Table 4.
Percentage of biofilm synthesis inhibition in different bacteria strains caused by Sm‐SeNPs, Bm‐SeNPs and Ch‐SeNPs
| Bacterial straina | Stenotrophomonas maltophilia‐SeNPs (μg ml−1) | Bacillus mycoides‐SeNPs (μg ml−1) | Chemically synthesized SeNPs (μg ml−1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 100 | 250 | 500 | 50 | 100 | 250 | 500 | 50 | 100 | 250 | 500 | |
| Pseudomonas aeruginosa PAO1 (1.10) | 40 ± 2.5 | 45 ± 3 | 70 ± 2.5 | 96 ± 1 | 33 ± 3 | 47 ± 6 | 63 ± 4.5 | 95 ± 1.2 | 9 ± 0.7 | 21 ± 2.1 | 74 ± 0.7 | 96 ± 1.4 |
| P. aeruginosa ATCC27853 (1.00) | 15 ± 0.7 | 30 ± 0.7 | 41 ± 0.7 | 66 ± 2.1 | 15 ± 4.2 | 17 ± 2 | 44 ± 2.8 | 64 ± 1 | 4 ± 1.4 | 10 ± 0.7 | 35 ± 2.1 | 44 ± 2 |
| P. aeruginosa INT (1.00) | 23 ± 1 | 34 ± 1 | 59 ± 3.5 | 95 ± 1 | 25 ± 4.5 | 29 ± 3.5 | 49 ± 2.5 | 94 ± 1.5 | 2 ± 3.5 | 2 ± 1.4 | 20 ± 0.7 | 30 ± 0.7 |
| P. aeruginosa CFC21 (1.20) | 66 ± 5 | 86 ± 0.5 | 95 ± 2 | 96 ± 1.5 | 37 ± 5.5 | 66 ± 3.5 | 93 ± 1.7 | 95 ± 2 | 10 ± 3.5 | 33 ± 3.5 | 71 ± 1.4 | 65 ± 1.4 |
| P. aeruginosa CFC20 (1.10) | 75 ± 0.5 | 82 ± 1 | 86 ± 1 | 93 ± 1.5 | 72 ± 2 | 76 ± 0.5 | 85 ± 1 | 91 ± 2 | 53 ± 0.7 | 81 ± 0.7 | 95 ± 1 | 95 ± 1 |
| P. aeruginosa CFCB (2.75) | 31 ± 1 | 69 ± 3 | 79 ± 2 | 88 ± 4 | 28 ± 1.5 | 34 ± 5 | 81 ± 4.5 | 85 ± 5 | 1 ± 0.5 | 1 ± 0.5 | 77 ± 0.7 | 98 ± 1 |
| P. aeruginosa CFCA (3.00) | 39 ± 1 | 94 ± 1 | 94 ± 3.5 | 96 ± 1 | 25 ± 5 | 25 ± 1.5 | 94 ± 0.5 | 96 ± 1 | 5 ± 0.7 | 6 ± 0.7 | 96 ± 1 | 97 ± 1.5 |
a
Quantity of biofilm in arbitrary units.
The percentage of inhibition was calculated relative to the quantity of biofilm formed by each strain in the absence of nanoparticles. Data are the average of results obtained in three different experiments. Percentages of inhibition higher than 80% are shown in bold.