| Injection of air into the headspace improves fermentation of phosphoric acid pretreated sugarcane bagasse by Escherichia coli MM170. | |
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MedLine Citation:
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PMID: 21531547 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Microaeration (injecting air into the headspace) improved the fermentation of hemicellulose hydrolysates obtained from the phosphoric acid pretreatment of sugarcane bagasse at 170°C for 10min. In addition, with 10% slurries of phosphoric acid pretreated bagasse (180°C, 10min), air injection into the headspace promoted xylose utilization and increased ethanol yields from 0.16 to 0.20g ethanol/g bagasse dry weight using a liquefaction plus simultaneous saccharification and co-fermentation process (L+SScF). This process was scaled up to 80L using slurries of acid pretreated bagasse (96h incubation; 0.6L of air/min into the headspace) with ethanol yields of 312-347L (82-92gal) per tonne (dry matter), corresponding to 0.25 and 0.27g/g bagasse (dry weight). Injection of small amounts of air into the headspace may provide a convenient alternative to subsurface sparging that avoids problems of foaming, sparger hygiene, flotation of particulates, and phase separation. |
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Authors:
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I U Nieves; C C Geddes; M T Mullinnix; R W Hoffman; Z Tong; E Castro; K T Shanmugam; L O Ingram |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-15 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-5-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier Ltd. |
Affiliation:
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Department of Microbiology & Cell Science, University of Florida, Box 110700, Gainesville, FL 32611, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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