Physiology of exopolysaccharide production by Azotobacter vinelandii from 4-hydroxybenzoic acid.
J Ind Microbiol Biotechnol
; 29(3): 129-33, 2002 Sep.
Article
em En
| MEDLINE
| ID: mdl-12242634
ABSTRACT
The relationship between exopolysaccharide (EPS) production by Azotobacter vinelandii ATCC 12837 from 4-hydroxybenzoic acid as sole carbon source and other physiological parameters was investigated. In relation to growth, Azotobacter needed more time in 4-hydroxybenzoic acid to reach levels of biomass similar to those obtained when sugars were used, although the phenolic compound led to a more extensive exponential phase. The encystment process was initiated after cells had grown for 24 h, in which small amounts of EPS were synthesized and poly-beta-hydroxybutyrate (PHB) accumulation began. Both polymers, EPS and PHB, showed a similar evolution with time, as well as the formation of cysts, which points out the existence of a relation between these parameters. This was corroborated by a statistical study, in which significant correlations (P<0.05) were observed when each parameter was compared to the two others.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Parabenos
/
Polissacarídeos Bacterianos
/
Azotobacter vinelandii
Idioma:
En
Revista:
J Ind Microbiol Biotechnol
Assunto da revista:
BIOTECNOLOGIA
/
MICROBIOLOGIA
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Espanha
País de publicação:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
/
GERMANY