Cultivation of bifidobacterium and lactobacillus in medium with sodium selenite

The article presents data on the relevance of the production of new alternative sources of organic forms of selenium. It describes the ability of microorganisms to selenium bitransformation. The article presents data concerning sodium selenite concentration impact on biomass growth of bifidus and lactic bacteria. It has been proved that high concentrations of sodium selenite inhibit microorganism growth. Main indicators distinguishing biomass accumulation were optical density factors and colony-forming unit quantity. It has been proved that investigated microorganisms available for biotransformation of selenium inorganic forms and its conversion into organic forms during cultivation. By using fluorimetric method quantitative composition of biotransformed selenium has been defined.