Table 6.
Biocidal efficacy of commercial silver alginate and polybiguanide (PHMB) wound dressings.
| Samples | Contact Time (min) | Log Reduction * Exp 1 |
Log Reduction * Exp 2 |
||
|---|---|---|---|---|---|
| Inoculum | 7.11 | 7.09 | 7.39 | 7.07 | |
| S. aureus | P. aeruginosa | S. aureus | P. aeruginosa | ||
| Untreated dressing (control) | 30 | 0.23 | 0.62 | 0.08 | 0.17 |
| Silver alginate-treated dressing | 1 | 0.22 | 0.13 | 0.11 | 0.12 |
| 5 | 0.14 | 0.18 | 0.15 | 0.31 | |
| 15 | 0.29 | 0.23 | 0.50 | 0.42 | |
| 30 | 0.36 | 0.31 | 0.98 | 1.14 | |
| PHMB-treated dressing | 1 | 1.59 | 1.62 | 4.66 | 0.41 |
| 5 | 3.32 | 2.05 | 4.78 | 1.31 | |
| 15 | 3.31 | 2.22 | 7.39 | 2.97 | |
| 30 | 3.63 | 3.45 | 7.39 | 2.58 | |
* Data represents two different experiments being performed on different days with different inoculum populations.