Table 1 Effect of various antibiotics on the bacterial counts in cultures of S. aureus. S. aureus (DSM 20233 strain) bacteria were incubated in complete medium for 4 hours in the presence of antibiotics. Subsequently, bacterial suspensions were spread on COS blood agar plates. Colonies were counted after an overnight incubation.
Treatment | bacteria/ml |
|---|---|
starting concentration | 4 × 106 |
4 hours without antibiotics | 5.1 × 107 |
4 hours with 1 × MIC flucloxacillin | 1.8 × 105 |
4 hours with 1 × MIC ciprofloxacin | 2.5 × 103 |
4 hours with 1 × MIC gentamicin | 5.2 × 105 |
4 hours with 1 × MIC erythromycin | 8.3 × 105 |
4 hours with 20 × MIC flucloxacillin | 10 |
4 hours with 20 × MIC ciprofloxacin | 0 |
4 hours with 20 × MIC gentamicin | 0 |
4 hours with 20 × MIC erythromycin | 5.9 × 105 |