Occurrence and expression of beta-galactosidase in dextran-producing Leuconostoc species

Authors
Holt, SM Ricciardi, EC
Citation
Sm. Holt et Ec. Ricciardi, Occurrence and expression of beta-galactosidase in dextran-producing Leuconostoc species, BIOTECH LET, 23(14), 2001, pp. 1147-1149
Citations number
10
Categorie Soggetti
Biotecnology & Applied Microbiology",Microbiology
Journal title
BIOTECHNOLOGY LETTERS
ISSN journal
01415492 → ACNP
Volume
23
Issue
14
Year of publication
2001
Pages
1147 - 1149
Database
ISI
SICI code
0141-5492(200107)23:14<1147:OAEOBI>2.0.ZU;2-P
Abstract
The occurrence and expression of beta -galactosidase among various dextran- producing Leuconostoc strains was determined. beta -Galactosidase was detec ted from four of twelve Leuconostoc strains tested. beta -Galactosidase in L. mesenteroides was induced by lactose and was repressed by glucose. Growt h curves of L. mesenteroides on lactose indicated extended lag and late gro wth phases that were shortened when the inoculum was preexposed to lactose.