Effect of uracil on rifamycin SV production by Amycolatopsis mediterranei MV35R

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The effect of different organic nitrogen compounds on the production of rifamycin SV by Amycolatopsis mediterranei MV35R and their optimum concentrations have been described. Results obtained indicate that rifamycin SV production increased from 4020 mg l−1 to 4575 mg l−1 when organic nitrogen compound uracil was added at 0.2% (w/v) concentration to the fermentation medium by A. mediterranei MV35R. The rifamycin SV yield was enhanced by 505 mg l−1 using uracil (2 g l−1) when compared with barbital.

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