Table 3. The antimicrobial activity of the catalase-treated cell-free culture supernatant (KT38-3-CFS, pH=6.5) obtained from Lactobacillus brevis KT38-3-against the indicator test bacteria, which was determined with the agar well diffusion assay.
| Indicator strains | Inhibition zone diameter (in mm) of KT38-3-CFS |
|---|---|
| Escherichia coli (LMG 8223)1) | − |
| Escherichia coli O157:H7 (ATCC 35150)2) | − |
| Pseudomonas aeruginosa (ATCC 2783)2) | − |
| Salmonella sp.3) | − |
| Staphylococcus aureus (ATCC 25923)2) | 20±0.6 |
| Micrococcus luteus (NRRL 1018)4) | 23±1.0 |
| Listeria monocytogenes (LMG 13305)1) | − |
| Ententerococcus faecium (NRRL 2354)4) | − |
| Bacillus cereus (LMG 8821)1) | − |
| Bacillus subtilis (NRRL NRS 744)4) | − |
| Staphylococcus epidermidis 10.15) (M-R)6) | 17±0.6 |
| Staphylococcus warneri 14.25) (M&V-R)6) | 16±1.0 |
| Staphylococcus aureus 40.25) (M&V-R)6) | − |
| Staphylococcus haemolyticus 39.15) (M&V-R)6) | − |
| Staphylococcus epidermidis 48.25) (M&V-R)6) | 18±0.6 |
| Staphylococcus hominis 9.35) (V-R)6) | − |
1)
BCCM/LMG, Bacteria Collection. Laboratorium Voor Microbiologie-Universiteit Gent, Gent-Belgium.
2)
ATCC, American Type Culture Collection, Manassas, VA 20110-2209, USA.
3)
Obtained from Eskisehir Osmangazi University, Faculty of Medicine, Eskisehir-Turkey.
4)
NRRL, Agricultural Research Service, Culture Collection, Peoria. IL 61604, USA.
5)
Obtained from Anadolu University, Faculty of Science, Eskisehir-Turkey.
6)
M-R, methicillin-resistant; V-R, vancomycin-resistant; M&V-R, methicillin and vancomycin-resistant.
−, no inhibition.