| NaOH预处理对玉米秸秆纤维结构特性和酶解效率的影响 |
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| 引用本文： | 赵晶,张福蓉,陈明,徐晨,权春善,范圣第.NaOH预处理对玉米秸秆纤维结构特性和酶解效率的影响[J].农业环境科学学报,2016,35(7):1407-1412. |
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| 作者姓名： | 赵晶 张福蓉 陈明 徐晨 权春善 范圣第 |
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| 作者单位： | 1. 大连民族大学生命科学学院,国家民委-教育部生物化工重点实验室,辽宁大连116600;2. 大连工业大学生物工程学院,辽宁大连,116034 |
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| 基金项目： | 辽宁省自然科学基金项目（2014026011）；中央高校基本科研业务费项目（DC201502020407） |
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| 摘 要： | 为研究不同温度下Na OH预处理对玉米秸秆纤维结构特性和酶解得率的影响,为确定纤维原料碱法预处理的适宜条件提供理论依据,采用稀Na OH溶液对玉米秸秆分别在60、80、105℃下预处理,测定了预处理前后纤维原料的化学组成和酶解得率,并采用扫描电镜(SEM)、X射线衍射仪(XRD)和傅里叶变换红外光谱仪(IR)对预处理前后玉米秸秆的纤维结构进行了表征。结果表明:Na OH预处理能够有效脱除玉米秸秆中木质素,增加纤维素和半纤维素比例,提高纤维素结晶度,产生的润涨作用导致纤维束状结构疏松。Na OH 80℃预处理1 h后,玉米秸秆中纤维素结晶度达到63.7%,60 h的酶解得率达到71.4%;碱处理温度进一步升高则会充分暴露纤维表面纹孔,同时使纤维素分子内氢键重新形成,容易进一步损失半纤维素,降低纤维素的润涨程度,从而降低酶解效率。80℃条件下碱处理能够有效改善玉米秸秆纤维结构,提高其转化利用效率。
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| 关 键 词： | 玉米秸秆 NaOH预处理 化学组成 纤维结构 酶水解 |
| 收稿时间： | 2015/12/14 0:00:00 |
Effect of NaOH pretreatments on cellulosic structure and enzymatic hydrolysis of corn stover |
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| ZHAO Jing,ZHANG Fu-rong,CHEN Ming,XU Chen,QUAN Chun-shan and FAN Sheng-di.Effect of NaOH pretreatments on cellulosic structure and enzymatic hydrolysis of corn stover[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2016,35(7):1407-1412. |
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| Authors: | ZHAO Jing ZHANG Fu-rong CHEN Ming XU Chen QUAN Chun-shan and FAN Sheng-di |
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| Institution: | College of Life Science, Dalian Nationalities University, Key Laboratory of Biochemical Engineering of State Ethnic Affairs CommissionMinistry of Education, Dalian 116600, China,College of Life Science, Dalian Nationalities University, Key Laboratory of Biochemical Engineering of State Ethnic Affairs CommissionMinistry of Education, Dalian 116600, China,School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China,College of Life Science, Dalian Nationalities University, Key Laboratory of Biochemical Engineering of State Ethnic Affairs CommissionMinistry of Education, Dalian 116600, China,College of Life Science, Dalian Nationalities University, Key Laboratory of Biochemical Engineering of State Ethnic Affairs CommissionMinistry of Education, Dalian 116600, China and College of Life Science, Dalian Nationalities University, Key Laboratory of Biochemical Engineering of State Ethnic Affairs CommissionMinistry of Education, Dalian 116600, China |
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| Abstract: | |
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| Keywords: | corn stover NaOH pretreatment chemical composition cellulosic structure enzymatic hydrolysis |
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