Production of Exopolysaccharides by Strains of Streptococcus thermophilus

Full text for this resource is not available from the Research Repository.

Purwandari, Umi and Vasiljevic, Todor (2010) Production of Exopolysaccharides by Strains of Streptococcus thermophilus. Microbiology Indonesia, 4 (1). pp. 39-43. ISSN 1978-3477 (print) 2087-8575 (online)


Two strains of Streptococcus thermophilus producing capsular and capsular-ropy exopolysaccharides (EPS) were examined for their growth and EPS production in M17 medium supplemented with glucose, galactose or lactose and incubated at 30, 37 or 42°C for 24 hours. Growth parameters (viable cells, OD, lactate production, pH) and EPS production were determined. Flow behavior of the EPS dispersions was assessed as a function of concentration and temperature. Culture growth during incubation was affected by types of sugar, temperature and time. Growth was enhanced by glucose, lactose and higher incubation temperature. EPS concentration in the medium was greater in the presence of glucose and galactose. Despite the restricted growth conditions, the capsular strain produced comparable levels of EPS to the capsular-ropy strain even under sub-optimal incubation temperature.

Item type Article
Official URL
Subjects Historical > Faculty/School/Research Centre/Department > School of Biomedical and Health Sciences
Historical > FOR Classification > 0908 Food Sciences
Historical > SEO Classification > 8602 Dairy Products
Keywords ResPubID19806, Streptococcus thermophilus, exopolysaccharides, growth conditions
Download/View statistics View download statistics for this item

Search Google Scholar

Repository staff login