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Enzymatic synthesis of phytosterol esters with pyruvate and phytosterol
Author(s): LI Ping, LIU Guoqin, CHEN Jie, LI Lin
Pages: 37-
41
Year: 2012
Issue:
10
Journal: China Oils and Fats
Keyword: 植物甾醇; 丙酮酸; 合成; 植物甾醇酯;
Abstract: 以脂肪酶Lipozyme 435为催化剂,研究了植物甾醇与丙酮酸在有机溶剂正己烷中酯化合成植物甾醇酯(PE)的工艺,最佳工艺条件为:分子筛添加量40 mg/mL,反应温度55℃,底物摩尔比1∶5(植物甾醇与丙酮酸摩尔比),酶添加量5%(以丙酮酸质量计),反应时间20 h.在最优反应条件下,酯化率为93.02%.研究表明植物甾醇和丙酮酸可以酯化合成植物甾醇酯,且可得到较高的酯化率.
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