Document Detail


The development of cement and concrete additive: based on xylonic acid derived via bioconversion of xylose.
MedLine Citation:
PMID:  18563642     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present work attempted to utilize xylose by converting it to an aldonic acid. In the present study, xylose was converted to xyloni acid by using commercial glucose oxidase enzyme, palladium catalysis, and microbial bioconversion. The enzyme conversion was successfully done using a commercial glucose oxidase. The microbial conversion with Gluconobactor oxydans proceeded even with the presence of a large amount of lignosulfonate. Thus obtained xylonic acid products were evaluated as a cement dispersing agent in cement and concrete tests. It was found that xylonic acid is approximately twice as effective as lignosulfonate. Xylonic acid can be effectively utilized in concrete water reducer application.
Authors:
Byon-Wa Chun; Benita Dair; Patrick J Macuch; Debbie Wiebe; Charloote Porteneuve; Ara Jeknavorian
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied biochemistry and biotechnology     Volume:  131     ISSN:  1559-0291     ISO Abbreviation:  Appl. Biochem. Biotechnol.     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2008-06-19     Completed Date:  2008-10-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208561     Medline TA:  Appl Biochem Biotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  645-58     Citation Subset:  IM    
Affiliation:
Grace Performance Chemicals, W.R. Grace & Co., 62 Whittemore Avenue, Cambridge, MA 02140, USA. byong-wa.chun@grace.com
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MeSH Terms
Descriptor/Qualifier:
Acids / chemistry*
Biotransformation
Construction Materials / analysis*
Gluconobacter oxydans / metabolism*
Glucose Oxidase / chemistry*
Materials Testing
Wood / microbiology*
Xylose / chemistry*,  metabolism*
Chemical
Reg. No./Substance:
0/Acids; 0/Xylose; EC 1.1.3.4/Glucose Oxidase

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


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