EN
Microprocessing system of tracing and steering fermentation processes by means of the compatible computer with IBM PC has been worked out. Then this system was used for supporting the S. cerevisiae yeast culture. The computer controls the inflow of nutrient medium on the basis of its assimilation in the process lasting 14 hours. In consequence the specific rate of the biomass increment (µ) amounted to 0.092 h-1, efficiency coefficient ( Yx/c) to 0.576 g/g of dry matter of biomass (from g of reducing substances in conversion to glucose) and productivity coefficient (rx) to 2.3 g/dm • h.