Metabolically improved exopolysaccharide production by Streptococcus thermophilus and its influence on the rheological properties of fermented milk

Malin Svensson; Elisabet Waak; Ulla Svensson; Peter Rådström

doi:10.1128/AEM.71.10.6398-6400.2005

Metabolically improved exopolysaccharide production by Streptococcus thermophilus and its influence on the rheological properties of fermented milk

Appl Environ Microbiol. 2005 Oct;71(10):6398-400. doi: 10.1128/AEM.71.10.6398-6400.2005.

Authors

Malin Svensson¹, Elisabet Waak, Ulla Svensson, Peter Rådström

Affiliation

¹ Applied Microbiology, Lund Institute of Technology, Lund University, P.O. Box 124, SE- 221 00 Lund, Sweden.

Abstract

Altered levels of enzymes in the central carbon metabolism in Streptococcus thermophilus increased the exopolysaccharide (EPS) production 3.3 times over that of the parent strain. The influence of enhanced EPS production on the rheological properties of fermented milk is described for engineered strains of S. thermophilus which produce different levels of EPSs.

Publication types

Evaluation Study
Research Support, Non-U.S. Gov't

MeSH terms

Animals
Elasticity
Fermentation
Genetic Engineering / methods
Milk / microbiology*
Milk / physiology*
Mutation
Polysaccharides, Bacterial / biosynthesis*
Streptococcus thermophilus / enzymology
Streptococcus thermophilus / genetics
Streptococcus thermophilus / growth & development
Streptococcus thermophilus / metabolism*
Viscosity

Substances

Polysaccharides, Bacterial
exopolysaccharide, Streptococcus