| 离子液体对酶原位降解微晶纤维素的促进作用 |
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| 引用本文： | 徐翠枝,李露,刘仕伟,于世涛,刘福胜,解从霞. 离子液体对酶原位降解微晶纤维素的促进作用[J]. 高分子材料科学与工程, 2011, 0(5): 85-88 |
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| 作者姓名： | 徐翠枝 李露 刘仕伟 于世涛 刘福胜 解从霞 |
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| 作者单位： | 青岛科技大学化工学院;青岛科技大学化学与分子工程学院 |
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| 基金项目： | 山东省教育厅项目(J09LG16);山东省化学工程强化建设科学(青岛科技大学)开放基金;国家自然基金资助项目(31070520) |
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| 摘 要： | 构建离子液体1-乙基-3-甲基咪唑醋酸盐[EMIM]OAc与纤维素的均相体系,采用酶原位降解法,以3,5-二硝基水杨酸法表征降解效果,考察各因素的影响确定最佳工艺条件:6.6 g 3%(质量分数)原溶液与4 mL pH4.6柠檬酸钠缓冲溶液组成均相体系、6 mg酶、50℃、26 h,酶解率迭78.5%,比非均相下提高了...
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| 关 键 词： | 离子液体 微晶纤维素 酶解 |
Enzymatic Degradation of Cellulose Promoted by Ionic Liquid |
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| Cuizhi Xu,Lu Li,Shiwei Liu,Shitao Yu,Fusheng Liu,Congxia Xie. Enzymatic Degradation of Cellulose Promoted by Ionic Liquid[J]. Polymer Materials Science & Engineering, 2011, 0(5): 85-88 |
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| Authors: | Cuizhi Xu Lu Li Shiwei Liu Shitao Yu Fusheng Liu Congxia Xie |
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| Affiliation: | 1.College of Chemical Engineering,Qingdao University of Science and Technology;2.College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China) |
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| Abstract: | The enzymatic degradation of microcrystalline cellulose in the homogeneous system of 1-ethyl-3-methylimidazolium acetate(OAc) and cellulose was investigated.The influence of reaction conditions on the results of degradation was examined by using 3,5-dinitrosalicylic acid(DNS) characterization method to detect the result of degradation.The optimum condition for degradation is obtained as follows: 6.6 g 3% cellulose in ionic liquid solution,4 mL pH4.6 citric acid-sodium citrate buffer solution,enzyme 6 mg,reaction temperature 50 ℃ and reaction time 26 h.Under the above condition,the enzymatic rate is 78.5%.It is also found that ionic liquid OAc has good cellulose solubility and biocompatibility,which is efficient to promote the enzymatic degradation of cellulose. |
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| Keywords: | ionic liquid microcrystalline cellulose enzymatic degradation |
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