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The time-course of the oleandomycin content in the mycelium and fermentation broth-filtrate was studied by the microbiological assay at different periods of cultivation of strains 471 and 961 in fermenters and flasks containing a rich soybean-corn medium. It was shown that centrifugation of the mycelium over the sucrose density gradient induced a 25-80 per cent decrease in its moist weight at the expense of removal of the admixture components of the rich medium. Addition of glucose (2 per cent) to the culture-grown in a lactose medium by the 72nd hour of fermentation had no effect on further increase of the cell biomass.
View Article and Find Full Text PDFMarketed oleandomycin phosphate, as well as the International Standard of oleandomycin (Great Britain, the 1st Int. Std., 1964) were studied with a purpose of determining their composition.
View Article and Find Full Text PDFA possibility of increasing the distribution coefficient of oleandomycin on its extraction from the aqueous solution into the organic phase containing an electron carrier-acceptor was shown. It was found that the level of the oleandomycin equilibrium shift into the organic phase depended on the carrier nature, i. e.
View Article and Find Full Text PDFA marked decrease in the coefficient of oleandomycin distribution in the system of the fermentation broth filtrate-butyl acetate was observed during the transfer from the 1st to the following extraction stages. It was supposed that the oleandomycin fermentation broth filtrate contained admixtures affecting significantly the antibiotic distribution between the aqueous phase and organic solvent.
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