Table 5.
Antibacterial activity of polyacrylonitrile (PAN) containing Zinc Oxide (PAN-ZnO) nanoparticles at 3 wt.% against Staphylococcus aureus CECT240 (ATCC 6538p) and Escherichia coli CECT434 (ATCC 25922) after 1, 3, 6, and 8 h exposure. R corresponds to the reduction value.
| Microorganism | Time (h) | Control Log (CFU/mL) |
PAN-ZnO3 Log (CFU/mL) |
R |
|---|---|---|---|---|
| S. aureus | 1 | 6.01 ± 0.11 | 3.76 ± 0.21 | 2.25 |
| 3 | 6.86 ± 0.17 | 3.68 ± 0.15 | 3.18 | |
| 6 | 7.18 ± 0.19 | 3.10 ± 0.18 | 4.08 | |
| 8 | 7.86 ± 0.13 | 2.99 ± 0.17 | 4.87 | |
| E. coli | 1 | 5.98 ± 0.09 | 3.96 ± 0.11 | 2.02 |
| 3 | 6.36 ± 0.10 | 3.29 ± 0.13 | 3.07 | |
| 6 | 7.01 ± 0.14 | 3.32 ± 0.10 | 3.69 | |
| 8 | 7.88 ± 0.11 | 3.28 ± 0.15 | 4.60 |