Short time ionic liquids pretreatment on lignocellulosic biomass to enhance enzymatic saccharification
Short time ionic liquids pretreatment on lignocellulosic biomass to enhance enzymatic saccharification
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DOI：
10.1016/j.biortech.2011.10.003
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发表时间：
2012-01-01
影响因子：
11.4
通讯作者：
Kamiya, Noriho
中科院分区：
文献类型：
--
作者：
Uju;Shoda, Yasuhiro;Kamiya, Noriho
研究了1-丁基-3-甲基吡啶氯化物[Bmpy][Cl]作为木质纤维生物质、蔗渣和桉木的前处理溶剂的潜力。再生生物质的产率在35%~96%之间，不同的预处理时间、离子液体(IL)类型和生物量不同。与未处理的生物质相比，用[Bmpy][Cl]对生物质进行预处理后，纤维素转化率最高可提高8倍。在较短的时间内(即10min)，[Bmpy][Cl]的初始酶促糖化率优于1-乙基-3-甲基咪唑乙酸乙酯([EMIM][OAc])。[EMIM][OAc]处理的反应速率增加是因为纤维素结晶度降低。相反，用[Bmpy][Cl]处理的生物质的结晶度指数没有明显的下降，使用这种IL提高了酶促糖化速率，这可能是由于降低了生物质中纤维素的聚合度。(C)爱思唯尔有限公司出版的2011年。
The potential of 1-buthyl-3-methylpyridinium chloride, [Bmpy][Cl], as a pretreatment solvent for lignocellulosic biomasses, Bagasse and Eucalyptus, was investigated. The yields of regenerated biomasses ranged between 35% and 96%, and varied according to the pretreatment time, type of ionic liquid (IL) and biomass. The pretreatment of the biomass with [Bmpy][Cl] resulted in up to 8-fold increase in the cellulose conversion when compared with the untreated biomass. For a short pretreatment period (i.e., 10 min), [Bmpy][Cl] showed better performance than 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]) with respect to the initial enzymatic saccharification rates. The increase in the reaction rates with [Emim][OAc] treatment was because of a reduction in the cellulose crystallinity. In contrast, a decrease in the crystallinity index was not clearly observed for the biomass pretreated with [Bmpy][Cl], and the enhancement of the enzymatic saccharification rates using this IL is presumably due to a reduction in the degree of polymerization of cellulose in the biomass. (C) 2011 Published by Elsevier Ltd.