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Ethanol production from residual wood chips of cellulose industry: acid pretreatment investigation, hemicellulosic hydrolysate fermentation, and remaining solid fraction fermentation by SSF process.
Appl Biochem Biotechnol. 2011 Apr; 163(7):928-36.AB

Abstract

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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Publisher Full Text (DOI)

Authors+Show Affiliations

Silva NL
Biochemical Engineering Department, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21945-970, Brazil.
Betancur GJ
No affiliation info available
Vasquez MP
No affiliation info available
Gomes Ede B
No affiliation info available
Pereira N
No affiliation info available

MeSH

BiocatalysisBiofuelsBioreactorsBiotechnologyCelluloseEthanolFermentationHydrolysisIndustrial WasteLigninPichiaPolysaccharidesSaccharomyces cerevisiaeSulfuric AcidsWoodXylose

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20890779

Citation

Silva, Neumara Luci Conceição, et al. "Ethanol Production From Residual Wood Chips of Cellulose Industry: Acid Pretreatment Investigation, Hemicellulosic Hydrolysate Fermentation, and Remaining Solid Fraction Fermentation By SSF Process." Applied Biochemistry and Biotechnology, vol. 163, no. 7, 2011, pp. 928-36.
Silva NL, Betancur GJ, Vasquez MP, et al. Ethanol production from residual wood chips of cellulose industry: acid pretreatment investigation, hemicellulosic hydrolysate fermentation, and remaining solid fraction fermentation by SSF process. Appl Biochem Biotechnol. 2011;163(7):928-36.
Silva, N. L., Betancur, G. J., Vasquez, M. P., Gomes, E. d. e. . B., & Pereira, N. (2011). Ethanol production from residual wood chips of cellulose industry: acid pretreatment investigation, hemicellulosic hydrolysate fermentation, and remaining solid fraction fermentation by SSF process. Applied Biochemistry and Biotechnology, 163(7), 928-36. https://doi.org/10.1007/s12010-010-9096-8
Silva NL, et al. Ethanol Production From Residual Wood Chips of Cellulose Industry: Acid Pretreatment Investigation, Hemicellulosic Hydrolysate Fermentation, and Remaining Solid Fraction Fermentation By SSF Process. Appl Biochem Biotechnol. 2011;163(7):928-36. PubMed PMID: 20890779.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ethanol production from residual wood chips of cellulose industry: acid pretreatment investigation, hemicellulosic hydrolysate fermentation, and remaining solid fraction fermentation by SSF process. AU - Silva,Neumara Luci Conceição, AU - Betancur,Gabriel Jaime Vargas, AU - Vasquez,Mariana Peñuela, AU - Gomes,Edelvio de Barros, AU - Pereira,Nei,Jr Y1 - 2010/10/03/ PY - 2009/05/19/received PY - 2010/09/20/accepted PY - 2010/10/5/entrez PY - 2010/10/5/pubmed PY - 2011/6/28/medline SP - 928 EP - 36 JF - Applied biochemistry and biotechnology JO - Appl Biochem Biotechnol VL - 163 IS - 7 N2 - 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. SN - 1559-0291 UR - https://www.unboundmedicine.com/medline/citation/20890779/Ethanol_production_from_residual_wood_chips_of_cellulose_industry:_acid_pretreatment_investigation_hemicellulosic_hydrolysate_fermentation_and_remaining_solid_fraction_fermentation_by_SSF_process_ L2 - https://dx.doi.org/10.1007/s12010-010-9096-8 DB - PRIME DP - Unbound Medicine ER -
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