Table 5.
Antibacterial activity of LAB strains (LABS2, LABS4, LABS8, LABS12, LABS13 and LABS14) isolated from the intestinal content of rainbow trout against indicator strains Staphylococcus aureus ATCC 25923, B. subtilis ATCC 6633, E. coli ATCC 25922 and P. aeruginosa ATCC 10145.
| LAB Strains | Inhibition Halo (in mm) of Reference Bacterial Strains | |||
|---|---|---|---|---|
|
S. aureus ATCC 25923 |
B. subtilis ATCC 6633 |
E. coli ATCC 25922 |
P. aeruginosa ATCC 10145 |
|
| LABS2 | 16.7 ± 0.9 a | 18.9 ± 0.4 a | 18.6 ± 1.0 a | 13.9± 0.5 a |
| LABS4 | 30.8 ± 0.7 b | 25.3 ± 0.7 b | 16.2 ± 0.3 b | 31.6± 0.8 b |
| LABS8 | 20.8 ± 0.4 c | 18.3 ± 0.4 a | 8.9 ± 0.4 c | 12.6 ± 0.4 a |
| LABS12 | - | 12.8 ± 0.7 c | - | - |
| LABS13 | 20.5 ± 0.8 c | 16.5 ± 0.7 d | 11.5 ± 0.4 d | 12.4 ± 1.1 a |
| LABS14 | 26.3 ± 0.4 d | 20.9 ± 1.1 e | 12.9 ± 0.3 de | 18.9 ± 0.3 c |
-: inhibition halo not observed. a–e Means with different superscripts within a column are significantly different (p < 0.05). Values are means of two independent experiments, each in triplicate.