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首页> 外文期刊>Bioprocess and Biosystems Engineering >Immobilized Talaromyces thermophilus lipase as an efficient catalyst for the production of LML-type structured lipids
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Immobilized Talaromyces thermophilus lipase as an efficient catalyst for the production of LML-type structured lipids

机译：固定化嗜热Talaromyces嗜热脂肪酶作为生产LML型结构脂质的有效催化剂

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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.
机译：LML型结构化脂质是中链和长链三酰基甘油的一种。 LML是使用固定化的Talaromyces thermophilus脂肪酶（TTL）催化的三辛酸和亚油酸乙酯酯交换合成的。选择树脂AB-8，并且确定的脂肪酶/支持比为60mg / g。随后，将具有严格sn-1,3区域特异性的固定化TTL用于合成LML。在优化条件下（60摄氏度，反应时间6小时，酶负载量为底物总重的6％，亚油酸乙酯与三辛酸摩尔比为6：1的底物），带有两个长链和一个中链的三酰基甘油获得的FA（DL-TAG）含量高达52.86mol％。放大反应进一步证实了所建立方法的工业潜力。最终产物含有85.24mol％的DL-TAG，其中纯化后的LML为97mol％。具有高LML含量的最终产品具有用作功能性油的巨大潜力。

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