非水相脂肪酶催化阿魏酸淀粉酯合成
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黑龙江省应用技术研究与开发项目(GC13C111)、哈尔滨商业大学研究生创新科研基金项目(YJSCX2015-391HSD)


Lipase-catalyzed Synthesis of Feruli cacid Starch ester in Non-aqueous System
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    摘要:

    以玉米淀粉和阿魏酸乙酯为原料,利用脂肪酶催化合成阿魏酸淀粉酯。对反应介质和脂肪酶进行了筛选,同时对影响合成阿魏酸淀粉酯反应的因素进行了探究,主要考察了底物摩尔比、酶添加量、反应时间及反应温度等参数对该反应的影响。采用紫外分光光度计对取代度进行测定,并以取代度为考察指标,确定了最佳反应条件:Novozym435脂肪酶为催化剂、异辛烷为反应介质、底物摩尔比为3:1、酶添加量为10%、反应时间18 h、反应温度65 ℃,在此条件下,产物的最大取代度可达0.031. 并通过FT-IR以及1H NMR对产物进行表征。

    Abstract:

    An efficient procedure for the lipase-catalyzed synthesis of Starch Ferulate has been established in non-aqueous system. Corn starch was used as the acyl acceptor and ethyl ferulate was used as the acyl donor. The trans-esterification of starch with ethyl ferulate was carried out in a few kinds of solvent at different temperatures and different times. The amount of lipase and the ratio of starch to ethyl ferulate also had been studied. The maximum degree of substitution of Starch Ferulate 0.031 was obtained by the presented method under the optimum reaction conditions: Novozym435 lipase as catalyst, isooctane as reaction medium, molar ratio of ethyl ferulate to starch was 3:1, amount of Lipase was 10%, 65 ℃ for18 h. The structure of Starch Ferulate was analyzed by FT-IR and 1H NMB.

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李泉荟,辛嘉英.非水相脂肪酶催化阿魏酸淀粉酯合成[J].精细化工,2016,33(11):

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  • 收稿日期:2016-05-10
  • 最后修改日期:2016-07-08
  • 录用日期:2016-08-22
  • 在线发布日期: 2016-10-10
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