Influence of different carbon sources on exopolysaccharide production by Lactobacillus delbrueckii subsp bulgaricus (B3, G12) and Streptococcus thermophilus (W22)

Yüksekdağ Z., Aslım B.

BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY, vol.51, pp.581-585, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 51
  • Publication Date: 2008
  • Doi Number: 10.1590/s1516-89132008000300019
  • Journal Name: BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.581-585
  • Keywords: Lactobacillus delbrueckii subsp bulgaricus, Streptococcus thermophilus, exopolysaccharide production, carbon sources, LACTIC-ACID BACTERIA, DNA RESTRICTION ANALYSIS, EXTRACELLULAR POLYSACCHARIDE, STARTER CULTURES, FERMENTED MILKS, NCFB 2772, CREMORIS, FRUCTOSE, GLUCOSE, YIELD
  • Gazi University Affiliated: Yes

Abstract

Exopolysaccharides (EPSs) production was studied by Lactobacillus delbrueckii subsp. bulgaricus (B3, G12) and Streptococcus thermophilus (W22) in the medium containing various carbon sources (glucose, fructose, sucrose or lactose). For all the strains, glucose was the most efficient carbon source and B3, G12 and W22 strains produced 211, 175 and 120 EPS mg/L respectively. Also, the influence of different concentrations of glucose (5,10,15,20,25,30 g/L) on EPS production and growth was studied. The results indicated that EPS production and growth were stimulated by the high glucose concentration (30 g/L).