The effect of acid pH on the growth kinetics of Trichoderma viride

Batch cultures of Trichoderma viride have been carried out in a 10 liter stirred fermenter a controlled pH values of 2.5, 2.7, 3.0, and 4.0 and without pH control at a temperature of 28 degrees C. Cell and glucose concentrations and dissolved oxygen values are reported. The yield coefficient was found to be constant at 0.40 kg cells/kg glucose and the maximum specific growth rate was linearly correlated with the hydrogen ion concentration.