The paper considers the problem of initial
medium condition’s optimization for batch
fermentation process - starter culture cultivation
in milk industry. The backpropagation through
time method is used as optimization procedure for
finding the optimal initial value of dissolved
oxygen concentration in the milk with respect to
predefined technological demand of final ratio
between two microorganisms in the obtained
starter culture. The simulation results confirm
experimental experience and expert’s opinion on
the possible optimal initial conditions.