从生物柴油制造过程的副产物中酶法生产碳酸甘油酯。
Enzymatic production of glycerol carbonate from by-product after biodiesel manufacturing process.
机构信息
Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea.
出版信息
Enzyme Microb Technol. 2012 Aug 10;51(3):143-7. doi: 10.1016/j.enzmictec.2012.05.004. Epub 2012 May 18.
Glycerol carbonate is one of the higher value-added products derived from glycerol. In this study, glycerol carbonate (GC) was synthesized by transesterification of glycerol and dimethyl carbonate (DMC) using Novozym 435 (Candida antarctica Lipase B) at various conditions. For the enzymatic production of GC, the optimum conditions were the amount of enzyme (75 g/L), DMC/glycerol molar ratio (2.00), reaction temperature (60°C) and organic solvent (acetonitrile). Experimental investigation of the effect of water content revealed that the conversion of GC was maximized with no added water. The addition of surfactant such as Tween 80 increased the GC conversion, which finally reached 96.25% under the optimum condition and with surfactant addition.
碳酸甘油酯是甘油衍生的高附加值产品之一。在这项研究中，采用南极假丝酵母脂肪酶 B（Novozym 435）在不同条件下通过甘油和碳酸二甲酯（DMC）的酯交换反应合成碳酸甘油酯（GC）。对于 GC 的酶法生产，最佳条件为酶用量（75 g/L）、DMC/甘油摩尔比（2.00）、反应温度（60°C）和有机溶剂（乙腈）。对水含量影响的实验研究表明，不加水电离最大化 GC 的转化率。添加表面活性剂如吐温 80 可提高 GC 的转化率，最终在最佳条件和添加表面活性剂下达到 96.25%。
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