Degradation of h-acid by free and immobilized cells of Alcaligenes latus
Braz. j. microbiol
; Braz. j. microbiol;41(4): 931-945, Oct.-Dec. 2010. graf
Article
em En
| LILACS
| ID: lil-595734
Biblioteca responsável:
BR1.1
ABSTRACT
Alcaligenes latus, isolated from industrial effluent, was able to grow in mineral salts medium with 50 ppm (0.15 mM) of H-acid as a sole source of carbon. Immobilization of Alcaligenes latus in Ca-alginate and polyurethane foam resulted in cells embedded in the matrices. When free cells and immobilized cells were used for biodegradation studies at concentration ranging from 100 ppm (0.3 mM) to 500 ppm (1.15 mM) degradation rate was enhanced with immobilized cells. Cells immobilized in polyurethane foam showed 100 percent degradation up to 350 ppm (1.05 mM) and 57 percent degradation at 500 ppm (1.5 mM). Degradation rate of Ca-alginate immobilized cells was less as compared to that of polyurethane foam immobilized cells. With Ca-alginate immobilized cells 100 percent degradation was recorded up to 200 ppm (0.6 mM) of H-acid and only 33 percent degradation was recorded at 500 ppm (1.5 mM) of H-acid. Spectral analysis of the products after H-acid utilization showed that the spent medium did not contain any aromatic compounds indicating H-acid degradation by A. latus.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Idioma:
En
Revista:
Braz. j. microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Índia
País de publicação:
Brasil