Immobilized Talaromyces thermophilus lipase as an efficient catalyst for the production of LML-type structured lipids

文献类型： 外文期刊

第一作者： Lian, Weishuai

作者： Lian, Weishuai;Wang, Yonghua;Wang, Weifei;Tan, Chin Ping;Wang, Jianrong;Wang, Yonghua

作者机构：

关键词： Talaromyces thermophilus lipase; Immobilization; Interesterification; Structured lipids; Functional oils

期刊名称：BIOPROCESS AND BIOSYSTEMS ENGINEERING （ 影响因子：3.21； 五年影响因子：2.97 ）

ISSN： 1615-7591

年卷期： 2019 年 42 卷 2 期

页码：

收录情况： SCI

摘要： LML-type structured lipids are one type of medium- and long-chain triacylglycerols. LML was synthesized using immobilized Talaromyces thermophilus lipase (TTL)-catalyzed interesterification of tricaprylin and ethyl linoleate. The resin AB-8 was chosen, and the lipase/support ratio was determined to be 60mg/g. Subsequently, the immobilized TTL with strict sn-1,3 regiospecificity was applied to synthesize LML. Under the optimized conditions (60 degrees C, reaction time 6h, enzyme loading of 6% of the total weight of substrates, substrate of molar ratio of ethyl linoleate to tricaprylin of 6:1), Triacylglycerols with two long- and one medium-chain FAs (DL-TAG) content as high as 52.86mol% was obtained. Scale-up reaction further verified the industrial potential of the established process. The final product contained 85.24mol% DL-TAG of which 97mol% was LML after purification. The final product obtained with the high LML content would have substantial potential to be used as functional oils.

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