Influence of bile on beta-galactosidase activity and cell viability of Lactobacillus reuteri when subjected to freeze-drying.
J Dairy Sci
; 80(9): 1955-8, 1997 Sep.
Article
em En
| MEDLINE
| ID: mdl-9313134
The effect of bile on beta-galactosidase activity and cell viability was investigated using two strains of Lactobacillus reuteri that were subjected to freeze-drying. In the presence of 0.15% oxgall, beta-galactosidase activity of the whole cells was significantly increased. After lyophilization, the cultures that had been treated with oxgall showed a low survival rate without changes in beta-galactosidase activity. The poor resistance of the cells to damage from freeze-drying might be related to the presence of membranous structures containing simple folds and buds of the cell membrane, as was observed by transmission electron microscopy.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bile
/
Beta-Galactosidase
/
Liofilização
/
Lactobacillus
Idioma:
En
Revista:
J Dairy Sci
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Estados Unidos