Study of probiotic properties of bacteria of the genus Propionibacterium

The current field of research is the study of the positive effects on the human body of lactic acid strains that can normalize the functioning of the microflora of the gastrointestinal tract and regulate the health of the human body. These strains are called probiotics, most often they include lactic acid bacteria of the genus Lactobacillus and Bifidobactrium. But now scientists are increasingly considering dairy propionibacteria as probiotics. This research article is aimed at studying the properties of lactic acid bacteria of the genus Propionibacterium (P. jensenii B-6085, P. freudenreichii B-11921, P. thoenii B-6082 and P. acidipropionici B-5723) with further use of them as probiotics to normalize the functioning of the gastrointestinal microbiota. Probiotic properties (antibiotic resistance and antimicrobial activity) were studied for these strains. According to the results of the studies, 90 % of the studied strains of propionic acid bacteria are characterized by high activity against all test cultures of pathogenic and conditionally pathogenic strains (Escherichia coli, Salmonella enterica, Staphylococcus aureus, Pseudomonas aeruginosa, Proteus vulgaris). In relation to the majority of antibiotics, the studied cultures are characterized by high resistance (35.4 %) and low sensitivity (16.7%). All combinations of the studied strains exhibit biocompatibility. The obtained data allow us to use the studied strains and, in the future, a consortium based on them as multicomponent probiotic additives.