| Isolates | Conditions | log CFU/mL | ||
| 0 | 2 | 4 h incubation | ||
| AJ7 | Control (pH 7.0) | 10.0 ± 0.09 | 9.9 ± 0.12 | 9.9 ± 0.04 |
| Gastric juice (pH 2.0) | 9.7 ± 0.04 | 7.1 ± 0.03 | 5.2 ± 0.02 | |
| Gastric juice (pH 2.5) | 9.9 ± 0.11 | 7.3 ± 0.14 | 5.8 ± 0.02 | |
| Gastric juice (pH 3.0) | 10.0 ± 0.07 | 7.7 ± 0.13 | 6.3 ± 0.13 | |
| Intestinal juice (pH 8.0) | 10.4 ± 0.05 | 10.1 ± 0.11 | 9.6 ± 0.05 | |
| AJ9 | Control (pH 7.0) | 10.2 ± 0.02 | 9.9 ± 0.17 | 9.8 ± 0.06 |
| Gastric juice (pH 2.0) | 9.7 ± 0.07 | 5.5 ± 0.14 | 4.8 ± 0.23 | |
| Gastric juice (pH 2.5) | 9.7 ± 0.34 | 5.9 ± 0.09 | 5.7 ± 0.01 | |
| Gastric juice (pH 3.0) | 10.3 ± 0.26 | 6.0 ± 0.04 | 5.7 ± 0.40 | |
| Intestinal juice (pH 8.0) | 10.3 ± 0.15 | 9.9 ± 0.14 | 9.8 ± 0.04 | |
| AJ15 | Control (pH 7.0) | 10.2 ± 0.06 | 10.1 ± 0.03 | 9.6 ± 0.13 |
| Gastric juice (pH 2.0) | 9.7 ± 0.05 | 5.5 ± 0.07 | 4.8 ± 0.19 | |
| Gastric juice (pH 2.5) | 9.8 ± 0.07 | 6.3 ± 0.28 | 5.5 ± 0.12 | |
| Gastric juice (pH 3.0) | 10.3 ± 0.13 | 6.3 ± 0.28 | 6.2 ± 0.16 | |
| Intestinal juice (pH 8.0) | 10.2 ± 0.09 | 10.0 ± 0.21 | 9.6 ± 0.21 | |
| AJ82 | Control (pH 7.0) | 10.1 ± 0.02 | 10.1 ± 0.12 | 9.8 ± 0.03 |
| Gastric juice (pH 2.0) | 8.8 ± 0.04 | 3.2 ± 0.02 | 2.0 ± 0.08 | |
| Gastric juice (pH 2.5) | 9.3 ± 0.07 | 4.8 ± 0.03 | 4.0 ± 0.04 | |
| Gastric juice (pH 3.0) | 9.3 ± 0.04 | 5.4 ± 0.06 | 4.2 ± 0.05 | |
| Intestinal juice (pH 8.0) | 10.1 ± 0.09 | 10.1 ± 0.12 | 9.6 ± 0.06 | |
| AJ94 | Control (pH 7.0) | 10.2 ± 0.04 | 10.0 ± 0.05 | 9.8 ± 0.21 |
| Gastric juice (pH 2.0) | 7.1 ± 0.05 | 0.0 | 0.0 | |
| Gastric juice (pH 2.5) | 9.4 ± 0.62 | 5.1 ± 0.18 | 0.0 | |
| Gastric juice (pH 3.0) | 10.1 ± .21 | 5.3 ± 0.04 | 0.0 | |
| Intestinal juice (pH 8.0) | 10.1 ± 0.03 | 10.0 ± 0.09 | 9.7 ± 0.15 | |
| AJ99 | Control (pH 7.0) | 10.5 ± 0.12 | 10.1 ± 0.08 | 9.8 ± 0.38 |
| Gastric juice (pH 2.0) | 10.2 ± 0.05 | 3.5 ± 0.05 | 0.0 | |
| Gastric juice (pH 2.5) | 10.1 ± 0.04 | 4.0 ± 0.04 | 0.0 | |
| Gastric juice (pH 3.0) | 10.4 ± 0.07 | 8.9 ± 0.03 | 6.4 ± 0.04 | |
| Intestinal juice (pH 8.0) | 10.4 ± 0.04 | 10.2 ± 0.24 | 10.1 ± 0.32 | |
| AJ112 | Control (pH 7.0) | 10.1 ± 0.04 | 10.1 ± 0.03 | 10.0 ± 0.06 |
| Gastric juice (pH 2.0) | 7.5 ± 0.09 | 3.5 ± 0.07 | 0.00 | |
| Gastric juice (pH 2.5) | 9.9 ± 0.07 | 4.5 ± 0.04 | 2.0 ± 0.07 | |
| Gastric juice (pH 3.0) | 10.9 ± 0.08 | 6.2 ± 0.08 | 5.9 ± 0.08 |