BACKGROUND AND AIM:ENVIRONMENTAL DETERIORATION, STRESS, EATING DISORDERS LED TO THE DEVELOPMENT AND PRACTICAL IMPLEMENTATION OF THE CONCEPT "PROBIOTICS AND FOOD PRODUCTS". PROBIOTICS CONTAIN LIVE LACTIC-ACID BACTERIA BELONGING TO THE MOST TYPICAL REPRESENTATIVES OF THE NORMAL HUMAN INTESTINAL MICROFLORA (LACTOBACILLI, BIFIDOBACTERIA, COLIBACTERIA). IN THIS REGARD, THE PURPOSE OF THE WORK WAS TO CONDUCT MICROBIOLOGICAL quality control OF PROBIOTIC FOODS –NAMELY, TO ESTABLISH BELONGINGS OF MICROORGANISMS TO THE LACTOBACILLUS AND BIFIDOBACTERIUM GENUS, AND TO DETERMINE THE QUANTITATIVE CONTENT OF LIVING PROBIOTIC MICROORGANISMS AND THE ANTAGONISTIC ACTIVITY OF PROBIOTIC CULTURES…..