机构地区: 四川理工学院生物工程学院
出 处: 《四川食品与发酵》 2005年第4期15-17,共3页
摘 要: 本文运用正交实验研究了在无溶剂系统中,利用1,3位置特异性脂肪酶催化POMF与硬脂酸甲酯进行酯交换反应制取类可可脂。结果表明:应以LipozymeIM做为催化剂,反应温度为55℃,振荡速度为150r/min,酶/底物配比为300U/10g,硬脂酸甲酯/POMF配比为1,且其产品经过差示扫描量热法(DSC)分析,热性能符合类可可脂质量的要求。 Cocoa butter equivalent (CBE) produced from palm oil mid fraction (POMF) and stearic acid methyl ester (SAME) by interesterfication catalyzed by 1,3 -specific lipases in solvent free system by using orthongonal tests was studied. The results showed that the optimum conditions were as follows:Lipozyme IM as catalyzator,the temperature 55℃, shake speed 150r/min, initial ratio of lipase to substrates 300 U/10g , initial ratio of SME to POMF 1. The CBE was qualified by differential scanning calorimetry (DSC) analysis.