| 磷酸预处理对小麦秸秆酶解糖化的影响 |
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| 引用本文： | 曾青兰.磷酸预处理对小麦秸秆酶解糖化的影响[J].湖北农业科学,2012,51(15):3311-3314. |
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| 作者姓名： | 曾青兰 |
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| 作者单位： | 咸宁职业技术学院生物工程系,湖北咸宁,437100 |
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| 基金项目： | 湖北省教育厅科学技术研究项目(B20129303);咸宁职业技术学院院级重点课题(2012yja002) |
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| 摘 要： | 为提高小麦秸秆木质纤维素的能源化利用效率,在常压温和条件下用磷酸对小麦秸秆进行预处理,研究了预处理秸秆颗粒度、固液比、温度、时间对小麦秸秆酶解糖化率的影响,并用扫描式电镜分析了预处理前后小麦秸秆结构的变化.结果表明,在小麦秸秆颗粒度60目、固液比1.0∶8.5、温度70℃、处理时间1.0h的预处理条件下,小麦秸秆酶解糖化率50 min时从25.4％(未预处理)提高到70.3％(预处理).SEM分析表明,经磷酸预处理后小麦秸秆崩解为碎片,为后续的酶解糖化提供了良好的条件.
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| 关 键 词： | 小麦秸秆 磷酸预处理 酶解糖化 |
Effects of Phosphoric Acid Pretreatment on Enzymatic Saccharification of Wheat Straw |
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| ZENG Qing-lan.Effects of Phosphoric Acid Pretreatment on Enzymatic Saccharification of Wheat Straw[J].Hubei Agricultural Sciences,2012,51(15):3311-3314. |
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| Authors: | ZENG Qing-lan |
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| Institution: | ZENG Qing-lan(Department of Biological Engineering,Xianning Vocational Technical College,Xianning 437100,Hubei,China) |
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| Abstract: | In order to improve the energy utilization efficiency of wheat straw lignocellulose,wheat straw was pretreated with phosphoric acid under normal pressure and mild condition.The effects of particle size,solid-liquid ratio and temperature and time on enzymatic saccharification ratio of wheat straw were studied.The structure changes of the wheat straw were scanned by a scanning electron microscope(SEM) before and after pretreatment.The results showed that the enzymatic saccharification ratio of wheat straw increased from 25.4% to 70.3% when the particle size of rice straw was 60 mesh,solid-liquid ratio was 1.0∶8.5,the pretreated temperature was 70 ℃ and the pretreated time was 1.0 h.SEM analysis showed that wheat straw disintegrated to pieces after pretreated by phosphoric acid.It will provides good conditions for the subsequent enzymatic saccharification. |
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| Keywords: | wheat straw phosphoric acid pretreatment enzymatic saccharification |
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