Table 2.
The viable counts of B. cereus spores after cooking at different storage temperatures.
| Strain | Temperatures (°C) | Time Interval | Mean log CFU/g ± SD |
|---|---|---|---|
| DSMZ 4312 |
4 | Up to 7 days | ND |
| 25 | Up to 36 h | ND | |
| 48 h | 3.48 ± 0.05 | ||
| 30 | Up to 12 h | ND | |
| 18 h | 3.92 ± 0.08 | ||
| 24 h | 4.41 ± 0.11 | ||
| ATCC® 14579TM | 4 | Up to 7 days | ND |
| 25 | Up to 48 h | ||
| 30 | Up to 24 h | ||
| USMBC 01 | 4 | Up to 7 days | ND |
| 25 | Up to 48 h | ||
| 30 | Up to 24 h | ||
| USMBC 02 | 4 | Up to 7 days | ND |
| 25 | 12 h | ND | |
| 24 h | LOQ | ||
| 36 h | 4.12 ± 0.12 | ||
| 48 h | 4.92 ± 0.10 | ||
| 30 | 6 h | ND | |
| 12 h | LOQ | ||
| 18 h | 3.78 ± 0.18 | ||
| 24 h | 5.22 ± 0.05 | ||
| USMBC 03 | 4 | Up to 7 days | ND |
| 25 | Up to 48 h | ND | |
| 30 | Up to 24 h | ND | |
| USMBC 04 | 4 | Up to 7 days | ND |
| 25 | Up to 24 h | ND | |
| 36 h | 3.32 ± 0.20 | ||
| 48 h | 3.88 ± 0.14 | ||
| 30 | 6 h | ND | |
| 12 h | 3.87 ± 0.16 | ||
| 18 h | 5.44 ± 0.14 | ||
| 24 h | ND | ||
| USMBC 05 | 4 | Up to 7 days | ND |
| 25 | Up to 48 h | ND | |
| 30 | Up to 18 h | ND | |
| 24 h | LOQ | ||
| USMBC 06 | 4 | Up to 7 days | ND |
| 25 | Up to 48 h | ND | |
| 30 | Up to 24 h | ND |
‘ND’ (not detected) indicates below the limit of detection (<10 CFU/g); ‘LOQ’ indicates number of colonies below the limit of quantification (less than 25 CFU).