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1 Laboratoire de Génétique Microbienne, lnstitut de Recherche en Biologie Appliquée, Université de Caen, 14032 Caen, Cedex, France
An industrial strain of Streptococcus salivarius ssp. thermophilus, grown in a semisynthetic medium, produces EPS during the stationary phase of growth. Temperatures or sugars that decrease growth rate increase polymer synthesis. Factorial experiments showed that the nature of the sugar, temperature, and initial pH interfere with polymer production. At optimal growth rate, polysaccharide production is dependent on lactose.
Key Words: exopolysaccharide Streptococcus salivarius ssp. thermophilus lactose sucrose
Submitted on March 4, 1993
Accepted on October 18, 1993
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