脂肪酶催化牛油甘油解反应合成单甘酯

LipaseCatalyzed Synthesis ofMonoglyridesThroughGlycerolysisof a Triglyceride Fat Without Use of Organic Solvent

以猪胰脂肪酶为催化剂在无有机溶剂体系中由牛油通过甘油解反应可合成单甘油酯．研究表明，当反应温度为４２℃，甘油与油脂摩尔比为４∶１，甘油中水含量为４％时获得的单甘酯含量最高，达１９．５１％，反应在２４ｈ左右达到平衡．将反应混合物置于常温下储存，单甘酯含量继续提高，６ｄ后达到平衡，为２８．７２％．

Monoglycerides can be obtained through porcine pancreatic lipasecatalyzed glycerolysis of beef tallow without use of organic solvent.The study shows that the maximal content of monoglycerides was given when the temperature was 42℃,the molar ratio of beef glycerol to tallow was 4:1 and water content in glycerol was 4.0%,reaching 19.51%.The reaction reached equilibrium after about 24 h.The content of monoglycerides continued to increase when the reaction mixture was stored at natural temperature,reaching 28.27% after 6 days.