碱蓬籽油异构化生产共轭亚油酸的研究

Study on the preparation of conjugated linoleic acids by alkali isomerization of suaeda salsa seed oil

采用KOH为催化剂,正丁醇为溶剂,碱蓬籽油通过碱性异构化反应制备共轭亚油酸(CLA)。设计了反应温度、时间、碱蓬籽油用量对碱性异构化反应影响的正交实验,结果表明:转化温度为163℃,时间为2.5h,油∶碱(重量)=0.55∶1分别为选择性最大值的最佳因素:各因素对选择性的影响顺序为:C(油∶碱)>A(温度)>B(时间)。对实验数据进行回归,所得图形分析结果与正交设计实验分析相吻合。

The conjugated linoleic acids(CLA)were prepared by alkali isomerization with KOH as catalyst,butyl alcohol as solvent and suaeda salsa seed oil as raw material.Orthogonal experiment was designed to study the effects of different factors such as reaction temperature,time and suaeda salsa seed oil weight etc.on alkali isomerization.The optimum conditions of heighest selectivity respectively were:reaction temperature 163℃,time (2.5h),and oil∶KOH (weight)=0.55∶1,and the effect order on the selectivity of CLA of different factors was:C(oil∶KOH)>A(temperature)>B(time).The regression analysis of experiment result was carried out.The analytic results of figures come up to the orthogonal experiment design.