Abstract
Six strains of antagonistic streptomyces of our laboratory collection were determined as streptomycin producing one by their antibacterial spectrum, and concerning with one of these strains (No. 346) designated as Str. olivaceus some taxonomic, studies were made.
By the isolation and purification of the active principle from this culture filtrate, pure HCl-salt was obtained, showing a potency of 800 u per mg. It gave positive Sakaguchi and maltol test and a crystalline reineckate (d. p. 161-164°C).
