2.3.2. Selection of primary interaction models
To predict the inhibition of Salmonella by the natural microbiota
of pork meat at various storage temperatures, three microbial interaction models were tested.
The model proposed by Giménez and Dalgaard (2004) for interaction between LAB and L. monocytogenes was evaluated (Equation (3)). This model corresponds to the Jameson effect and predicts that one microorganism stops growing when the other has reached its maximum population density (MPD). An important characteristic of this equation is that it does not include parameters that need to be fitted from mixed-culture studies. Equation (3) includes the lag phase duration for both Salmonella (tlag S) and the natural microbiota (tlag NB):