超临界CO_2萃取燕麦油的技术研究及其脂肪酸分析_宋雪梅 . Supercritical carbon dioxide extraction of oat oil and its fatty acid analysis

Abstract

The optimal technological parameters for extracting oil from oat bran were found out on the basis of orthogonal table and fatty acid compositions was analyzed by GC-MS, which provided theoretical reference to exploring functional oil. The experiment results showed: the optimal technological parameters were: pressure 15MPa, temperature 35℃and time 3 hours. Extracted oil was clear and golden in color with its special fragrance. Main fatty acid compositions were: palmitic acid 15.3%, stearic acid 2.24%, trans-9-octadecenoic acid 44.84%, linoleic acid 33.81%, linolenic acid 1.69% and cis-9-octadecenoic acid 2.12%, and the content of unsaturated fatty acid was 82.26%.