FIELD: biotechnology. SUBSTANCE: invention can be used in dairy industry for manufacturing fermented-milk foodstuffs. The consortium of microorganisms MBI-4 consisting of strains Bifidobacterium bifidum B-2, Bifidobacterium infantis BI-7, Bifidobacterium longum BL-5, Bifidobacterium adolescentis MC-42 is prepared by the combined culturing indicated strains in sterile defatted milk for 14-16 h. Invention provides high biochemical and antagonistic activity and shows ability for survival and multiplication in human intestine on the background of antibiotic therapy carrying out. EFFECT: valuable medicinal properties of consortium. 3 tbl
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