摘要
共轭亚麻酸具有多种有益的生理功能,本文以亚麻油(含53.5%亚麻酸)为原料,氢氧化钾为催化剂,乙二醇为溶剂,碱催化异构化方法制备共轭亚麻酸,采用气相色谱法表征。研究了反应温度、时间、碱油比及溶剂用量对亚麻油共轭化的影响,得到了制备共轭亚麻酸的最佳实验条件。结果表明,当反应温度180℃,反应时间40 min,碱油比(mA∶mO)=3∶1,溶剂油比(VS∶mO)=20∶1时,亚麻酸的共轭收率可达52.70%。该方法能使反应在均相反应体系中较为温和的温度条件下较短的时间内完成。
Conjugated linolenic acids were prepared by alkali isomerization with linseed oil （including 53.5% linolenic acid） as raw material, KOH as catalyst, and glycol as solvent. The products were characterized by gas chromatography. The results showed the maximal yield of 52.70% when alkali /oil ratio is 3, solvent/oil ratio is 20, reaction time is 40 min, and reaction temperature is 180℃. The preparation can be carried out in homogeneous temperature system.
出处
《大连工业大学学报》
CAS
北大核心
2010年第2期130-132,共3页
Journal of Dalian Polytechnic University
关键词
共轭亚麻酸
碱催化
异构化
conjugated linolenic acid（CLN）
alkali
isomerization
