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  • Title: [Effect of various carbon and nitrogen sources on the biosynthesis of ristomycin, protease and pigments by a culture of Nocardia fructiferi var. ristomycini].
    Author: Toropova EG, Egorov NS, Tkhaker V, Burakaeva AD.
    Journal: Antibiotiki; 1982 Oct; 27(10):749-53. PubMed ID: 6293373.
    Abstract:
    The effect of various sources of carbon and nitrogen on the biosynthesis of ristomycin, protease and pigments by Nocardia fructiferi was studied. It was shown that the carbon sources had the most significant effect on the biosynthesis of the antibiotic. The maximum biosynthetic activity of the Nocardia was observed in the medium containing 1-2 per cent of soybean meal and 2 per cent of glycerol. Under such conditions all the three biologically active substances formed. The contents of ristomycin, protease and pigments amounted to 562-649 microgram/ml, 26-30 PU/ml and 0.45-0.63 conditional units, respectively.
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