交酯化法制备鱼油多不饱和脂肪酸乙酯的研究

Study on the Preparation of Polyunsaturated Fatty Acid Ethyl Ester from Fish Oil by Transesterification

采用正交实验设计法，对交酯化法制备鱼油多不饱和脂肪酸乙酯的工艺条件进行研究，优选出提高乙酯转化率的最佳条件。鱼油：无水乙醇：Cat．1＝1：0．86：0．029。采用滴加乙醇－Cat．1溶液方式．在50℃反应3h，交酯化反应可较方便地制备鱼油多不饱和脂肪酸乙酯。重复3次实验，转化率均大于93％，稳定性良好。

The orthogonal experimental design method is used to study the technological conditions of preparing polyunsaturated fatty acid ethyl ester from fish oil by transesterification. Optimal conditions to enhance the ethyl ester changing rate are selected: fish oil (ml): anhydrous ethanol (ml): Cat. 1(g) = 1: 0. 86: 0. 029. By adding the ethanol-Cat. 1 solution, polyunsaturated fatty acid ethyl ester from fish oil can be prepared very conveniently by transesterification at 50 ℃ for 3 hours. Ethyl ester changing rates are all above 93% in 3 repeated experiments with good stability.