Table 2 Minimal inhibitory concentrations (MIC) of amoxicillin and oxacillin alone or in combination with increasing concentrations (0 to 256 μg/ml) of the cranberry PC fraction FC111 against S. aureus ATCC 29213 and MRSA COL
S. aureus strains | Antibiotic | MIC of antibiotic in μg/mL in the presence of an increasing concentration of the cranberry fraction FC111, also in μg/mL (fold decrease in antibiotic MIC)a | ||||
|---|---|---|---|---|---|---|
0 | 32 | 64 | 128 | 256 | ||
ATCC 29213 | amoxicillin | 0.06 | 0.06 (1×) | 0.06 (1×) | 0.015 (4×) | 0.015 (4×) |
MRSA COL | 512 | 4 (128×) | 4 (128×) | 1 (512×) | 1 (512×) | |
ATCC 29213 | oxacillin | 0.5 | 0.06 (8×) | 0.03 (16×) | 0.03 (16×) | 0.03 (16×) |
MRSA COL | 512 | 256 (2×) | 128 (4×) | 32 (16×) | 16 (32×) | |