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Increased fermentability of enzymatically hydrolyzed steam-exploded corn stover for butanol production by removal of fermentation inhibitors
Wang, Lan; Chen, Hongzhang; Chen, HZ
2011-02-01
Source PublicationPROCESS BIOCHEMISTRY
ISSN1359-5113
Volume46Issue:2Pages:604-607
AbstractAcetone-butanol-ethanol (ABE) production from enzymatically hydrolyzed steam-exploded corn stover (SECS) by Clostridium acetobutylicum ATCC 824 was investigated in this study. Two methods to reduce fermentation inhibitors and thus increase fermentability were developed. An ABE yield of 0.15 and a productivity of 0.05 g/(L h) were obtained in the SECS hydrolysate (SECSH). This was lower compared to the yield of 0.23 and the productivity of 0.15 g/(Lh) in the control medium containing 50 g/L mixed sugars. Based on the composition analysis of SECSH, soluble lignin compounds (SLC) were found to be the main fermentation inhibitors. The ABE fermentation was inhibited when SLC exceeded to 1.77 g/L in the SECSH-based medium. In contrast, fermentation was improved when SLC was less than 0.89 g/L To reduce the SLC concentration in SECSH, activated charcoal treatment was adopted to adsorb SLC from SECSH. To reduce inhibitor generation during the hydrolysis, alkaline peroxide treatment was used to remove the lignin from SECS. Batch fermentation of the two hydrolysates treated with the above methods resulted in an ABE yield of 0.30 and a productivity of 0.17 g/(L h). This indicates that the two established methods for the removal of inhibitors can enhance the fermentability of SECS in ABE production. (C) 2010 Elsevier Ltd. All rights reserved.
KeywordSteam-exploded Corn Stover Butanol Fermentation Activated Charcoal Alkaline Peroxide Treatment Soluble Lignin Compounds
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.procbio.2010.09.027
Indexed BySCI
Language英语
WOS KeywordCLOSTRIDIUM-BEIJERINCKII ; XYLITOL PRODUCTION ; ALKALINE PEROXIDE ; DETOXIFICATION ; ACETONE ; ACID ; WOOD
WOS Research AreaBiochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Engineering
WOS SubjectBiochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Engineering, Chemical
WOS IDWOS:000287274000026
Citation statistics
Cited Times:100[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5249
Collection生化工程国家重点实验室
Corresponding AuthorChen, HZ
AffiliationChinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Lan,Chen, Hongzhang,Chen, HZ. Increased fermentability of enzymatically hydrolyzed steam-exploded corn stover for butanol production by removal of fermentation inhibitors[J]. PROCESS BIOCHEMISTRY,2011,46(2):604-607.
APA Wang, Lan,Chen, Hongzhang,&Chen, HZ.(2011).Increased fermentability of enzymatically hydrolyzed steam-exploded corn stover for butanol production by removal of fermentation inhibitors.PROCESS BIOCHEMISTRY,46(2),604-607.
MLA Wang, Lan,et al."Increased fermentability of enzymatically hydrolyzed steam-exploded corn stover for butanol production by removal of fermentation inhibitors".PROCESS BIOCHEMISTRY 46.2(2011):604-607.
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