摘要
本文以超临界CO2(SC-CO2)流体萃取技术从奇可力种子中萃取脂肪油,探讨萃取温度、萃取压力、萃取时间以及夹带剂等因素对萃取收率的影响,确定了最佳萃取工艺条件为:萃取温度45℃、萃取压力35MPa、分离I压力7.0MPa,分离I温度45℃,分离Ⅱ压力6MPa,分离Ⅱ温度40℃,萃取时间3h,与传统的溶剂萃取相比,萃取时间大大缩短,可避免不饱和脂肪酸的氧化降解,产品品质优良。经GC-MS分析,奇可力脂肪有油的主要成分为:月桂酸、豆蔻酸、棕榈酸、硬脂酸、油酸、亚油酸、花生四烯酸、γ-亚麻酸和芥酸等。γ-亚麻酸在分离I和分离Ⅱ脂肪油中的含量分别为38%和3.41%,相差较大。这证明该超临界流体萃取工艺实现了对γ-亚麻酸的萃取、分离和富集。
To study influence of temperature, pressure, time, co-solvent solution on extraction rate of recovery, fatty oil was extracted from Chicory seed by the supercritical CO2 extraction. The optimal approach has been identified with the extraction temperature 45℃, the pressure 35MPa, the isolated pressure 17.0MPa, the isolated temperature 1 45℃, the isolated pressure Ⅱ 6MPa, the isolated temperature Ⅱ140℃ and extraction time 3 hours. Compared to the traditional solvent extraction approach, the time was shorter and result in avoiding degradation of unsaturated fatty acid. So, the better qualified product was obtained. According to GC-MS analysis, the main components of Chicory fatty acid is lanric acid, cardamom acid, plamitic acid, stearic acid, oleic acid, linoleic acid, arachidonic acid, γ-linolenic acid and sinapic acid. γ-linolenic acid takes 38% and 3.41% which shows significant difference in isolated Ⅰ and isolated Ⅱ fatty acid respectively. It has been suggested that supercritical CO2 extraction approach is qualified for extraction, isolation, and collection of γ-linoleulc acid.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2006年第12期459-463,共5页
Food Science
基金
吉林省教育厅资助项目(吉教合字2002第0271号)
