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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, Aerobic, NaCl)

Input Conditions

Range: 4 to 37 °C
Range: 4.5 to 7.5
Range: 0.5 to 10.5 (% [g/dL])
Range: 0.0 to 150.0 (ppm)
Range: 1 - 6
Range: 10 - 600 hours
Line chart of data points for modeled transfer. Also available in a table format below the chart.
Modeled Growth
Time (h) log10 cfu/ml
Mean LCL UCL
0 3.000 3.000 3.000
10 3.000 3.000 3.000
20 3.000 3.000 3.000
30 3.000 3.000 3.000
40 3.000 3.000 3.001
50 3.001 3.000 3.007
60 3.006 3.001 3.027
70 3.020 3.004 3.080
80 3.054 3.011 3.189
90 3.124 3.030 3.377
100 3.248 3.070 3.659
110 3.438 3.141 4.033
120 3.702 3.255 4.482
130 4.035 3.421 4.982
140 4.427 3.644 5.505
150 4.861 3.922 6.023
160 5.317 4.249 6.518
170 5.777 4.614 6.974
180 6.225 5.005 7.384
190 6.650 5.409 7.744
200 7.043 5.813 8.056
210 7.399 6.207 8.321
220 7.716 6.583 8.545
230 7.996 6.935 8.731
240 8.240 7.259 8.886
250 8.450 7.554 9.014
260 8.630 7.819 9.119
270 8.783 8.056 9.204
280 8.913 8.265 9.274
290 9.022 8.448 9.331
300 9.114 8.608 9.377
310 9.191 8.747 9.414
320 9.255 8.867 9.444
330 9.309 8.970 9.469
340 9.353 9.059 9.488
350 9.390 9.136 9.504
360 9.421 9.201 9.517
370 9.447 9.256 9.527
380 9.468 9.304 9.536
390 9.486 9.344 9.542
400 9.500 9.379 9.548
410 9.512 9.408 9.552
420 9.522 9.433 9.556
430 9.531 9.454 9.558
440 9.537 9.471 9.561
450 9.543 9.487 9.562
460 9.548 9.499 9.564
470 9.552 9.510 9.565
480 9.555 9.519 9.566
490 9.557 9.527 9.567
500 9.560 9.534 9.567
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.