(b).
| Minimum inhibitory concentrations (MIC) and Minimum bactericidal concentration (MBC) (mg/ml) | |||||||||
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| MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | ||
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| Gram + | |||||||||
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B. subtilis ATCC 6633 |
0.039 | 0.078 | 0.078 | 0.156 | 0.078 | 5.0 | 0.156 | 5.0 | - |
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B. cereus ATCC 14579 |
0.039 | 0.625 | 0.156 | 5.0 | 0.156 | 0.156 | 0.312 | 5.0 | - |
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S. aureus ATCC 25923 |
0.625 | 1.25 | 2.5 | 5.0 | 0.312 | 0.625 | 0.625 | 0.625 | - |
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S. epidemis ATCC 12228 |
0.156 | 0.312 | 2.5 | 2.5 | 5.0 | 10 | 5.0 | 10 | - |
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E. faecalis ATCC 29212 |
1.25 | 1.25 | 2.5 | 2.5 | 0.078 | 1.25 | 0.625 | 10 | - |
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M. luteus ATCC 1880 |
0.312 | 1.25 | 2.5 | 5.0 | 5.0 | 10 | 5.0 | 10 | - |
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L. monocytogenes (food isolate 2132) |
0.156 | 0.625 | 2.5 | 5.0 | 1.25 | 5.0 | 1.25 | 5.0 | - |
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| Gram − | |||||||||
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|
S. enteritidis (food isolate) |
0.078 | 0.625 | 0.312 | 5.0 | 2.5 | 5.0 | 2.5 | 5.0 | - |
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|
K. pneumoniae ATCC 10031 |
0.312 | 1.25 | 0.312 | 5.0 | 2.5 | 2.5 | 2.5 | 2.5 | - |
∗Genta: gentamicin was used as a standard antibiotic at a concentration of 15 μg/well; essential oil concentration: 15 μl/well; extract concentration: 2.5 mg/ml.
(-): not active (0 mm).
Values in the same line with different subscript (a > b > c>d) are significantly different within season (P <0.05).