title: Biorefinery of corn cob for microbial lipid and bio-ethanol production: An environmental friendly process.
abstract: Microbial lipid and bio-ethanol were co-generated by an integrated process using corn cob bagasse as raw material. After pretreatment, the acid hydrolysate was used as substrate for microbial lipid fermentation, while the solid residue was further enzymatic hydrolysis for bio-ethanol production. The effect of acid loading and pretreatment time on microbial lipid and ethanol production were evaluated. Under the optimized condition for ethanol production, ∼131.3g of ethanol and ∼11.5g of microbial lipid were co-generated from 1kg raw material. On this condition, ∼71.6% of the overall fermentable sugars in corn cob bagasse could be converted into valuable products. At the same time, at least 33% of the initial COD in the acid hydrolysate was depredated.
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Di
authors.initials: D
authors.lastname: Cai
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Zhongshi
authors.initials: Z
authors.lastname: Dong
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Changjing
authors.initials: C
authors.lastname: Chen
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: qinpeiyong@tsinghua.org.cn.
authors.forename: Peiyong
authors.initials: P
authors.lastname: Qin
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Wang
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Tianwei
authors.initials: T
authors.lastname: Tan
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D002482:Cellulose / Q000737:chemistry; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects; D055772:Green Chemistry Technology / Q000379:methods*; D006868:Hydrolysis; D008055:Lipids / Q000096:biosynthesis*; D013464:Sulfuric Acids / Q000494:pharmacology; D013997:Time Factors; D003313:Zea mays / Q000737:chemistry*
chemical_list: D008055:Lipids; D013464:Sulfuric Acids; D000431:Ethanol; D002482:Cellulose; C027433:bagasse; C033158:sulfuric acid
keywords: Corn cob bagasse; Fermentation process; Rhodotorula glutinis; Saccharomyces cerevisiae