Abstract: A bacterial macromolecular complex produced by bacteria belonging to the Bifidobacterium longum strain deposited according to the treaty of Budapest under number CNCM I-3994 with the Collection Nationale de Cultures de Microorganismes (CNCM) [National Collection of Microorganism Cultures], consisting of chains combining a lipoprotein and an oligosaccharide, wherein: the lipoprotein has a molecular weight of from 30 kDa to 60 kDa; the oligosaccharide has a molecular weight of less than 15 kDa, and preferably less than 10 kDa; the lipoprotein component, which consists of all the lipoproteins of each of the chains, represents from 75 to 99%, preferentially from 80 to 98%, more preferentially from 85 to 95% by weight of the total weight of the complex, and the oligosaccharide component, which consists of all the oligosaccharides combined with each of the chains, represents from 1 to 25%.

Abstract: A bacterial macromolecular complex produced by bacteria belonging to the Bifidobacterium longum strain deposited according to the treaty of Budapest under number CNCM I-3994 with the Collection Nationale de Cultures de Microorganismes (CNCM) [National Collection of Microorganism Cultures], consisting of chains combining a lipoprotein and an oligosaccharide, wherein: the lipoprotein has a molecular weight of from 30 kDa to 60 kDa; the oligosaccharide has a molecular weight of less than 15 kDa, and preferably less than 10 kDa; the lipoprotein component, which consists of all the lipoproteins of each of the chains, represents from 75 to 99%, preferentially from 80 to 98%, more preferentially from 85 to 95% by weight of the total weight of the complex, and the oligosaccharide component, which consists of all the oligosaccharides combined with each of the chains, represents from 1 to 25%.