title: An alternative feedstock of corn meal for industrial fuel ethanol production: delignified corncob residue.
abstract: Delignified corncob residue is an industrial solid waste from xylose production using corncob as feedstock. In this study, delignified corncob residue was used as the feedstock of ethanol production by simultaneous saccharification and fermentation (SSF) and the optimal fermentation performance was investigated under various operation conditions. The ethanol titer and yield reached 75.07 g/L and 89.38%, respectively, using a regular industrial yeast strain at moderate cellulase dosage and high solids loading. A uniform SSF temperature of 37°C at both prehydrolysis and SSF stages was tested. The fermentation performance and cost of delignified corncob residue and corn meal was compared as feedstock of ethanol fermentation. The result shows that the delignified corncob residue is competitive to corn meal as ethanol production feedstock. The study gives a typical case to demonstrate the potential of intensively processed lignocellulose as the alternative feedstock of corn meal for industrial fuel ethanol production.
authors.affiliation: State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Lei
authors.affiliation: State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Tsinghua University, Beijing 10084, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Shandong Longlive Biotechnology Co., High-Tech Development Zone, Yucheng, Shandong 251200, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Xiao
authors.affiliation: State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China. Electronic address: jbao@ecust.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Bao
mesh_terms: D001709:Biotechnology / Q000379:methods*; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D007221:Industry; D008031:Lignin / Q000302:isolation & purification*; D012441:Saccharomyces cerevisiae / Q000378:metabolism; D014866:Waste Products; D003313:Zea mays / Q000378:metabolism*
chemical_list: D014866:Waste Products; D000431:Ethanol; D008031:Lignin
keywords: Corn meal; Cost estimation; Delignified corncob residue; Ethanol; Simultaneous saccharification and fermentation (SSF)