Abstract: The present invention to the identification of a novel isolated bacterial strain, the Limosilactobacillus reuteri strain which is characterized by a naturally occurring overproduction of riboflavin (vitamin B2) compared to other known strains of lactobacilli. Said strain of the Limosilactobacillus species is deposited under accession number LMG P-32020. In a further aspect, also the uses of said L. reuteri strain are disclosed herein. In particular, the use of said strain in food and feed industry, human and veterinary health, large-scale vitamin production, cosmetics and consumer care products is disclosed.

Abstract: The present invention is directed to a novel isolated bacterial strain of the Streptococcus salivahus (S. salivahus) species. More in particular, a strain of the S. salivahus species deposited at BCCM under accession number LMG P-31813. Further, the present invention relates to a composition comprising an isolated bacterial strain of the S. salivahus species. In another aspect, the present invention further relates to the isolated bacterial strain according to the present invention or the composition according to the present invention for use in immunomodulation and/or in the treatment and/or prevention of infections of diseases.