1-十六烷基吡啶氯盐对纯纤维素酶解糖化的影响
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TQ423.99

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Effect of 1-Hexadecylpyridinium chloride monohydrate on the enzymatic saccharification hydrolysis of pure cellulose
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    摘要:

    研究了阳离子表面活性剂1-十六烷基吡啶氯盐对纯纤维素酶解糖化的优化条件及对体系酶活和酶动力学的影响。结果表明:1-十六烷基吡啶氯盐提高纯纤维素酶解的最佳条件为酶量10FPU/g,底物质量分数 1.25%,表面活性剂质量浓度5g/L,反应时间12 h。纤维素平均转化率为59.91%,比无添加表面活性剂的酶解纤维素转化率39.12%提高了20.79%。1-十六烷基吡啶氯盐的加入,提高了酶解反应的最大反应速度和米氏常数,最大反应速度提高了58.22%,米氏常数提高了1.01倍。相对酶活提高率随时间呈现先升高后降低的规律,相对酶活提高率最高值出现在24h处,且相对酶活提高最高达53.18%。

    Abstract:

    The improvements of 1-hexadecylpyridinium chloride monohydrate on the production of glucose by the enzymatic hydrolysis of pure cellulose, the effects of enzyme activity and enzyme kinetics have been investigated. The results showed that, the optimal enzymatic hydrolysis conditions of pure cellulose were as follows: enzyme dosage was 10 FPU/g, mass fraction of substrate was 1.25%, surfactant mass concentration was 5g/L, reaction time was 12h. The average conversion rate of cellulose was 59.91%, and improved 20.79% compared with the value of 39.12% without adding surfactant. The addition of 1-hexadecylpyridinium chloride monohydrate increased the maximum rate of enzymatic hydrolysis and the Michaelis constant,and the maximum reaction rate increased by 58.22%, the Michaelis constant increased by 1.01 times. The relative enzyme activity increased firstly and then decreased with time, the highest value of relative enzyme activity increased was 53.18% at 24h.

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王姗,周雅文.1-十六烷基吡啶氯盐对纯纤维素酶解糖化的影响[J].精细化工,2017,34(5):0

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历史
  • 收稿日期:2016-08-21
  • 最后修改日期:2016-10-14
  • 录用日期:2016-12-14
  • 在线发布日期: 2017-04-07
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