and supercritical CO2 extraction.Physicochemical characters of Ginkgo oil extracted by Soxhlet extractor were det-ermined.The fatty acids composition in oils obtained from two kinds of extraction methods was determined by GC and the content of VE was determined by HPLC.Specific gravity and iodine value of Ginkgo oil were higher than that of general plant oils,which showed that unsaturated fatty acids were main ingredients in the Ginkgo oil.The GC results showed that percentage of unsaturated fatty acids in the Ginkgo oil was above 91%,the oleic acid and linoleic acid accounted for above 75%.HPLC results showed that the content of VE in Ginkgo oil was 670 mg / kg and 610 mg / kg in oil extracted by Soxhlet extractor method and SFE method,respectively.