Table 2 Bacterial cell recovery from sandstone and limestone blocks treated with silicon (S) and acrylic (AC) polymers impregnated with copper nanoparticles
From: Antimicrobial potential of consolidation polymers loaded with biological copper nanoparticles
Bacterial strains | Bacterial cell number (x104 CFU/ml) | ||||
|---|---|---|---|---|---|
| Â | Control | Limestone blocks | Sandstone blocks | ||
| Â | Â | S/CuNPs | AC/CuNPs | S/CuNPs | AC/CuNPs |
Escherichia coli | 75.8 ± 0.9 | 5.2 ± 0.3** | 9.9 ± 0.4** | 7.5 ± 0.6* | 8.3 ± 0.3** |
Streptomyces parvulus | 95.3 ± 0.7 | 6.3 ± 0.5* | 4.5 ± 0.2** | 4.6 ± 0.4** | 7.6 ± 0.6** |
Bacillus subtilis | 84.7 ± 0.6 | 5.8 ± 0.6** | 4.2 ± 0.3** | 3.9 ± 0.3** | 4.4 ± 0.1** |