Table 1 Acid-bile tolerance of Lactobacillus gasseri G2 and the reference strain Lactobacillus rhamnosus GG

Treatments L. gasseri G2 L. rhamnosus GG
log CFU/mL Survival rate (%) log CFU/mL Survival rate (%)
Initial 8.449 ± 0.025 8.863 ± 0.017
pH 7.0 (3 h) 8.751 ± 0.014 103.6 8.889 ± 0.029 100.3
pH 2.5 (3 h) 8.348 ± 0.036 98.8 8.626 ± 0.139 97.3
pH 1.5 (3 h) 7.478 ± 0.319 92.3 3.028 ± 0.249 34.2
Bile salt 0.3% (4 h) 7.219 ± 0.017 85.4 7.023 ± 0.649 79.2