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Applied and Environmental Microbiology, October 2005, p. 6398-6400, Vol. 71, No. 10
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.10.6398-6400.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Metabolically Improved Exopolysaccharide Production by Streptococcus thermophilus and Its Influence on the Rheological Properties of Fermented Milk

Malin Svensson,1 Elisabet Waak,2 Ulla Svensson,2 and Peter Rådström1*

Applied Microbiology, Lund Institute of Technology, Lund University, SE-221 00 Lund,1 Arla Foods Innovation Center, SE-105 46 Stockholm, Sweden2

Received 31 January 2005/ Accepted 13 May 2005

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.

* Corresponding author. Mailing address: Applied Microbiology, Lund Institute of Technology, Lund University, P.O. Box 124, SE- 221 00 Lund, Sweden. Phone: 46 46 222 3412. Fax: 46 46 222 4203. E-mail: Peter.Radstrom{at}tmb.lth.se.

Applied and Environmental Microbiology, October 2005, p. 6398-6400, Vol. 71, No. 10
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.10.6398-6400.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.





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