Abstract: In order to predict microbial growth and inactivation of Aeromonas spp. based on Gompertz model, pork leg was disinfected by 80 ℃ sterile water, inoculated with Aeromonas spp., and then transferred into aseptic package for storage at the growth temperatures of 0, 4, 15, 25, 30 ℃ and 35 ℃ and inactivation temperatures of 40, 45, 50 ℃ and 55 ℃, respectively. The Gompertz model was applied to fit the growth curve and   mirror image    curve of thermal inactivation for Aeromonas spp., respectively. The judgment coefficient (R2), bias value (Bf) and accuracy (Af) were used to evaluate the established models. The results showed that the Gompertz model could describe microbial inactivation with a high R2.

Key words: growth model, inactivation model, uniform, mirror image