| Ethanol Production from Residual Wood Chips of Cellulose Industry: Acid Pretreatment Investigation, Hemicellulosic Hydrolysate Fermentation, and Remaining Solid Fraction Fermentation by SSF Process. | |
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MedLine Citation:
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PMID: 20890779 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Current research indicates the ethanol fuel production from lignocellulosic materials, such as residual wood chips from the cellulose industry, as new emerging technology. This work aimed at evaluating the ethanol production from hemicellulose of eucalyptus chips by diluted acid pretreatment and the subsequent fermentation of the generated hydrolysate by a flocculating strain of Pichia stipitis. The remaining solid fraction generated after pretreatment was subjected to enzymatic hydrolysis, which was carried out simultaneously with glucose fermentation [saccharification and fermentation (SSF) process] using a strain of Saccharomyces cerevisiae. The acid pretreatment was evaluated using a central composite design for sulfuric acid concentration (1.0-4.0 v/v) and solid to liquid ratio (1:2-1:4, grams to milliliter) as independent variables. A maximum xylose concentration of 50 g/L was obtained in the hemicellulosic hydrolysate. The fermentation of hemicellulosic hydrolysate and the SSF process were performed in bioreactors and the final ethanol concentrations of 15.3 g/L and 28.7 g/L were obtained, respectively. |
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Authors:
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Neumara Luci Conceição Silva; Gabriel Jaime Vargas Betancur; Mariana Peñuela Vasquez; Edelvio de Barros Gomes; Nei Pereira |
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Publication Detail:
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Type: Journal Article Date: 2010-10-03 |
Journal Detail:
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Title: Applied biochemistry and biotechnology Volume: 163 ISSN: 1559-0291 ISO Abbreviation: Appl. Biochem. Biotechnol. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8208561 Medline TA: Appl Biochem Biotechnol Country: United States |
Other Details:
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Languages: eng Pagination: 928-36 Citation Subset: IM |
Affiliation:
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Biochemical Engineering Department, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, 21945-970, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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