内蒙古丰镇市亚麻籽油的超临界CO2萃取和气质联用检测

摘要

The effects of pressure on the yield of flaxseed oil in the extraction process of flaxsee d oil by supercritical CO 2 extraction technology were studied under the constant-pressure extraction conditions(21, 28,35 MPa) . The lipid composition and the content of each component of flaxseed oil extracted by supercritical CO2 extraction technology and traditional pressing method were detected by GC-MS. The results showed that the maximal yield of flaxseed oil extracted for 120 min under 35 MPa was 35.65%, which could meet the actual application demands. The fatty acid composition in the flaxseed oil extracted by supercritical CO2 extraction was basically same with that by traditional pressing method. The content of linolenic acid in the flaxseed oil extracted by supercritical CO2 extraction was slightly higher.%试验选择3个等压（21、28、35 MPa）提取条件，研究超临界CO2萃取亚麻籽油过程中压力对亚麻籽油得率的影响，并使用GC-MS（气相色谱-质谱联用）检测超临界CO2萃取亚麻籽油和传统压榨法提取亚麻籽油的脂质组成和各组分的含量。结果发现，在35 MPa下萃取120 min亚麻籽油的得率最高，为35.65％，可以达到实际应用的需求；超临界CO2萃取亚麻籽油与压榨油在脂肪酸构成上基本相同，前者α-亚麻酸的含量略高。