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The models are based on extensive experimental data of microbial behavior in liquid microbiological media and food.

There can be no guarantee that predicted values will match those that would occur in any specific food system. Before the models could be used in such a manner, the user would have to validate the models for each specific food of interest.

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Listeria monocytogenes (Broth Culture, Anaerobic, Aw)

Input Conditions

Range: 4 to 37 °C
Range: 4.5 to 8.0
Range: 0.970 to 0.997
Range: 0.0 to 150.0 (ppm)
Range: 1 - 6
Range: 10 - 200 hours
Line chart of data points for modeled transfer. Also available in a table format below the chart.
Modeled Growth Parameters
  • Max Growth Rate (log10 cfu/h):
    • Mean:0.45
    • LCL:0.40
    • UCL:0.50
  • Lag Phase Duration (h):
    • Mean:2.6
    • LCL:2.3
    • UCL:3.0
  • Maximum Population Density: 9.34 (log10 cfu/ml)
Modeled Growth
Time (h) log10 cfu/ml
Mean LCL UCL
0.0 3.070 3.067 3.072
0.5 3.105 3.098 3.114
1.0 3.153 3.138 3.171
1.5 3.215 3.189 3.247
2.0 3.294 3.253 3.343
2.5 3.389 3.330 3.461
3.0 3.502 3.421 3.602
3.5 3.634 3.526 3.764
4.0 3.782 3.647 3.947
4.5 3.947 3.781 4.149
5.0 4.127 3.928 4.366
5.5 4.321 4.088 4.596
6.0 4.525 4.258 4.836
6.5 4.737 4.438 5.082
7.0 4.956 4.625 5.331
7.5 5.178 4.819 5.580
8.0 5.402 5.016 5.826
8.5 5.625 5.216 6.067
9.0 5.846 5.417 6.302
9.5 6.062 5.618 6.528
10.0 6.273 5.816 6.744
10.5 6.477 6.011 6.949
11.0 6.674 6.202 7.144
11.5 6.862 6.388 7.326
12.0 7.041 6.568 7.497
12.5 7.212 6.742 7.657
13.0 7.372 6.908 7.805
13.5 7.524 7.067 7.942
14.0 7.666 7.219 8.068
14.5 7.798 7.364 8.185
15.0 7.922 7.500 8.292
15.5 8.038 7.629 8.389
16.0 8.145 7.751 8.479
16.5 8.244 7.866 8.561
17.0 8.336 7.973 8.635
17.5 8.421 8.074 8.703
18.0 8.499 8.168 8.765
18.5 8.571 8.256 8.820
19.0 8.638 8.338 8.871
19.5 8.699 8.415 8.917
20.0 8.755 8.486 8.959
20.5 8.806 8.552 8.996
21.0 8.853 8.613 9.030
21.5 8.896 8.670 9.061
22.0 8.935 8.722 9.089
22.5 8.971 8.771 9.114
23.0 9.004 8.816 9.136
23.5 9.034 8.857 9.157
24.0 9.061 8.896 9.175
24.5 9.086 8.931 9.192
25.0 9.109 8.964 9.206
25.5 9.130 8.994 9.220
26.0 9.149 9.022 9.232
26.5 9.166 9.048 9.243
27.0 9.182 9.071 9.253
27.5 9.196 9.093 9.261
28.0 9.209 9.113 9.269
28.5 9.221 9.132 9.276
29.0 9.232 9.148 9.283
29.5 9.242 9.164 9.289
30.0 9.251 9.178 9.294
Source:

R.L. Buchanan, H.G. Stahl and R.C. Whiting, Effects and Interactions of Temperature, pH, Atmosphere, Sodium Chloride, and Sodium Nitrite on the Growth of Listeria monocytogenes:  Journal of Food Protection (1989) 52(12):844-851.

R.L. Buchanan and J.G. Phillips, Response Surface Model for Predicting the Effects of Temperature, pH, Sodium Chloride content, Sodium Nitrite Concentration, and Atmosphere on the Growth of Listeria monocytogenes.:  J. Food Protection (1990) 53:370-376.