Lipase-Catalyzed Acyl-L-Carnitines Synthesis in [Bmim]PF6 Ionic Liquid

文献类型： 外文期刊

第一作者： Tian, Jin-qiang

作者： Tian, Jin-qiang;Wang, Qiang

作者机构：

关键词： acyl-L-carnitine;lipase;[Bmim]PF6;ionic liquid

期刊名称：INTERNATIONAL JOURNAL OF FOOD ENGINEERING （ 影响因子：1.713； 五年影响因子：1.637 ）

ISSN： 1556-3758

年卷期： 2009 年 5 卷 1 期

页码：

收录情况： SCI

摘要： In order to significantly improve the biosynthesis of acyl-L-carnitines catalyzed by lipase, there must be an efficient and suitable reaction medium that is not only polar but also hydrophobic. [Bmim]PF6, which satisfies the above two requirements, was applied as the medium. The optimal reaction conditions were: for isovaleryl-L-carnitine, 0.22a4(W), 200mg molecular sieves, 60oC, 4: 1 of molar ratio (fatty acid: L-carnitine), 150rpm and 60h; for octanoyl-L-carnitine and palmitoyl-L-carnitine, 0.22a(W), 250 mg molecular sieves, 5: 1 of molar ratio (fatty acid: L-carnitine), 200rpm, 48h, 60((sic))C (octanoyl-L-carnitine) and 65((sic))C (palmitoyl-L-carnitine). Their overall yields could reach 59.14%, 90.79% and 98.03%, respectively. The yields of isovaleryl-L-carnitine, octanoyl-L-carnitine and palmitoyl-L-carnitine in [Bmim]F-6 were 16.21%, 73.67% and 44.22% more than those in acetonitrile, respectively. [Bmim]PF6 as the medium was better than acetonitrile. It could not only enhance the yields of acyl-L-carnitines, but also protect the lipase activity.

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