INFLUENCE OF EXPONENTIALLY DECREASING FEEDING RATES ON FED-BATCH ETHANOL FERMENTATION OF SUGAR-CANE BLACKSTRAP MOLASSES

The ethanol yield was not affected and the ethanol productivity was increased when exponentially decreasing feeding rates were used instead of constant feeding rates in fed batch ethanol fermentations. The influences of the initial sugar feeding rate on the ethanol productivity, on the constant ethanol production rate during the feeding phase and on the initial ethanol production specific rate are represented by Monod-like equations. © 1990 Kluwer Academic Publishers.