TABLE 2.
Energy densities and germicidal efficiencies for the inactivation of a range of bacterial species using narrow-spectrum 405-nm light
| Organisma | Dose (J cm−2) | Log10 reduction | Dose/log10 reduction | GE (% uncertainty)b |
|---|---|---|---|---|
| Staphylococcus aureus | 36 | 5 | 7.2 | 0.14 (±2) |
| MRSA | 45 | 5 | 9 | 0.11 (±0) |
| Staphylococcus epidermidis | 42 | 4.6 | 9.1 | 0.11 (±4) |
| Clostridium perfringens | 45 | 4.4 | 10.2 | 0.10 (±2) |
| Streptococcus pyogenes | 54 | 5 | 10.8 | 0.09 (±5) |
| Acinetobacter baumannii | 108 | 4.2 | 25.7 | 0.04 (±7) |
| Proteus vulgaris | 144 | 4.7 | 30.6 | 0.03 (±5) |
| Pseudomonas aeruginosa | 180 | 4.2 | 42.9 | 0.02 (±4) |
| Klebsiella pneumaniae | 180 | 3.9 | 46.2 | 0.02 (±8) |
| Escherichia coli | 180 | 3.1 | 58.1 | 0.02 (±5) |
| Enterococcus faecalis | 216 | 2.6 | 96 | 0.01 (±0) |
a
Bacterial species are listed in decreasing order of germicidal efficiency.
b
GE, germicidal efficiency, calculated as log10(N/N0 per J cm−2). Values including percent uncertainty are for the experimental results in this study (calculated using GE values to three decimal places). A value of 0% uncertainty indicates no differences in the calculated GE values.