title: Effect of acid pretreatment on different parts of corn stalk for second generation ethanol production.
abstract: In this study, the effects of different parts of corn stalk, including stem, leaf, flower, cob and husk on second generation ethanol production were evaluated. FTIR, XRD and SEM were performed to investigate the effect of dilute acid pretreatment. The bagasse obtained after pretreatment were further hydrolyzed by cellulase and used as the substrate for ethanol fermentation. As results, hemicelluloses fractions in different parts of corn stalk were dramatically removed and the solid fractions showed vivid compositions and crystallinities. Compared with other parts of corn stalk, the cob had higher sugar content and better enzymatic digestibility. The highest glucose yield of 94.2% and ethanol production of 24.0 g L(-1) were achieved when the cob was used as feedstock, while the glucose yield and the ethanol production were only 86.0% and 17.1 g L(-1) in the case of flower.
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Ping
authors: P
authors: Li
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Di
authors: D
authors: Cai
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Zhangfeng
authors: Z
authors: Luo
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: qinpeiyong@tsinghua.org.cn.
authors: Peiyong
authors: P
authors: Qin
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Changjing
authors: C
authors: Chen
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Yong
authors: Y
authors: Wang
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Changwei
authors: C
authors: Zhang
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Zheng
authors: Z
authors: Wang
authors: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Tianwei
authors: T
authors: Tan
mesh_terms: D001709:Biotechnology / Q000379:methods*; D050260:Carbohydrate Metabolism; D002241:Carbohydrates / Q000032:analysis; D002480:Cellulase / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D005947:Glucose / Q000378:metabolism; D006868:Hydrolysis; D008855:Microscopy, Electron, Scanning; D018515:Plant Leaves / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction; D003313:Zea mays / Q000737:chemistry* / Q000378:metabolism
chemical_list: D002241:Carbohydrates; D011134:Polysaccharides; D000431:Ethanol; C007916:hemicellulose; D002482:Cellulose; C027433:bagasse; D002480:Cellulase; D005947:Glucose
keywords: Acid pretreatment; Corn stalk; Ethanol fermentation