By using LKB2277 Bioactivity Monitor, we have determined the thermogenetic power curves of three kinds of Anaerobes: Bacteroides distasonis, Clostridium difficille, Peptococcus niger. Thermokinetic equation, ln[P/(Pm-P)^v^+^1]=ln[P0/(Pm-P0)^v^+^1]+k.t, was established based on the generalized logistic equation. The rate constants (k) of cell growth were obained, and for BActeroids distasonis, the activation properties, such as activation energy, the entropy of activation, Gibbs function of activation and equilibrium constant of activation were also calculated. This thermokinetic equation is very suitable for cell growth of separated culture. It was compared with exponential and logistic model. It is very significant for the study of bacterial limited growth and their characteristics.

Key words: CALORIMETRY, ACTIVATION ENERGY, TRANSITION STATE THEORY, ANAEROBIC BACTERIA