title: Impact of regeneration process on the crystalline structure and enzymatic hydrolysis of cellulose obtained from ionic liquid.
abstract: The present study investigated the impact of regeneration process on the crystalline structure and enzymatic hydrolysis behaviors of microcrystalline cellulose (MCC) regenerated from ionic liquid 1-butyl-3-methylimidazolium chloride. The crystalline structures of these regenerated samples were analyzed by X-ray diffraction. Results suggested that almost amorphous cellulose was obtained by regenerating MCC in acetone (DRC-a), while partial cellulose II structure could be found in these regenerated samples from water and ethanol. Additionally, the enzymatic hydrolysis behaviors of MCC and its regenerated samples were comparatively studied. Results showed that above 90% of cellulose could be converted into glucose within 4h for DRC-a and regenerated cellulose without drying (WRC-w) as compared to that of MCC (9.7%). Therefore, the regeneration process could significantly influence the crystallinity and digestibility of cellulose.
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Xuefei
authors.initials: X
authors.lastname: Cao
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Xinwen
authors.initials: X
authors.lastname: Peng
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
authors.forename: Shaoni
authors.initials: S
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Linxin
authors.initials: L
authors.lastname: Zhong
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Sha
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: lxzhong0611@scut.edu.cn.
authors.forename: Fachuang
authors.initials: F
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
authors.forename: Runcang
authors.initials: R
authors.lastname: Sun
mesh_terms: D001234:Aspergillus niger / Q000201:enzymology; D002480:Cellulase / Q000378:metabolism; D002482:Cellulose / Q000737:chemistry* / Q000378:metabolism*; D006868:Hydrolysis; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D014242:Trichoderma / Q000201:enzymology; D014961:X-Ray Diffraction; D001617:beta-Glucosidase / Q000378:metabolism
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; C502841:1-butyl-3-methylimidazolium chloride; D002482:Cellulose; D001617:beta-Glucosidase; D002480:Cellulase; C109691:microcrystalline cellulose
keywords: Crystallinity; Enzymatic hydrolysis; Microcrystalline cellulose; Regeneration