title: Protic acid resin enhanced 1-butyl-3-methylimidazolium chloride pretreatment of Arundo donax Linn.
abstract: To improve the cellulose digestibility of energy crop Arudo donax Linn. with cost-efficient, a novel pretreatment of protic acid resin Amberlyst 35DRY catalyzed inexpensive ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) was developed in this work. The pretreatment was performed at 160°C with [C4mim]Cl for 1.5h, followed by Amberlyst 35DRY catalyzed at 90°C for 1h. The IL-Amberlyst pretreatment was demonstrated to be effective, evidenced by the reduction in cellulose crystallinity (31.4%) and increased porosity caused by extensive swelling the undissolved biomass and partial depolymerization of the longer cellulose chain of the dissolved biomass by Amberlyst. Consequently, a higher glucose yield (92.8%) was obtained than for the single [C4mim]Cl pretreatment (42.8%) at an enzyme loading of 20 FPU/g substrate. Overall, the enhanced pretreatment was competitive by using inexpensive and recyclable IL-Amberlyst 35DRY pretreated system with shorter processing time and reduced enzyme usage.
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
authors.forename: Tingting
authors.initials: T
authors.lastname: You
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
authors.forename: Liming
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
authors.forename: Sukun
authors.initials: S
authors.lastname: Zhou
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China. Electronic address: xfx315@bjfu.edu.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Xu
mesh_terms: D000837:Anion Exchange Resins / Q000494:pharmacology*; D018533:Biomass; D002480:Cellulase / Q000378:metabolism; D003460:Crystallization; D006868:Hydrolysis / Q000187:drug effects; D007093:Imidazoles / Q000494:pharmacology*; D006109:Poaceae / Q000187:drug effects*
chemical_list: D000837:Anion Exchange Resins; D007093:Imidazoles; C502841:1-butyl-3-methylimidazolium chloride; D002480:Cellulase
keywords: Arundo donax Linn.; Cost-efficient; Depolymerization; Enzymatic hydrolysis; IL-Amberlyst pretreatment