TABLE 6.
Effect of cold shock at 0°C for 3 h on mean D60 values of L. monocytogenes Scott A previously grown to stationary phase at 37°C and inoculated onto frankfurter skin or into UHT 2% milk
| Treatment | D valuea | D-value decrease (%) |
|---|---|---|
| Control cells inoculated onto frankfurter meat | 2.22 (0.14) | |
| Cells inoculated onto frankfurter meat and cold shocked for 3 h at 0°C | 1.67 (0.13) | 25 |
| Control cells inoculated into UHT milk | 1.26 (0.00) | |
| Cells inoculated into UHT milk and cold shocked for 3 h at 0°C | 1.03 (0.02) | 15 |
a
Values are means (SD) of two replicate trials.