Cholinium carboxylate ionic liquids for pretreatment of lignocellulosic materials to enhance subsequent enzymatic saccharification

被引：53

作者：

Ninomiya, Kazuaki ^{[1
]}

Yamauchi, Takashi ^{[2
]}

Kobayashi, Masafumi ^{[2
]}

Ogino, Chiaki ^{[3
]}

Shimizu, Nobuaki ^{[1
]}

Takahashi, Kenji ^{[2
]}

机构：

[1] Kanazawa Univ, Inst Nat & Environm Technol, Kanazawa, Ishikawa 9201192, Japan

[2] Kanazawa Univ, Grad Sch Nat Sci & Technol, Div Mat Engn, Kanazawa, Ishikawa 9201192, Japan

[3] Kobe Univ, Grad Sch Engn, Dept Chem Sci & Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

BIOCHEMICAL ENGINEERING JOURNAL | 2013年 / 71卷

基金：

日本科学技术振兴机构;

关键词：

Ionic liquid; Pretreatment; Lignin; Cellulose; Cellulase; Yeast; ROOM-TEMPERATURE; BIOMASS; WOOD; BIOMATERIALS; DISSOLUTION; HYDROLYSIS; IMPACT; ACID;

D O I：

10.1016/j.bej.2012.11.012

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The present study is the first report demonstrating that ionic liquids consisting of cholinium cations and linear carboxylate anions ([Ch][CA] ILs) can be used for pretreatment of lignocellulosic materials to enhance subsequent enzymatic saccharification. Six variants of [Ch][CA] ILs were systematically prepared by combining cholinium cations with linear monocarboxylate anions ([CnH2n+1-COO](-), n = 0-2) or dicarboxylate anions ([HOOC-CnH2n+1-COO](-), n = 0-2). These [Ch][CA] ILs were analyzed for their toxicity to yeast cell growth and their ability to pretreat kenaf powder for subsequent enzymatic saccharification. When assayed against yeast growth, the EC50 for choline acetate ([Ch][OAc]) was 510 mM, almost one order of magnitude higher than that for 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]). The cellulose saccharification ratio after pretreatment at 110 degrees C for 16h with [Ch][OAc] (100.6%) was almost comparable with that after pretreatment with [Emirn][OAc]. Therefore, [Ch][OAc] is a biocompatible alternative to [Emim][OAc] for lignocellulosic material pretreatment. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：25 / 29

页数：5

共 26 条

[11] Comparison of dilute acid and ionic liquid pretreatment of switchgrass: Biomass recalcitrance, delignification and enzymatic saccharification [J].