Table 2 Growth of the three different B. cereus strains in the food matrix prior to simulation of gastrointestinal passage; average values of independent experiments in triplicate expressed in log CFU/g ± standard deviation are presented
B. cereus strain | Time (h) | |||||
|---|---|---|---|---|---|---|
| Â | 0 | 22 | 24 | 26 | 28 | 30 |
B. cereus ATCC14579 | Â | Â | Â | Â | Â | Â |
Total count | 5.8 ± 0.1 | 8.3 ± 0.6 | 8.4 ± 0.3 | 8.8 ± 0.2 | 8.8 ± 0.3 | 8.9 ± 0.2 |
Total B. cereus | 5.7 ± 0.1 | 6.9 ± 0.1 | 6.9 ± 0.1 | 6.7 ± 0.3 | 7.2 ± 0.3 | 7.0 ± 0.2 |
B. cereus spores | < 2.0 ± 0.0 | < 2.0 ± 0.0 | < 2.0 ± 0.0 | < 2.0 ± 0.0 | < 2.0 ± 0.0 | 2.3 ± 0.6 |
B. cereus NVH 1230-88 | ||||||
Total count | 5.9 ± 0.1 | 8.2 ± 0.2 | 8.4 ± 0.1 | 8.9 ± 0.0 | 8.9 ± 0.1 | 8.8 ± 0.2 |
Total B. cereus | 6.2 ± 0.3 | 7.9 ± 0.2 | 8.2 ± 0.1 | 8.5 ± 0.2 | 8.3 ± 0.3 | 7.9 ± 0.1 |
B. cereus spores | 3.5 ± 0.6 | 3.5 ± 0.2 | 3.3 ± 0.6 | 3.4 ± 0.6 | 3.3 ± 0.6 | 3.4 ± 0.6 |
B. cereus FF 73 | ||||||
Total count | 5.7 ± 0.1 | 8.5 ± 0.1 | 8.7 ± 0.1 | 9.0 ± 0.0 | 9.0 ± 0.3 | 8.9 ± 0.3 |
Total B. cereus | 5.7 ± 0.1 | 8.1 ± 0.2 | 8.0 ± 0.1 | 8.3 ± 0.1 | 8.2 ± 0.1 | 8.3 ± 0.2 |
B. cereus spores | 3.8 ± 0.2 | 3.9 ± 0.4 | 3.9 ± 0.4 | 4.0 ± 0.5 | 4.0 ± 0.3 | 4.5 ± 0.1 |