TABLE 8.
Effect of reduced water activity on the heat tolerance of Salmonella strains, measured as the time in minutes to obtain a 3-log10 reduction (standard error)
| Serovar and/or strain | Value at heat challenge temp (°C) and water activity (rvp)
|
||||||||
|---|---|---|---|---|---|---|---|---|---|
| 60°C
|
65°C
|
72°C
|
|||||||
| 0.65 | 0.80 | 0.90 | 0.65 | 0.80 | 0.90 | 0.65 | 0.80 | 0.90 | |
| Typhimurium DT104 strain 30 | 45 (6) | 48 (6) | 49 (3) | 13 (1) | 16 (2) | 11 (1) | 3.5 (0.6) | 1.9 (0.3) | 0.93 (0.1) |
| Typhimurium DT104 strain 16 | 47 (6) | 43 (5) | 49 (1) | 15 (1) | 13 (2) | 13 (1) | 4.0 (0.5) | 1.8 (0.1) | 1.0 (0.1) |
| Enteritidis PT4 strain E | 20 (5) | 33 (4) | 44 (0.8) | 6.4 (0.4) | 14 (2) | 15 (1) | 1.9 (0.2) | 1.5 (0.3) | 0.78 (0.0) |
| Napoli | 35 (1) | 50 (4) | 50 (1) | 12 (0.7) | 9.2 (0.5) | 12 (0.1) | 3.9 (0.2) | 2.3 (0.0) | 1.4 (0.1) |
| Agona | 28 (1) | 23 (7) | 32 (5) | 7.0 (0.4) | 9.7 (0.3) | 6.1 (0.7) | 2.5 (0.1) | 1.2 (0.2) | 0.52 (0.0) |
| Java | 27 (1) | 47 (2) | 28 (0.8) | 5.6 (0.2) | 13 (0.4) | 7.7 (0.3) | 3.5 (0.3) | 1.6 (0.2) | 1.0 (0.3) |
| Senftenberg 775W | 24 (1) | 35 (2) | 27 (0.9) | 5.4 (0.4) | 12 (0.3) | 8.2 (0.3) | 1.5 (0.3) | 1.3 (0.0) | 0.77 (0.0) |