TABLE 2.
Bactericidal activity of H2O2
| Organism | CFU/ml (106) ± SDa in suspensions treated with:
|
||||||
|---|---|---|---|---|---|---|---|
| 0 mMH2O2 | 0.05 mM H2O2 | 0.1 mM H2O2 | 0.5 mM H2O2 | 1mM H2O2 | 2mM H2O2 | 5 mM H2O2 | |
| C. violaceum BS | 6.6 ± 2.7 | 1.7 ± 0.4* | 0.85 ± 0.6* | 0.05** | 0.002** | ND | 0** |
| C. violaceum ATCC 6357 | 1.4 ± 0.5 | 1.67 ± 0.98 | 1.6 ± 0.17 | 1.1 ± 0.4 | 1.37 ± 0.13 | ND | 0** |
| B. cepacia BS | 7.4 ± 0.7 | 5.6 | 4.9 ± 0.14 | 5.2 ± 1 | 3.0** | 0** | 0** |
| B. cepacia 4A | 2.4 ± 0.4 | ND | ND | ND | 0.01** | 0** | ND |
| B. cepacia 8D | 7.65 ± 0.35 | ND | ND | ND | 0.15** | 0** | ND |
a
The results shown are the means ± standard deviations from three independent experiments, each performed in duplicate. ND, not done. Significant differences between results with 0 mM H2O2 and various concentrations of H2O2 are indicated by the following symbols: *P < 0.05, and **P < 0.01.