effect of some nutritional factors on gelatinase biosyn-thesis by Streptomyces spheroides was studied. The experimental organism was cultivated at static conditions at 30° and pH 7.0 for 8 days.
Starch-nitrate medium was used throughout this work.0.3% gelatin gave the maximum gelatinase activity among the tested organic and inorganic nitrogen sourced, whereas 2.5% glucose and potassium dibasic phosphate [0.15%] were the most suitable carbon and phosphorus sources, respectively; for gelatinase biosynthesis. The effect of different calcium carbonate concentrations was also tested, 0.1% was the best concentration for gelatinase biosynthesis by Streptomyces spheroides
M. F. Ghaly ,M. M. Sarhan ,S. M. Ezzat ,
Nutritional requirements for gelatinase biosynthesis by Streptomyces spheroides,
Egypt. J. Microbiol. 1993;
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