“…The utilization of various carbohydrates by Streptomyces griseus has been the subject of many investigations. Although there are several reports (Hubbard and Thornberry, 1946;Saunders and Sylvester, 1947;Dulaney, 1948;Karrow et al, 1952;Perlnan and Wagman, 1952;Hockenhull et al, 1954;Hunter and Hockenhull, 1955;Perlman and O'Brien, 1956;Silverman and Rieder, 1960;Hockenhull, 1960) pertaining to the relationship between carbohydrate utilization and streptomycin production by S. griseus, it appears that no study has considered the relationship between elaboration of streptomycin and protease by this organism and the type of carbohydrate used as the carbon source. Narahashi (1956, 1959a, b, c) reported that the broth of a streptomycin fermentation contained a new type of protease, and suggested that this enzyme may be utilized for many purposes.…”