| 稻草秸秆3种预处理方法的比较 |
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| 引用本文： | 孙万里,陶文沂.稻草秸秆3种预处理方法的比较[J].精细化工,2009,26(7). |
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| 作者姓名： | 孙万里 陶文沂 |
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| 作者单位： | 1. 江南大学,工业生物技术教育部重点实验室,江苏,无锡,214122;江西省宜春学院化学与生物工程学院,江西,宜春336000
2. 江南大学,工业生物技术教育部重点实验室,江苏,无锡,214122 |
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| 摘 要： | 底物w(纤维素)和w(半纤维素)是木质纤维素转化为乙醇、乳酸和其他化学品最为重要的因素。为了提高底物w(纤维素)、w(半纤维素)和糖化得率,该文采用稀硫酸、氢氧化钠和氢氧化钠联合过氧乙酸等3种化学方法对稻草秸秆进行了预处理。结果表明,用ρ(NaOH)=20 g/L的碱液于85℃与ρ(过氧乙酸)=60 g/L酸液于75℃联合处理秸秆时,秸秆w(纤维素)从41.5%上升到81.5%,w(半纤维素)下降为13.7%,纤维素酶酶解48 h葡萄糖质量浓度达37.7 g/L,木糖质量浓度为12.8 g/L;用ρ(NaOH)=20 g/L碱液于121℃处理秸秆时,秸秆w(纤维素)为66.3%,w(半纤维素)为20.2%,酶解60 h后葡萄糖质量浓度为33.5 g/L,72 h木糖质量浓度为15.1 g/L。
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| 关 键 词： | 预处理 酶水解 稻草秸秆 纤维素 生物工程 |
Comparative Study of Three Pretreatment on Rice Straw |
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| SUN Wan-li,TAO Wen-yi.Comparative Study of Three Pretreatment on Rice Straw[J].Fine Chemicals,2009,26(7). |
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| Authors: | SUN Wan-li TAO Wen-yi |
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| Affiliation: | 1.Key Lab.of Industrial Biotechnology;Ministry of Education;Jiangnan University;Wuxi 214122;Jiangsu;China;2.College of Chemistry and Bioengineering;Yichun University;Yichun 336000;Jiangxi;China |
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| Abstract: | The cellulose and hemicellulose mass fractions of substrate is the most important factors for the production of ethanol,lactic acid and other chemicals from lignocellulose.To increase the cellulose and hemicellulose mass fractions of substrate and sugar yield during the enzymatic hydrolysis,three pretreatment methods with dilute H2SO4,alkaline and alkaline coupling peracetic acid for rice straw were investigated.After pretreated with the alkaline coupling peracetic acid,the cellulose mass fraction in the ri... |
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| Keywords: | pretreatment enzymatic hydrolysis rice straw cellulose biological engineering |
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