Table 5.
Biovolume (thousands of µm3 in the observation field of 14.2 × 103 µm2) of twenty-four-hour-old biofilms of several Salmonella strains of food origin after exposure to different concentrations of benzalkonium chloride (BZK).
| SEROTYPE | Strains Exposed to: | |||
|---|---|---|---|---|
| Nonexposed | BZK-1000 ppm | BZK-5000 ppm | BZK-10,000 ppm | |
| Salmonella Agona | 23.6 ± 4.6aab | 177.8 ± 50.5bd | 10.2 ± 1.1aa | 8.2 ± 7.4aab |
| Salmonella Anatum | 54.0 ±11.7bbcd | 24.5 ± 9.7aa | 10.2 ± 1.5aa | 11.8 ± 6.5aab |
| Salmonella Enteritidis | 17.5 ± 12.2aab | 121.9 ± 58.3bbc | 13.9 ± 1.7aabc | 4.7 ± 4.2aab |
| Salmonella Hadar | 71.8 ± 24.8ccd | 57.3 ± 4.6bcab | 30.9 ± 4.4abd | 10.3 ± 0.7aab |
| Salmonella Infantis | 31.7 ± 14.1ababc | 51.6 ± 19.1bab | 10.5 ± 4.2aab | 2.9 ± 1.2aa |
| Salmonella Kentucky | 76.5 ± 34.1bd | 19.8 ± 3.8aa | 11.3 ± 4.0aab | 9.9 ± 1.8aab |
| Salmonella Thompson | 27.9 ± 1.5babc | 63.0 ± 7.3cab | 17.2 ± 3.4ababcd | 14.2 ± 1.5ab |
| Salmonella Typhimurium | 47.5 ± 6.3babcd | 14.2 ± 8.8aa | 21.1 ± 3.9aabcd | 14.1 ± 1.3ab |
| Salmonella 1,4,(5),12:i- | 8.2 ± 1.3aa | 125.7 ± 50.1bbc | 26.9 ± 13.2acd | 4.1 ± 0.8aab |
| Salmonella Virchow | 22.5 ± 1.0bcab | 16.5 ± 3.4ba | 25.4 ± 3.2cbcd | 8.0 ± 1.0aab |
For interpretation, see Table 1.