Establishment of growth predictive model of Vibrio parahaemolyticus in bread shrimp

To study the growth law of V. parahaemolyticus in the process of bread shimp, growth curves under different temperatures (10, 14, 18, 22, 26, 30, 37℃, respectively) were determined. The modified Gompertz, modified Logistic and Baranyi models, respectively, were applied to fit the growth curves by Origin 8.0 software and DMFit software, and the primary model was established. The root-squaring model were used to fit the maximum specific growth rates obtained by the optimum growth model for the establishment of the secongary model. Results showed that the modified Gompertz model was more accurate and useful in fitting V. parahaemolyticus growth curves than the modified Logistic and Baranyi & Robert models, respectively (R2=0.9917) . And the secondary model had a high goodness-of-fit (R2=0.9687) . The optimum growth equations were obtained. The modified Gompertz model coulde be used for predicting the growth of V. parahaemolyticus in Bread Shrimp under above temperature condition.