The Development of Cement and Concrete Additive

Autor:	Benita Dair, Patrick J. Macuch, Byong-Wa Chun, Charlotte B. Porteneuve, Ara A. Jeknavorian, Debbie Wiebe
Rok vydání:	2006
Předmět:	Cement biology Bioconversion Bioengineering General Medicine Xylose Xylonic acid Applied Microbiology and Biotechnology Biochemistry Catalysis Water reducer chemistry.chemical_compound chemistry Aldonic acid biology.protein Organic chemistry Glucose oxidase Molecular Biology Biotechnology
Zdroj:	Applied Biochemistry and Biotechnology. 131:645-658
ISSN:	0273-2289
DOI:	10.1385/abab:131:1:645
Popis:	The present work attempted to utilize xylose by converting it to an aldonic acid. In the present study, xylose was converted to xylonic 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd3734152143009e0434fe75f46eac51 https://doi.org/10.1385/abab:131:1:645 Zobrazit plný text záznamu Full text from SpringerLink