Table 1. Assessment of viability of the isolated strains after exposure to low pH and bile salts. In all tests, the probiotic L. rhamnosus GG KCTC 5033 served as a reference strain
Number | Strains | Initial counts | After 2 h (pH 2.0) | After 4 h (Bile salts 1%, w/v) | After 4 h (Bile salts 2%, w/v) |
Log (cfu/mL) | Survival (%) | Log (cfu/mL) | Survival (%) | Log (cfu/mL) | Survival (%) |
1 | LGG | 7.5 | 4.5 | 60.0 | 6.8 | 90.8 | 6.7 | 89.1 |
2 | JK226 | 9.4 | 5.6 | 59.5 | 9.2 | 97.7 | 9.0 | 96.2 |
3 | JK756 | 9.0 | 5.5 | 60.9 | 7.6 | 85.1 | 7.7 | 85.5 |
4 | KCCP11031 | 9.0 | 3.1 | 34.6 | 8.3 | 92.2 | 8.3 | 92.0 |
5 | KCCP11156 | 10.6 | 4.6 | 43.4 | 9.2 | 86.3 | 9.4 | 88.8 |
6 | KCCP11178 | 9.3 | 2.0 | 20.9 | 9.1 | 97.0 | 9.0 | 96.3 |
7 | KCCP11179 | 9.4 | 0.0 | 0.0 | 9.0 | 95.6 | 9.1 | 97.2 |
8 | KCCP11180 | 9.5 | 0.0 | 0.0 | 9.2 | 97.4 | 9.3 | 98.6 |
9 | KCCP11181 | 9.4 | 0.0 | 0.0 | 9.2 | 98.7 | 9.2 | 98.7 |
10 | KCCP11183 | 9.3 | 2.5 | 26.6 | 8.8 | 94.6 | 9.0 | 96.1 |
11 | KCCP11184 | 9.4 | 2.2 | 23.5 | 8.9 | 94.8 | 9.0 | 95.5 |
12 | KCCP11186 | 9.3 | 2.4 | 26.2 | 8.8 | 94.8 | 8.7 | 93.1 |
13 | KCCP11209 | 9.6 | 0.0 | 0.0 | 8.9 | 93.3 | 7.9 | 82.3 |
14 | KCCP11213 | 9.3 | 1.7 | 17.9 | 8.9 | 96.0 | 9.0 | 96.8 |
15 | KCCP11218 | 9.3 | 1.1 | 12.1 | 9.0 | 96.9 | 9.1 | 98.2 |
16 | KCCP11219 | 9.3 | 0.0 | 0.0 | 9.1 | 98.4 | 9.1 | 98.5 |
17 | KCCP11222 | 9.4 | 1.1 | 12.0 | 9.1 | 97.4 | 8.8 | 94.2 |
18 | KCCP11223 | 8.4 | 2.3 | 27.9 | 7.7 | 91.8 | 7.8 | 93.1 |
19 | KCCP11298 | 9.1 | 0.0 | 0.0 | 8.7 | 94.8 | 8.6 | 94.4 |
20 | KCCP11303 | 9.3 | 3.0 | 32.1 | 8.5 | 91.4 | 8.6 | 91.7 |
21 | KCCP11308 | 9.2 | 0.5 | 5.7 | 8.9 | 96.7 | 8.9 | 96.8 |
22 | KCCP11309 | 9.2 | 5.1 | 55.6 | 8.8 | 95.3 | 8.9 | 96.5 |
23 | KCCP11316 | 9.1 | 0.0 | 0.0 | 7.9 | 87.0 | 7.9 | 86.9 |
24 | KCCP11317 | 9.4 | 2.8 | 29.6 | 8.7 | 92.9 | 8.6 | 92.4 |
25 | KCCP11318 | 9.1 | 3.1 | 34.5 | 8.1 | 89.9 | 8.2 | 90.5 |
26 | KCCP11319 | 9.3 | 4.6 | 50.0 | 8.9 | 96.4 | 9.0 | 96.6 |
27 | KCCP11324 | 8.2 | 1.8 | 22.1 | 7.9 | 95.4 | 8.0 | 97.3 |
28 | KCCP11349 | 9.3 | 5.8 | 62.4 | 8.9 | 95.6 | 8.7 | 93.3 |
29 | KCCP11354 | 9.0 | 3.9 | 43.4 | 8.8 | 97.7 | 8.8 | 97.9 |
30 | KCCP11355 | 9.1 | 0.0 | 0.0 | 8.9 | 98.2 | 8.7 | 95.9 |
31 | KCCP11356 | 9.0 | 3.9 | 43.4 | 8.8 | 97.7 | 8.8 | 97.9 |
32 | KCCP11370 | 8.7 | 1.0 | 11.5 | 8.2 | 94.0 | 7.8 | 89.4 |
33 | KCCP11376 | 10.2 | 0.5 | 5.1 | 8.0 | 78.6 | 7.8 | 75.9 |
34 | KCCP11446 | 9.3 | 4.3 | 46.0 | 8.8 | 94.5 | 9.0 | 96.2 |
35 | 66 | 9.0 | 3.6 | 40.3 | 8.7 | 97.1 | 8.6 | 96.2 |
36 | 70 | 9.3 | 4.8 | 51.8 | 8.7 | 93.7 | 8.7 | 93.9 |
37 | 75 | 8.5 | 0.0 | 0.0 | 7.8 | 92.3 | 7.7 | 91.3 |
38 | 78 | 8.2 | 2.2 | 27.1 | 6.8 | 82.7 | 6.8 | 82.4 |
39 | 115 | 9.2 | 0.0 | 0.0 | 7.7 | 83.6 | 7.6 | 82.9 |