玉米芯的深共晶溶剂预处理及后续糖化。
Deep eutectic solvent pretreatment and subsequent saccharification of corncob.
机构信息
Department of Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, ON N6A 3K7, Canada; Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale - Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy.
Department of Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, ON N6A 3K7, Canada.
出版信息
Bioresour Technol. 2015 Sep;192:31-6. doi: 10.1016/j.biortech.2015.05.053. Epub 2015 May 20.
Ionic liquid (ILs) pretreatment of lignocellulosic biomass has attracted broad scientific interest, despite high costs, possible toxicity and energy intensive recycling. An alternative group of ionic solvents with similar physicochemical properties are deep eutectic solvents (DESs). Corncob residues were pretreated with three different DES systems: choline chloride and glycerol, choline chloride and imidazole, choline chloride and urea. The pretreated biomass was characterised in terms of lignin content, sugars concentration, enzymatic digestibility and crystallinity index. A reduction of lignin and hemicellulose content resulted in increased crystallinity of the pretreated biomass while the crystallinity of the cellulose fraction could be reduced, depending on DES system and operating conditions. The subsequent enzymatic saccharification was enhanced in terms of rate and extent. A total of 41 g fermentable sugars (27 g glucose and 14 g xylose) could be recovered from 100g corncob, representing 76% (86% and 63%) of the initially available carbohydrates.
离子液体 (ILs) 预处理木质纤维素生物质引起了广泛的科学关注，尽管成本高、可能有毒性和能源密集型的回收。具有相似物理化学性质的另一组离子溶剂是深共晶溶剂 (DES)。用三种不同的 DES 体系：氯化胆碱和甘油、氯化胆碱和咪唑、氯化胆碱和尿素对玉米芯残渣进行预处理。预处理后的生物质在木质素含量、糖浓度、酶可消化性和结晶度指数方面进行了表征。预处理生物质的木质素和半纤维素含量减少导致结晶度增加，而纤维素部分的结晶度可以根据 DES 体系和操作条件降低。随后的酶解糖化在速率和程度上都得到了提高。从 100g 玉米芯中可以回收 41g 可发酵糖（27g 葡萄糖和 14g 木糖），占初始可利用碳水化合物的 76%（86%和 63%）。
Zotero 插件