| Enzymatic hydrolysis and simultaneous saccharification and fermentation of alkali/peracetic acid-pretreated sugarcane bagasse for ethanol and 2,3-butanediol production. | |
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MedLine Citation:
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PMID: 22112569 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The enzymatic digestibility of alkali/peracetic acid (PAA)-pretreated bagasse was systematically investigated. The effects of initial solid consistency, cellulase loading and addition of supplemental β-glucosidase on the enzymatic conversion of glycan were studied. It was found the alkali-PAA pulp showed excellent enzymatic digestibility. The enzymatic glycan conversion could reach about 80% after 24h incubation when enzyme loading was 10FPU/g solid. Simultaneous saccharification and fermentation (SSF) results indicated that the pulp could be well converted to ethanol. Compared with dilute acid pretreated bagasse (DAPB), alkali-PAA pulp could obtain much higher ethanol and xylose concentrations. The fermentation broth still showed some cellulase activity so that the fed pulp could be further converted to sugars and ethanol. After the second batch SSF, the fermentation broth of alkali-PAA pulp still kept about 50% of initial cellulase activity. However, only 21% of initial cellulase activity was kept in the fermentation broth of DAPB. The xylose syrup obtained in SSF of alkali-PAA pulp could be well converted to 2,3-butanediol by Klebsiella pneumoniae CGMCC 1.9131. |
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Authors:
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Xuebing Zhao; Yuanquan Song; Dehua Liu |
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Publication Detail:
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Type: Journal Article Date: 2011-07-19 |
Journal Detail:
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Title: Enzyme and microbial technology Volume: 49 ISSN: 0141-0229 ISO Abbreviation: Enzyme Microb. Technol. Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-11-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003761 Medline TA: Enzyme Microb Technol Country: United States |
Other Details:
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Languages: eng Pagination: 413-9 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Elsevier Inc. All rights reserved. |
Affiliation:
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Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 10084, PR China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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