title: Optimization and evaluation of alkaline potassium permanganate pretreatment of corncob.
abstract: Alkaline potassium permanganate solution (APP) was applied to the pretreatment of corncob with a simple and effective optimization of APP concentration, reaction time, temperature and solid to liquid ratio (SLR). The optimized pretreatment conditions were at 2% (w/v) potassium permanganate with SLR of 1:10 treating for 6h at 50°C. This simple one-step treatment resulted in significant 94.56% of the cellulose and 81.47% of the hemicellulose recoveries and 46.79% of the lignin removal of corncob. The reducing sugar in the hydrolysate from APP-pretreated corncob was 8.39g/L after 12h enzymatic hydrolysis, which was 1.44 and 1.29 folds higher than those from raw and acid pretreated corncobs. Physical characteristics, crystallinity and structure of the pretreated corncob were analyzed and assessed by SEM, XRD and FTIR. The APP pretreatment process was novel and enhanced enzymatic hydrolysis of lignocellulose by affecting composition and structural features.
authors.affiliation: Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Industrial Microbiology Key Laboratory, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Ma
authors.affiliation: Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Industrial Microbiology Key Laboratory, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Youzhi
authors.initials: Y
authors.lastname: Cui
authors.affiliation: Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Industrial Microbiology Key Laboratory, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Rui
authors.initials: R
authors.lastname: Cai
authors.affiliation: Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Industrial Microbiology Key Laboratory, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Xueqiang
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Industrial Microbiology Key Laboratory, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Cuiying
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Industrial Microbiology Key Laboratory, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China. Electronic address: xdg@tust.edu.cn.
authors.forename: Dongguang
authors.initials: D
authors.lastname: Xiao
mesh_terms: D002482:Cellulose / Q000737:chemistry; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011134:Polysaccharides / Q000737:chemistry; D011196:Potassium Permanganate / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014961:X-Ray Diffraction; D003313:Zea mays / Q000737:chemistry*
chemical_list: D011134:Polysaccharides; D011196:Potassium Permanganate; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin
keywords: Alkaline potassium permanganate; Corncob; Physical characterization; Pretreatment; Reducing sugars