Document Detail


Simultaneous saccharification and cofermentation of peracetic acid-pretreated biomass.
MedLine Citation:
PMID:  10849783     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Previous work in our laboratories has demonstrated the effectiveness of peracetic acid for improving enzymatic digestibility of lignocellulosic materials. The use of dilute alkali solutions as a pre-pretreatment prior to peracetic acid lignin oxidation increased carbohydrate hydrolysis yields in a synergistic as opposed to additive manner. Deacetylation of xylan is easily achieved using dilute alkali solutions under mild conditions. In this article, we evaluate the effectiveness of peracetic acid combined with an alkaline pre-pretreatment through simultaneous saccharification and cofermentation (SSCF) of pretreated hybrid poplar wood and sugar cane bagasse. Respective ethanol yields of 92.8 and 91.9% of theoretical are achieved using 6% NaOH/15% peracetic acid-pretreated substrates and recombinant Zymomonas mobilis CP4/pZB5. Reduction of acetyl groups of the lignocellulosic materials is demonstrated following alkaline pre-pretreatments. Such processing may be helpful in reducing peracetic acid requirements. The influence of deacetylation is more significant in combined pretreatments using lower peracetic acid loadings.
Authors:
L C Teixeira; J C Linden; H A Schroeder
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Applied biochemistry and biotechnology     Volume:  84-86     ISSN:  0273-2289     ISO Abbreviation:  Appl. Biochem. Biotechnol.     Publication Date:  2000  
Date Detail:
Created Date:  2000-09-26     Completed Date:  2000-09-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8208561     Medline TA:  Appl Biochem Biotechnol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  111-27     Citation Subset:  IM    
Affiliation:
Department of Biotechnology, Fundação Centro Tecnológico de Minas Gerais-CETEC, Belo Horizonte, Brazil. lct@cetec.br
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MeSH Terms
Descriptor/Qualifier:
Biomass*
Cellulose / chemistry*
Fermentation
Gymnosperms
Hydrolysis
Indicators and Reagents
Kinetics
Lignin / chemistry*
Peracetic Acid
Polysaccharides / analysis
Wood*
Zymomonas / physiology
Chemical
Reg. No./Substance:
0/Indicators and Reagents; 0/Polysaccharides; 11132-73-3/lignocellulose; 79-21-0/Peracetic Acid; 9004-34-6/Cellulose; 9005-53-2/Lignin; 9006-97-7/bagasse

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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