Table 2.
Antimicrobial activities of inorganic NPs (select examples)
| NP type | bacteria species | Log reductiona | Concentration (μg/mL) |
|---|---|---|---|
| ZnO (12, 45 nm)52 | E. coli | 2 | 4,100 b |
| colloidal ZnO + UV49 | E. coli | 6 | 2,000 |
| ZnO (8 nm) + light51 | S. aureus/MRSA | 2 | 163 b |
| ZnO pyramids (<20 nm)53 | S. aureus/MRSA | 4 | 400 |
| ZnO (<50 nm)54 | C. jejuni | 3 | 25 |
| Zn0.9 Fe0.1O (11 nm)55 | S. aureus | 6 | 300 |
| colloidal TiO2 + UV49 | E. coli | 6 | 2,000 |
| CuO (48 nm)54 | C. jejuni | 3 | 6.3 |
| Cu (9.3 nm)56 | E. coli | 3 | 160 |
| Ag2O (17.5 nm)57 | E. coli P. aeruginosa | 3 | 18 |
| Ag (3.3 nm)56 | E. coli | 3 | 60 |
| Ag (3.3 nm) 56 | S. aureus | 3 | 160 |
| Ag (21 nm)54 | Salmonella ssp. | 3 | 50 |
| Ag (21 nm)54 | C. jejuni | 3 | 6.3 |
| Ag@SiO2–HPIX + light17 | E. coli A. baumannii | 6 | 24.5 b |
| This work | S. aureus/MRSA | 6 | 5.8 |
a
Based on CFU/mL of plated serial dilutions.
b
Value derived from quantities provided in studies.