Table 1.
Survival rate of six strains at pH 3.0 and 0.3% bile salt in MRS medium
| Strain | Acid tolerance at pH 3.0 |
Bile tolerance with 0.3% bile salt |
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| Viable count after 0 h (log CFU/ml) | Viable count after 3 h (log CFU/ml) | Survival rate (%) | Viable count after 0 h (log CFU/ml) | Viable count after 3 h (log CFU/ml) | Survival rate (%) | |
| R4 | 8.29±0.22a | 7.22±0.19a | 87.1 | 8.99±0.13a | 6.73±0.03e | 74.9 |
| H4 | 7.92±0.27c | 6.89±0.11c | 87.0 | 8.84±0.20b | 6.77±0.21d | 76.5 |
| S4 | 7.86±0.37d | 6.72±0.35d | 85.5 | 8.20±0.14c | 6.99±0.02a | 85.2 |
| R5 | 8.11±0.32b | 6.92±0.53b | 85.3 | 8.13±0.07d | 6.96±0.03a | 85.1 |
| K4-9 | 8.22±0.63a | 6.59±0.01e | 80.2 | 8.14±0.01d | 6.86±0.04b | 84.2 |
| K4-8 | 7.21±0.30e | 5.38±0.12f | 74.6 | 7.88±0.06e | 6.79±0.08c | 86.1 |
Viable counts are presented as the mean±SD from the mean of triplicate determinations, and the values followed by different lowercases in the same column are significantly different (P<0.05)