Table 2.
Antibacterial activity of hops flavonoids and their derivatives.
| Microorganism | MIC80 [µg/mL] | ||||||
|---|---|---|---|---|---|---|---|
| 7 | 8 | 14 | 17 | 20a, b | 26 | Ampicillin | |
| S. aureus ATCC19095 (MSSA) | 12.5 | 5 | >50 | 50 | 12.5 | 12.5 | 2.5 |
| S. aureus ATCC43300 (MRSA) | 12.5 | 12.5 | >50 | 50 | 12.5 | 12.5 | ˃5 |
| S. aureus ATCC29213 (MSSA) | 12.5 | 12.5 | 50 | 25 | 12.5 | 12.5 | ˃5 |
| S. epidermidis 4s (MSSE) | 12.5 | >50 | 50 | 50 | 25 | 12.5 | 2.5 |
| S. epidermidis 91M (MRSE) | 25 | >50 | >50 | 50 | 25 | 25 | ˃5 |
| S. typhimurium PCM2565 | na | na | na | na | na | 50 | 5 |
| L. monocytogenes ATCC7644 | na | na | na | na | na | na | 2.5 |
na—not active at the tested antimicrobials concentration.