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- Title
Exopolysaccharide and extracellular metabolite production by Lactobacillus delbrueckii subsp. bulgaricus, grown on lactose in continuous culture.
- Authors
Welman, Alan; Maddox, Ian; Archer, Richard
- Abstract
Lactobacillus delbrueckii subsp. bulgaricus NCFB 2483, when grown on lactose in continuous culture, showed increasing specific yields and volumetric productivities of exopolysaccharide (EPS) with increasing dilution rate. Specific and volumetric productivities of lactate and galactose, as extracellular metabolites, increased in response to the incremental changes in the dilution rate up to 0.4 h-1. Elevated Yp/s values determined for EPS (0.025 g EPS ⋅ g lactose-1) at the dilution rates of 0.3 h-1–0.4 h-1, relative to those determined at lower dilution rates, suggest a diversion of carbon flux towards EPS being associated with the higher rates of growth.
- Subjects
CONTINUOUS culture (Microbiology); MICROBIAL exopolysaccharides; METABOLITES; LACTOBACILLUS delbrueckii; LACTOSE; BACTERIAL growth
- Publication
Biotechnology Letters, 2003, Vol 25, Issue 18, p1515
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1023/A:1025432003915