Process for preparing narasin
AssigneeEli Lilly and Company
InventorsRalph E. Kastner, Robert L. Hamill
Life of this patent
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Abstract
The new microorganism Streptomyces lydicus DeBoer et al., NRRL 12034 and the fermentation process for preparing narasin by submerged aerobic fermentation of this organism.
Claims4
The method of producing the antibiotic narasin which comprises cultivating Streptomyces lydicus DeBoer et al., NRRL 12034, or a narasin-producing mutant or variant thereof, in a culture medium containing assimilable sources of carbohydrate, nitrogen, and inorganic salts under submerged aerobic fermentation conditions until a substantial amount of antibiotic activity is produced by said organism in said culture medium.
A biologically pure culture of the microorganism Streptomyces lydicus DeBoer et al., NRRL 12034, which is capable of producing narasin in a recoverable quantity upon cultivation in a culture medium containing assimilable sources of carbohydrate, nitrogen, and inorganic salts under submerged aerobic fermentation conditions.
Dependencies are inferred from the claim text.