Table 5.
Effect of heat on the antibacterial action of bacteriocins from L. plantarum KLDS 1.0344 encountering L. monocytogenes ATCC 19115, S. typhimurium ATCC 14028, E. coli O157:H7 ATCC 43889, S. aureus ATCC 25923. All results are presented in inhibition activity (%).
Temperature/Time | L. monocytogenes | S. aureus | S. typhimurium | E. coli O157:H7 |
---|---|---|---|---|
80/20 | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a |
80/30 | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a |
80/40 | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a |
100/20 | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a |
100/30 | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a |
100/40 | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a | 100.0 ± 0.0 a |
120/20 | 85.0 ± 0.7 b | 86.5 ± 0.3 b | 83.0 ± 0.1 b | 81.0 ± 0.2 b |
120/30 | 74.3 ± 0.4 c | 78.0 ± 0.2 c | 71.5 ± 0.1 c | 69.0 ± 0.0 c |
120/40 | 61.2 ± 0.1 d | 54.5 ± 0.1 d | 47.0 ± 0.3 d | 40.5 ± 0.0 d |
Inhibition activity (%) = [(diameter of inhibition zone)2 − (10 mm)2/(diameter of maximum inhibition zone)2 − (10 mm)2] × 100%. The data values are expressed as the mean ± SD (n = 3). Values in a column with different superscripts are significantly different (p < 0.05).