[Differentiation of several species of lactobacilli of the subgenus Thermobacterium according to their bacteriocin sensitivity spectra].

The method of retarded antagonism was applied to the study of L. acidophilus (187 cultures), L. salivarius (65 cultures), L. jugurti (16 cultures), L. helveticus (4 cultures) sensitivity to the action of 39 bacteriocines produced by various lactobacilli species. By the sensitivity spectra to bacteriocines L. ècidophilus cultures were divided into 76, L. salivarius--22, L. jugurti--15, and L. helveticus into 2 bacteriocines. By bacteriocine typing it was possible to differentiate into a number of bacteriocine types L. acidophilus and L. salivarius variants with the same biochemical and physiological properties.