期刊论文

中文

中国油脂

1003-7969

2022

47

4

72-76

10.19902/j.cnki.zgyz.1003-7969.210302

湖北省果蔬精深加工及营养功能食品开发企校联合创新中心(whpu-2020-kj-304)。

本校为第一机构

以超临界CO_2萃取的苦瓜籽油为原料,经皂化酸解法制得混合脂肪酸,再采用尿素包合法富集其中的α-桐酸。在单因素试验的基础上,采用正交试验对富集工艺条件进行优化。结果表明,α-桐酸的最佳富集工艺条件为:采用95%乙醇作为尿素溶剂,混合脂肪酸与尿素质量比1∶3,尿素与95%乙醇质量比1∶5,包合温度4℃,包合时间24 h。在最佳工艺条件下,α-桐酸纯度从苦瓜籽油中的28.83%提高至60.03%,产物中共轭亚麻酸相对含量达到71.28%。

Using bitter gourd seed oil extracted by supercritical CO;as raw material,the mixed fatty acid was obtained by saponification and acid hydrolysis,and then theα-eleostearic acid was enriched by urea adduction fractionation.Based on single factor experiment,the enrichment conditions were optimized by orthogonal experiment.The results showed that the optimal process for enrichingα-eleostearic acid from bitter gourd seed oil were obtained as follows:with 95%ethanol as urea solvent,mass ratio of mixed fatty acid to urea 1∶3,mass ratio of urea to ...