Table 1.
Tolerance of four B.longum strains to simulated gastroenteric environments.
| Strain | Initial Survival in PBS | Survival after 2 h at pH 2.5 in SGJ |
Survival after 3 h at pH 8.0 in 0.3% Oxigall |
||
|---|---|---|---|---|---|
| Mean Counts (Log CFU/mL) |
Mean Counts (Log CFU/mL) |
Survival Rate | Mean Counts (Log CFU/mL) |
Survival Rate | |
| B. longum CCFM 1077 | 9.76 ± 0.06 a | 7.97 ± 0.18 b | 81.66% | 6.36 ± 0.12c | 65.16% |
| B. longum I3 | 9.23 ± 0.24 a | 7.56 ± 0.14 b | 81.91% | 6.08 ± 0.08 c | 65.87% |
| B. longum J3 | 9.32 ± 0.18 a | 7.86 ± 0.26 b | 84.33% | 5.95 ± 0.12 c | 63.84% |
| B. longum B3 | 9.58 ± 0.08 a | 6.98 ± 0.23 b | 72.86% | 6.24 ± 0.18 c | 65.14% |
All values are means ± standard error of the mean. a,b: Means in the same row with different superscript letters are significantly different (p < 0.01) based on determination using a one-way ANOVA followed by Tukey multiple comparison test. % survival = final (CFU/mL)/control (CFU/mL) × 100% survival indicates that the growth rate of the strain was not affected by the treatment. PBS: Phosphate Buffer solution. SGJ: Simulated gastric juice.