title: Organic amine catalytic organosolv pretreatment of corn stover for enzymatic saccharification and high-quality lignin.
abstract: A novel and efficient organic amine and organosolv synergetic pretreatment method was developed to overcome the recalcitrance of lignocellulose to produce fermentable sugars and high-quality salt-free lignin. After optimization of the process parameters, a delignification of 81.7% and total sugar yield of 83.2% (87.1% glucose, 75.4% xylose) could be obtained using n-propylamine (10mmol/g, biomass) as a catalyst and aqueous ethanol (60%, v/v) as a solvent. The susceptibility of the substrates to enzymatic digestibility was explained by their physical and chemical characteristics. The physical structure of extracted lignin showed higher β-aryl ether bonds content and functionalities, offering the potential for further downstream upgrading. The role of organic amine catalyst and a synergistic mechanism is proposed for the present system.
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China.
authors.forename: Chenglun
authors.initials: C
authors.lastname: Tang
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China.
authors.forename: Junqiang
authors.initials: J
authors.lastname: Shan
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China.
authors.forename: Yanjun
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China.
authors.forename: Lingxia
authors.initials: L
authors.lastname: Zhong
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Shen
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China; Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China. Electronic address: zhucj@njtech.edu.cn.
authors.forename: Chenjie
authors.initials: C
authors.lastname: Zhu
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China; National Engineering Technique Research Center for Biotechnology, Nanjing, China; Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China.
authors.forename: Hanjie
authors.initials: H
authors.lastname: Ying
mesh_terms: D000588:Amines / Q000494:pharmacology*; D018533:Biomass; D002384:Catalysis / Q000187:drug effects; D002480:Cellulase / Q000737:chemistry / Q000378:metabolism; D000431:Ethanol / Q000737:chemistry; D005947:Glucose / Q000737:chemistry / Q000378:metabolism; D006868:Hydrolysis / Q000187:drug effects; D008031:Lignin / Q000737:chemistry / Q000378:metabolism*; D009844:Oligosaccharides / Q000737:chemistry / Q000378:metabolism*; D012997:Solvents; D014994:Xylose / Q000737:chemistry / Q000378:metabolism; D003313:Zea mays / Q000737:chemistry* / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000588:Amines; D009844:Oligosaccharides; D012997:Solvents; C036909:lignocellulose; D000431:Ethanol; D008031:Lignin; D014994:Xylose; D002480:Cellulase; D005947:Glucose
keywords: Corn stover; Enzymatic hydrolysis; Lignin; Organic amine; Organosolv pretreatment