Development and Validation of Predictive Models of Brochothrix thermosphacta Isolated from Chilling Ground Pork
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Abstract:
The counts of Brochothrix thermosphacta in chilled ground pork at 0, 5, 10, 15 and 20 ℃ were analyzed. Growth models of Brochothrix thermosphacta at different temperatures were developed by SAS 9.1 software. The deviation, accurate factors and R-square of model were close 1, indicated that the growth dynamics of Brochothrix themosphacta at different temperature could be well described by a Gompertz type model. The model of relationship between temperature and maximum specific growth rate, lag phase were built respectively using Belehradek model, with the value of p less than 0.01. Results showed that the growth dynamics of Brochothrix themosphacta at 0-20 ℃ could be well predicted by model.
