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Published on: April 25, 2015
Cell proliferation-cephamycin biosynthesis relationship in the culture of Streptomyces lactamdurans L 2/6: phosphate
Abstract:
During batch cultivation of Streptomyces lactamdurans a diauxic growth has been shown taking into consideration dry cell mass, protein, and DNA determination. This phenomenon was connected with substantial changes in environmental conditions such as concentrations of ammonia and amino nitrogen, soluble inorganic phosphate and pH. The antibiotic production was preceded by the preparatory phase occurring at the beginning of the second growth phase. A hypothetical pattern of cell physiology in the curse of cephamycin fermentation is discussed. An essential part in the biphasic cell growth and the induction of antibiotic synthesis in this model is played by phosphate depletion in the medium.
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