Table 1. Primary growth models used to predict growth of L. monocytogenes in refrigerated cooked sausage after the packaging had been opened in household

Model Equation1) Used program
Baranyi y=y0+μAt-ln1+expμAt+1expymax-y0At=t+1μln    expμt+exp-μλ-exp -μt+λ DMFit
1)y=cell number (log CFU/g), y0=log initial number of cells (log CFU/g), A=difference between initial and final cell numbers (CFU/g), t=time, μ=maximum growth rate, λ=lag time.