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  • Title: Studies on immobilized Saccharomyces cerevisiae. III. Physiology of growth and metabolism on various supports.
    Author: Bandyopadhyay KK, Ghose TK.
    Journal: Biotechnol Bioeng; 1982 Apr; 24(4):805-15. PubMed ID: 18546372.
    Abstract:
    In earlier communications general analyses of rapid ethanol fermentation by Saccharomyces cerevisiae immobilized on inert supports were described. In this article physiology of growth and metabolism (parameters like rates of CO(2) evolution and O(2) uptake, respiratory quotient, and generation time) of Saccharomyces cerevisiae immobilized on different supports are reported. Values of the ratio of specific oxygen uptake rate for immobilized cells to free cells have been found to be 0.732, 0.781 and 0.785 for carrier A, carrier B, and covalently crosslinked controlled pore glass (CPG, specific surface area of 439 m(2) g(-1)), respectively. Rates of specific CO(2) evolution for immobilized cells to free cells for these supports are 0.784, 0.822, and 0.783, respectively. Marked reduction in generation time of Saccharomyces cerevisiae on all the supports has been observed. No change in size (4.8-5 microm) and specific growth rate (micro(m) = 0.275 h(-1)) of cells leaving the reactor has been observed.
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