Abstract: The aim of the study is the analytical substantiation of the perspective trendthe development of specialized fermented foods. According to the stable trend of using a balanced diet for the prevention and treatment of gastrointestinal diseases (for which dairy products are enriched with probiotics), a bioproduct has been developed, the formulation of which includes cottage cheese, cream, starter cultures of probiotic cultures, berry syrup, wheat bran. Cottage cheese is prepared by fermentation of a mixture consisting of buttermilk, wheat bran and biologically active additive "Nash lecitin", a leaven based on the association of starter (probiotic) cultures Lactobacillus acidophilus, B. lactis, B. longum, Streptococcus thermophilus in an immobilized form, by nanofiltration. Its chemical composition, nutritional and biological value were studied and microbiological parameters characterizing its functional properties were determined. Cottage cheese bioproduct recommended both for mass catering and for elderly persons nutrition.