Abstract
A method for continuous cultivation of a beta-hemolytic streptococcus, strain H 64, is described. The production of cells and streptokinase at various dilution rates, pH, and temperature were studied in a complex medium supplied with excess glucose. At pH 7.0, productivity of cells and streptokinase, as well as the yield constant with respect to glucose, all increased with increasing dilution rate in the range of 0.1 to 0.5 hr(-1). The production of streptokinase was found to be a function of both growth rate and cell concentration. Although higher concentrations of streptokinase were obtained in experiments with batch cultures, the production of streptokinase in continuous cultures was found to be 2.3 times higher. The possible industrial application of a continuous production method is considered.
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