Table 3 Antimicrobial effect of liquids on ca. 106 CFU per mL of Pseudomonas aeruginosa added. Number of CFU per mL solution at time intervals
From: Pseudomonas aeruginosa contamination of mouth swabs during production causing a major outbreak
The outbreak strain of P. aeruginosa | ||||||
|---|---|---|---|---|---|---|
Liquids | Sample taken immediately after adding | 15 min. | 3 hours | 6 hours | 24 hours | Reduction of CFU after exposure |
Control. Peptone water | 1,0 × 10 6 CFU/mL | Not done | Not done | 1,0 × 106 CFU/mL | Not done | No significant change in CFU after 6 hours |
Dent-O-Sept solution | No growth in sample diluted 1:100 * | 1 CFU/mL | No growth | No growth | No growth | 6 log reduction in 15 min. |
Dent-O-Sept solution diluted 1:10 | 1 × 106 CFU/mL | 1–5 × 103 CFU/mL | < 10 CFU/mL | No growth | No growth | 2–3 log reduction in 15 min. 6 log reduction in 3–6 hours |
The reference strain ATCC 9027 of P. aeruginosa | ||||||
Liquids | Sample taken immediately after adding | 15 min. | 3 hours | 6 hours | 24 hours | Reduction of CFU after exposure |
Control. Peptone water | 1,5 × 10 6 CFU/mL | Not done | Not done | 1,4 × 106 CFU/mL | Not done | No significant change in CFU after 6 hours |
Dent-O-Sept solution | No growth in sample diluted 1:10 * | 1 CFU/mL | No growth | No growth | No growth | 6 log reduction in 15 min. |
Dent-O-Sept solution diluted 1:10 | Ca. 106 CFU/mL | No growth | No growth | No growth | No growth | 6 log reduction in 15 min. |