The invention relates to a novel strain of lactic bacteria comprising at least one sequence selected from a group consisting of nucleotide sequences SEQ ID No. 1, SEQ ID No. 2, SEQ ID No. 3, SEQ ID No. 4, SEQ ID No. 5, SEQ ID No. 6, SEQ ID No. 7, SEQ ID No. 8 and to a method for the production of said strains. The invention also relates to the sequences SEQ ID Nos. 1-8 and to a nucleic acid, vectors and plasmids comprising said sequences. The invention further relates to food products, especially milk products containing said strains.