The present invention relates to the use of lactic acid bacteria strains and compositions comprising these strains for manufacturing cooked meat with improved properties. These strains and compositions are particularly suitable for manufacture of cooked ham, frankfurter sausages and mortadella.

The invention relates to a polynucleotide comprising a lacZ gene (lacZ.sup.FS) encoding a -galactosidase characterized by a particular profile regarding its efficiency of hydrolysis of lactose. The invention is also directed to a Streptococcus thermophilus strain comprising a lacZ.sup.FS allele and bacterial composition thereof, and their use to obtain fermented milk not undergoing post-acidification.

The invention relates to a polynucleotide comprising a lacZ gene (lacZ.sup.FS) encoding a -galactosidase characterized by a particular profile regarding its efficiency of hydrolysis of lactose. The invention is also directed to a Streptococcus thermophilus strain comprising a lacZ.sup.FS allele and bacterial composition thereof, and their use to obtain fermented milk not undergoing post-acidification.

The invention relates to a polynucleotide comprising a lacZ gene (lacZ.sup.FS) encoding a -galactosidase characterized by a particular profile regarding its efficiency of hydrolysis of lactose. The invention is also directed to a Streptococcus thermophilus strain comprising a lacZ.sup.FS allele and bacterial composition thereof, and their use to obtain fermented milk not undergoing post-acidification.

The invention relates to a polynucleotide comprising a lacZ gene (lacZ.sup.FS) encoding a -galactosidase characterized by a particular profile regarding its efficiency of hydrolysis of lactose. The invention is also directed to a Streptococcus thermophilus strain comprising a lacZ.sup.FS allele and bacterial composition thereof, and their use to obtain fermented milk not undergoing post-acidification.