[Bacteriocinogeny in lactobacilli of the subgenus Streptobacterium]

Bacteriocinogenic properties of 145 strains of L. casei and 23 strains of L. plantarum were studied by the method of delayed antagonism. The capacity for producing bacteriocins was observed in 2 per cent of L. casei and 26 per cent of L. plantarum. The bacteriocins of L. casei and L. plantarum were preliminarily divided into 3 and 2 types respectively by their activity against lactobacilli of different species and the character of the growth inhibition zones of the indicator strain.