Table 2.
Mutagenicity testing of NR-INF-02 in Salmonella typhimurium TAMix strain.
| Treatment | Concentration (µg/mL) | Number of revertants colonies | |||||
|---|---|---|---|---|---|---|---|
| S9 | Individual colony counts | Mean ± S.D | Fold increase over baseline | ||||
| R1 | R2 | R3 | |||||
| NR-INF-02 | 15.87 | − | 0 | 2 | 0 | 0.67 ± 1.15 | 0.67 |
| + | 0 | 0 | 0 | 0.00 ± 0.00 | 0.00 | ||
| 50.14 | − | 0 | 0 | 1 | 0.33 ± 0.58 | 0.33 | |
| + | 0 | 2 | 0 | 0.67 ± 1.15 | 0.37 | ||
| 158.46 | − | 0 | 0 | 2 | 0.67 ± 1.15 | 0.67 | |
| + | 2 | 1 | 2 | 1.67 ± 0.58 | 0.92 | ||
| 500.72 | − | 0 | 1 | 0 | 0.33 ± 0.58 | 0.33 | |
| + | 0 | 0 | 1 | 0.33 ± 0.58 | 0.18 | ||
| 1582.28 | − | 2 | 1 | 1 | 1.33 ± 0.58 | 1.33 | |
| + | 0 | 2 | 0 | 0.67 ± 1.15 | 0.37 | ||
| 5000.00 | − | 0 | 3 | 2 | 1.67 ± 1.53 | 1.67 | |
| + | 0 | 2 | 0 | 0.67 ± 1.15 | 0.37 | ||
| Vehicle control | 0 | − | 1 | 1 | 1 | 1.00 ± 0.00 | — |
| + | 0 | 0 | 2 | 0.67 ± 1.15 | — | ||
| Positive control 2-NF + 4-NQO | 2.00 + 0.50 | − | 48 | 48 | 48 | 48.00 ± 0.00* | 48.00 |
| Positive control 2-AA | 5.00 | + | 45 | 41 | 47 | 44.33 ± 3.06* | 24.35 |
R: replicate; *P < 0.05; 2-NF: 2-nitrofluorene; 4-NQO: 4-nitroquinoline-N-oxide; 2-AA: 2-aminoanthracene.