Conductometric substrate definition method of total fermentative activity of preparations which contains bifidobacteria

Total fermentative bifidobacterial activity of preparations Bifidumbacterin and Bifidogum was measured by conductometric substrate method. Number of probiotic microorganisms in sour milk of Bifidok was measured. The distinction of results concerning number of cells which were obtained by substrate and standard methods is shown not to exceed 1,5%.