A simple unstructured mathematical model for the oxidation of glucose to 2,
5-diketo-D-gluconic acid with Erwinia citreus was developed. The kinetic pa
rameters of the model were estimated by the oxygen partial pressure method
and directly from the temporal response obtained from the experimental data
collected in the batch fermentation. The simple developed model based on t
he kinetic measurements was able to simulate quite well the dynamic behavio
ur of the batch fermentation.