Saccharification of lignocellulosic biomasses via ionic liquid pretreatment
Saccharification of lignocellulosic biomasses via ionic liquid pretreatment
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DOI：
10.1016/j.indcrop.2016.08.017
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发表时间：
2016-12-15
影响因子：
5.9
通讯作者：
Mikkola, J. -P.
中科院分区：
文献类型：
--
作者：
Aid, T.;Hyvarinen, S.;Mikkola, J. -P.
本论文主要研究了离子液体与热处理相结合对云杉、桦树、松树和冬小麦秸秆等木质生物质的预处理效果。后者进行了研究，作为比较，目的是提高其消化率在酶促水解，其中IL-处理的影响，纤维素耐水解进行了研究。考虑到木材种类，本工作选择了北方最常见和工业上最重要的木材种类，目标是获得可发酵糖及其降解产物，即5-羟甲基糠醛（5-HMF），这是已知的有价值的平台化学品。此外，研究了这些物种之间IL可获得的碳水化合物的产率的差异。云杉的葡萄糖产率最高，松树边材的阿拉伯糖产率最高，分别为12.07和7.72 mmol/L。云杉心材在较长的处理时间（如100 h）下5-HMF产量最高（9.18mmol/L）。然而，对于木质生物质，目前的工作更多地集中在研究和分析的IL-处理后的含IL的液体部分，木材水解产物，旨在回答与此馏分相关的分析挑战。(C)2016爱思唯尔B. V.保留所有权利。
The current work focuses on the pretreatment efficiency of ILs combined with heat for woody biomass consisting of spruce, birch and pine as well as winter wheat straw. The latter was investigated as a comparison and with the aim to enhance its digestibility during enzymatic hydrolysis whereby the influence of IL-treatment to cellulose resistance for hydrolysis was investigated. Considering the wood species, the most common and industrially important wood species in Northern Europe were chosen in the present work and the goal was to obtain fermentable sugars and their degradation product, i.e. 5-hydroxymethylfurfural (5-HMF), which is known valuable platform chemical. Further, the differences in the yields of IL-obtainable carbohydrates between these species were studied. The highest sugar yields were obtained to glucose in the case of spruce and arabinose in the case of pine sapwood, 12.07 and 7.72 mmol/L, respectively. The highest 5-HMF yield was obtained for spruce heartwood (9.18 mmol/L) with longer treatment time, such as 100h. However, regarding woody biomass, the present work was focused more on the study and analysis of the IL-containing liquid part, wood hydrolysate, after IL-treatment aiming to answer the analysis challenges related to this fraction. (C) 2016 Elsevier B.V. All rights reserved.