中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (09): 1111-1113.

• 研究简报 • 上一篇    下一篇

纤维素经离子液体预处理酶解糖化研究

刘振*,代辉,王键吉   

  1. (河南科技大学化工与制药学院 洛阳 471003)
  • 收稿日期:2008-09-03 修回日期:2009-01-19 出版日期:2009-09-10 发布日期:2009-09-10
  • 通讯作者: 刘振，博士，副教授; E-mail:liuzhen125@yahoo.com.cn; 研究方向：生物可再生能源
  • 基金资助:
    国家“八六三”计划（2007AA05Z454）洛阳市科技发展计划（0801027A）河南科技大学人才科学研究基金（06003）资助项目

Cellulose saccharification using an ionic liquid pretreatment

LIU Zhen*, DAI Hui, WANG Jian-Ji   

  1. (College of Chemical Engineering & Pharmaceutics,Henan University of Science and Technology,Luoyang 471003)
  • Received:2008-09-03 Revised:2009-01-19 Published:2009-09-10 Online:2009-09-10

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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

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