纤维素经离子液体预处理酶解糖化研究

摘要/Abstract

摘要：

利用离子液体氯化1－丁基－3－甲基－咪唑（[C4mim]Cl）进行纤维素预处理。实验表明，纤维素经离子液体预处理后聚合度下降；糖化速度随预处理温度增加呈现先增大后下降的趋势，在90℃出现最大值；延长预处理时间和采用乙醇作为沉淀剂，可促进酶解糖化。与未处理的纤维素相比，经离子液体预处理后纤维素的糖化速度可提高70％。根据扫描电子显微镜（SEM）观察，纤维素出现了明显的解聚。

关键词: 纤维素，离子液体，酶，糖化，预处理

Abstract:

Cellulose was pretreated using the IL, 1-n-butyl-methylimidazolium chloride([C4mim]Cl). The experimental results showed that DP(degree of polymerization) of cellulose is diminished by [C4mim]Cl pretreatment. With the increase of pretreatment temperature, the saccharification rate increases at first and later decreases and it reaches the fastest at 90ºC. Extending pretreatment time or using ethanol as anti-solvent can enhance saccharification kinetics. The saccharification rate increased by 70% as compared to that of untreated cellulose. SEM studies show that the cellulose depolymerized into fragments by [C4mim]Cl.

Key words: cellulose,ionic liquid,saccharification,pretreatment

中图分类号:

O645.5
TQ35

刘振,代辉,王键吉. 纤维素经离子液体预处理酶解糖化研究[J]. 应用化学, 2009, 26(09): 1111-1113.

LIU Zhen*, DAI Hui, WANG Jian-Ji. Cellulose saccharification using an ionic liquid pretreatment[J]. Chinese Journal of Applied Chemistry, 2009, 26(09): 1111-1113.

纤维素经离子液体预处理酶解糖化研究

Cellulose saccharification using an ionic liquid pretreatment

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