The effect of phosphorus on biosynthesis of polymyxin B by B. polymyxa 1538 was studied and its optimal concentration in the synthetic and two complex media was determined. Correlation between the culture growth and consumption of the main components, on the one hand, and concentration of phosphorus in the medium, on the other hand, was found. It was shown that the effect of phosphorus on biosynthesis of polymyxin B did not depend on the carbon source in the medium and aeration conditions.
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The effect of a number of the most important amino acids on the growth of B. polymyxa 1538 and polymyxin B biosynthesis was studied. It was found that all of the amino acids tested except D-L-threonin and L-alpha-gamma-DABA inhibited the initial growth of the organism.
View Article and Find Full Text PDFThe effect of phosphorus on biosynthesis of polymyxin B by B. polymyxa 1538 was studied and its optimal concentration in the synthetic and two complex media was determined. Correlation between the culture growth and consumption of the main components, on the one hand, and concentration of phosphorus in the medium, on the other hand, was found.
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