FIELD: food industry.
SUBSTANCE: invention relates to biotechnology and may be used as a direct addition starter for probiotic sour cream preparation. The method involves preparation of a nutritional medium where one additionally introduces sodium selenite in an amount of 30-50 mcg/ml, sterilisation and cooling to 35°C, inoculum introduction into the nutritional medium; the inoculum is represented by combined starter based on Bifidobacterium bifidum 83, Lactococcus lactis subspecies cremoris 244, Propionibacterium freudenreichii subspecies shermanii AC-2503 taken at a ratio of 40:30:30, biomass propagation and separation from culture liquid. One performs mixing with a protective medium, dispensing, closuring and freezing.
EFFECT: invention allows to enhance organoleptic properties of exo-polysaccharide potential and increase storage life of the bacterial concentrate.
2 cl, 5 tbl, 8 dwg, 3 ex
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