Nestec S.a.

Patrice Desachy

Jean-Richard Neeser

David Pridmore

Francesca Stingele

Walter Gaier

Bruno Pot

Strain of lactic acid bacterium, (1) whose 16S ribosomal RNA is characteristic of the genus Streptococcus, (2) whose total protein profile, obtained after migration of the total proteins on an SDS-PAGE electrophoresis gel, is characteristic of that of the strain of lactic acid bacterium CNCM I-1920 but distinct from those of the recognized species belonging to the genus Streptococcus, namely ssp. ssp. ssp. ssp. . The invention also relates to the use of a strain of lactic acid bacterium according to the invention, or of a polysaccharide secreted by a strain according to the invention, for the preparation of a dietary composition, in particular an acidified milk or a fromage frais. The invention also relates to a dietary or pharmaceutical composition comprising a strain of lactic acid bacterium or a polysaccharide consisting of a succession of glucose, galactose and N-acetylglucosamine in a respective proportion of 3:2:1. In particular, strains CNCM I-1920, I-1921, I-1922, I-1923, I-1924, I-1925 and I-1926.

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Porsel FR, Switzerland

Patrice Desachy