Lactic acid production in a continuous culture using lignocellulosic hydrolysate as a substrate. Identification of a physiological model

The effect of lignocellulosic hydrolysate of crushed corn mobs on the growth and lactic acid formation in a continuous culture ofLactobacillus casei andL. lactis at dilution rate 0.08–0.3/h was studied. A simple physiological model of the process was derived from computer-aided analysis of the data which relates bacterial growth, lactic acid formation to the utilization of two different sources of nutrients. The parameters of the model were estimated by nonlinear regression and used for process simulation and estimation of maximum productivity of lactic acid.