Table 1.
Concentrations (mg/L) | A490nm (-x ± s) | Inhibition rate (%) | t vs control |
0 (control) | 0.9325 ± 0.0337 | ||
12.5 | 0.5275 ± 0.0440bd | 43.29 ± 6.11 | 16.68 |
25 | 0.4025 ± 0.0440b | 56.90 ± 3.71 | 51.20 |
50 | 0.3950 ± 0.0593b | 57.74 ± 5.37 | 37.43 |
75 | 0.4038 ± 0.0245b | 56.61 ± 3.61 | 29.10 |
100 | 0.3913 ± 0.0323b | 58.05 ± 3.05 | 46.20 |
150 | 0.3188 ± 0.0236bd | 65.78 ± 2.83 | 42.30 |
200 | 0.2588 ± 0.0270bd | 72.25 ± 7.75 | 53.79 |
aP < 0.05,
P < 0.01 vs 0 mg/L group; cP < 0.05,
P < 0.01 vs 25 mg/L group.