title: Improved efficiency of separate hexose and pentose fermentation from steam-exploded corn stalk for butanol production using Clostridium beijerinckii.
abstract: Water extract of steam-exploded corn stalk (SECS) was detoxified and used as feed for acetone-butanol-ethanol (ABE) fermentation using Clostridium beijerinckii. Utilization of water extract improved the total ABE yield (g ABE/g dry SECS). Separated fermentation showed higher fermentability (0.078 g ABE/g dry SECS) over typical fermentation (0.058 g ABE/g dry SECS). Furthermore, the final ABE yields (g ABE/g utilized sugar) from water extract neutralized by Ca(OH)(2), NaOH, and Na(2)SO(3) were 0.16, 0.1 and 0.07, respectively, suggesting that Ca(OH)(2) had the best detoxification effect.
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qindao, Shandong, China. muxd@qibebt.ac.cn
authors.forename: Xindong
authors.initials: X
authors.lastname: Mu
authors.forename: Wei
authors.initials: W
authors.lastname: Sun
authors.forename: Chao
authors.initials: C
authors.lastname: Liu
authors.forename: Haisong
authors.initials: H
authors.lastname: Wang
mesh_terms: D000096:Acetone / Q000032:analysis / Q000378:metabolism; D056804:Biofuels; D018533:Biomass; D000440:Butanols / Q000032:analysis / Q000378:metabolism*; D002126:Calcium Hydroxide; D046970:Clostridium beijerinckii / Q000378:metabolism*; D000431:Ethanol / Q000032:analysis / Q000378:metabolism; D005285:Fermentation; D005947:Glucose / Q000032:analysis / Q000378:metabolism*; D007218:Industrial Microbiology; D018547:Plant Stems / Q000737:chemistry; D012972:Sodium Hydroxide; D013227:Steam; D013447:Sulfites; D014994:Xylose / Q000032:analysis / Q000378:metabolism*; D003313:Zea mays / Q000737:chemistry / Q000378:metabolism*
chemical_list: D056804:Biofuels; D000440:Butanols; D013227:Steam; D013447:Sulfites; D000096:Acetone; D000431:Ethanol; D012972:Sodium Hydroxide; D014994:Xylose; D005947:Glucose; D002126:Calcium Hydroxide; C025026:sodium sulfite