| 蒸汽爆破玉米秸秆提高酶解还原糖产率的研究 |
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| 引用本文： | 宁欣强,王远亮,曾国明,任慧卿,王珍.蒸汽爆破玉米秸秆提高酶解还原糖产率的研究[J].精细化工,2010,27(9). |
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| 作者姓名： | 宁欣强 王远亮 曾国明 任慧卿 王珍 |
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| 作者单位： | 重庆大学,生物工程学院,生物流变科学与技术教育部重点实验室,国家"985工程"生物材料与仿生工程研究中心,重庆,400044 |
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| 基金项目： | 国家自然科学基金，重庆市自然科学基金，重庆市发改委和重庆市教委项目 |
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| 摘 要： | 对玉米秸秆进行蒸汽爆破预处理,并对处理前后的玉米秸秆组分和结构进行了表征。酶解24 h的实验结果表明,与未处理秸秆相比,汽爆处理后样品的还原糖产率提高了97%。化学与物理分析结果表明,处理后物料半纤维素及可溶性物质质量分数减少,纤维素质量分数增加29.7%;X射线衍射仪(XRD)和扫描电镜(SEM)表明纤维素致密结构被破坏。预处理后物料酶解还原糖产率最高时汽爆工艺参数为:汽爆压力2.2 MPa,每克秸秆原料加入1 mL蒸馏水(简称液固比1 mL/g),维压时间9 min,物料颗粒度40~60目。
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| 关 键 词： | 玉米秸秆 蒸汽爆破 均匀设计 酶解 还原糖产率 |
| 收稿时间： | 2010/4/29 0:00:00 |
| 修稿时间： | 2010/6/24 0:00:00 |
Study on Improving Reducing Sugar Yield of Steam-Explosive Corn Stalk by Enzymatic Hydrolysis |
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| NING Xin-qiang,WANG Yuan-liang,ZENG Guo-ming,REN Hui-qing and WANG ZHen.Study on Improving Reducing Sugar Yield of Steam-Explosive Corn Stalk by Enzymatic Hydrolysis[J].Fine Chemicals,2010,27(9). |
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| Authors: | NING Xin-qiang WANG Yuan-liang ZENG Guo-ming REN Hui-qing and WANG ZHen |
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| Affiliation: | Bioengineering College of Chongqing University,Bioengineering College of Chongqing University,Bioengineering College of Chongqing University,Bioengineering College of Chongqing University,Bioengineering College of Chongqing University |
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| Abstract: | Corn stalk was treated by steam explosion, and the structure of untreated/treated corn stalk were detected by Scanning Electron Microscope (SEM) and X-ray diffraction(XRD), while their chemical composition were also investigated. Comparing with the untreated corn stalk, reducing sugar yield of treated corn stalk was increased by 197% after hydrolyzing for 24h. The relative content of hemicelluloses and solvend decreased, while cellulose increased by 29.7%; the compact structure of corn stalk was remarkably destroyed. The optimum steam exploded process condition: operating pressure 2.2MPa, solid-liquid ratio 1:1, reaction time 9min and materials size 40-60 meshes. |
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| Keywords: | corn stalk steam explosion uniform design enzymatic hydrolysis reducing sugar yield |
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