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CFU critical Microbial Life cycle stationary phase log N exponential phase death phase t 0 Below detection lag phase CFU limit N 0 t t Lag TTD time Each has a different temperature sensitivity
Listeria Shelf Life (100 CFU/g) on hotdogs 100.0 10.0 Lag Time Time for 100 x Total time Expon. (Total time) Expon. (Time for 100 x) Expon. (Lag Time) t = 149.69e -0.1176 T R 2 = 0.9385 1.0 0 5 10 15 20 25 30 35 40 Temperature °C Electronic tags can handle all three periods of growth
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Listeria Shelf Life (100 CFU/g)<br />
on hotdogs<br />
100.0<br />
10.0<br />
Lag Time<br />
Time for 100 x<br />
Total time<br />
Expon. (Total time)<br />
Expon. (Time for 100 x)<br />
Expon. (Lag Time)<br />
t = 149.69e -0.1176 T<br />
R 2 = 0.9385<br />
1.0<br />
0 5 10 15 20 25 30 35 40<br />
Temperature °C<br />
Electronic tags can handle all three periods of growth
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