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