Abstract
Analysis of a large number of experimental data from the cultivation of Bacillus subtilis formed the basis for a kinetic model of the process explaining the effect of composition of the culture medium and of the growth rate on the rate of enzyme production. The resulting rate of formation of α-amylase (EC 3.2.1.1) reflects the sum of the rate of enzyme production and the rate of its degradation as affected by the environment. The kinetic dependence confirms the previously described mechanism of regulation of enzyme biosynthesis. The mathematical model of the process served here to determine the optimal conditions for enzyme biosynthesis which were then verified in a fed-batch cultivation. The production of the enzyme in fed-batch culture was found to be twice that found in a batch cultivation.
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