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首页> 外文期刊>Energy Conversion & Management >Availability of four energy crops assessing by the enzymatic hydrolysis and structural features of lignin before and after hydrothermal treatment
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Availability of four energy crops assessing by the enzymatic hydrolysis and structural features of lignin before and after hydrothermal treatment

机译：通过酶解和木质素水热处理前后的结构特征评估四种能源作物的有效性

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摘要

The anatomical characteristics, chemical composition, enzymatic hydrolysis efficiency and lignin characteristics of four energy crops (switchgrass, Miscanthus x giganteus, Hybrid Pennisetum, and Triarrhena lutarioriparia) before and after hydrothermal treatment (180 degrees C, 1 h) were investigated comprehensively to evaluate their potential for the bioenergy production. The hydrothermal treatment resulted in the deconstruction of the biomass cell walls and redistribution of the main components, accompanying with the removal of most hemicelluloses and partial lignin as well as favorable exposure of cellulose. These alterations significantly increased the efficiency of enzymatic hydrolysis, and the different recalcitrance of the four feedstocks was evenly erased by hydrothermal treatment. Among the four crops, Hybrid Pennisetum. with high cellulose and low lignin contents had a better performance in the enzymatic hydrolysis process both before and after treatment. Meanwhile, the maximum concentration of low degree of polymerization xylo-oligosaccharides (2-6) and the lowest amount of degraded products were obtained from Hybrid Pennisetum during the treatment process. Moreover, the structural features of the residual lignin in the treated substrates were elaborately analyzed for deeply understanding the fundamental chemistry of lignin during the treatment. The present study is beneficial to the fully effective utilization of biomass components and extension of the energy sources.
机译：综合研究了四种能源作物（柳枝,、芒草x giganteus，杂交狼尾草和Tri藜）在水热处理（180摄氏度，1小时）之前和之后的解剖学特征，化学组成，酶水解效率和木质素特性，以对其进行评估。生物能源生产的潜力。水热处理导致生物质细胞壁的解构和主要成分的重新分布，同时去除了大部分半纤维素和部分木质素以及纤维素的良好暴露。这些改变显着提高了酶水解的效率，并且通过水热处理均匀地消除了四种原料的不同顽抗性。在四种作物中，杂交狼尾草。具有高纤维素和低木质素含量的纤维素在处理前后的酶促水解过程中具有更好的性能。同时，在处理过程中，从杂交狼尾草获得了最高浓度的低聚合木糖寡糖（2-6）和最低量的降解产物。此外，对经过处理的底物中残留的木质素的结构特征进行了详细分析，以深入了解处理过程中木质素的基本化学性质。本研究有益于生物质组分的充分有效利用和能源的扩展。

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  • 来源
    《Energy Conversion & Management》 |2018年第1期|58-67|共10页
  • 作者

    Li Han-Yin; Wang Bing; Wen Jia-Long; Cao Xue-Fei; Sun Shao-Ni; Sun Run-Cang;

  • 作者单位

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Energy crops; Hydrothermal treatment; Anatomical changes; Enzymatic hydrolysis; Lignin;

    机译：能源作物;水热处理;解剖变化;酶水解;木质素;

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