Table 4 The inhibitory effect of isolated LAB strains against pathogens. Values shown are means ± standard deviations (n = 3).
Isolates | Conditions | Indicator pathogens Diameter of inhibition zone (mm) | ||||||
|---|---|---|---|---|---|---|---|---|
E. coli | K. pneumoniae | L. monocytogenes | Y. enterocolitica | S. flexneri | S. aureus | B. subtilis | ||
Y12 | Neutral pH (6.8) | 0 | 0 | 9.63 ± 0.21 | 0 | 0 | 12.9 ± 0.8 | 12.7 ± 0.46 |
Acidic pH (5.2) | 0 | 0 | 12.97 ± 0.61 | 0 | 0 | 16.0 ± 0.66 | 14.7 ± 0.6 | |
Catalase treated | 0 | 0 | 0 | 0 | 0 | 10.8 ± 0.75 | 0 | |
Proteinase K treated | 0 | 0 | 10.43 ± 0.57 | 0 | 0 | 10.97 ± 0.70 | 11.30 ± 0.98 | |
Y17 | Neutral pH (6.8) | 0 | 0 | 13.67 ± 0.55 | 0 | 0 | 0 | 17.7 ± 0.38 |
Acidic pH (4.8) | 0 | 0 | 17.27 ± 0.71 | 0 | 0 | 9.1 ± 0.6 | 21.6 ± 0.66 | |
Catalase treated | 0 | 0 | 9.13 ± 0.65 | 0 | 0 | 6.53 ± 0.38 | 6.17 ± 0.55 | |
Proteinase K treated | 0 | 0 | 12.73 ± 0.65 | 0 | 0 | 6.33 ± 0.80 | 16.1 ± 0.89 | |
Y23 | Neutral pH 6.8 | 0 | 0 | 0 | 0 | 0 | 13.13 ± 0.93 | 0 |
Acidic pH (5.1) | 0 | 0 | 9.13 ± 0.75 | 0 | 0 | 19.77 ± 0.70 | 10.8 ± 0.36 | |
Catalase treated | 0 | 0 | 6.97 ± 0.50 | 0 | 0 | 0 | 8.37 ± 0.75 | |
Proteinase K treated | 0 | 0 | 7.43 ± 0.42 | 0 | 0 | 15.2 ± 0.66 | 9.77 ± 0.65 | |
Y33 | Neutral pH (6.8) | 17.27 ± 0.35 | 0 | 22.2 ± 0.46 | 0 | 15.67 ± 0.45 | 28.13 ± 0.55 | 28.17 ± 0.51 |
Acidic pH (4.6) | 28.33 ± 1.12 | 18.47 ± 0.74 | 27.57 ± 0.61 | 22.33 ± 1.0 | 23.07 ± 0.55 | 33.33 ± 0.93 | 23.33 ± 0.86 | |
Catalase treated | 0 | 17.23 ± 0.50 | 27.2 ± 0.26 | 19.17 ± 0.50 | 0 | 27.5 ± 0.60 | 25.53 ± 0.51 | |
Proteinase K treated | 27.3 ± 0.95 | 16.97 ± 0.38 | 0 | 18.70 ± 0.40 | 19.03 ± 0.31 | 0 | 0 | |
Y41 | Neutral pH (6.8) | 0 | 0 | 5.70 ± 0.66 | 0 | 0 | 9.40 ± 0.30 | 6.73 ± 0.35 |
Acidic pH (3.8) | 0 | 0 | 11.03 ± 0.61 | 0 | 0 | 12.37 ± 0.45 | 11.2 ± 0.66 | |
Catalase treated | 0 | 0 | 8.00 ± 0.56 | 0 | 0 | 10.37 ± 0.38 | 8.60 ± 0.62 | |
Proteinase K treated | 0 | 0 | 9.33 ± 0.40 | 0 | 0 | 0 | 8.40 ± 0.10 | |
