Table 3.
Decolourization of three dyes at different dye concentrations*.
| Decolourization (%) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| Methyl orange |
Crystal violet |
Malachite green |
|||||||
| Dye concentration (μmol·L−1) | 1 h | 2 h | 4 h | 1 h | 2 h | 4 h | 1 h | 2 h | 4 h |
| 2.5 | 25.9 | 50.5 | 76.9 | 63.7 | 81.4 | 96.3 | 80.5 | 90.2 | 96.5 |
| 5 | 16.1 | 41.2 | 53.5 | 55.1 | 77.8 | 89.9 | 75.5 | 86.1 | 90.9 |
| 10 | 10.3 | 35.6 | 47.6 | 44.2 | 67.1 | 78.6 | 69.2 | 82.2 | 84.1 |
| 20 | 5.3 | 21.1 | 44.7 | 41.2 | 57.9 | 73.2 | 60.4 | 79.3 | 82.1 |
| 30 | 2.9 | 8.6 | 17.9 | 22.8 | 45.7 | 65.6 | 44.6 | 70.2 | 73.5 |
| 40 | 1.3 | 5.2 | 11.4 | 16.0 | 31.8 | 55.8 | 38.7 | 58.3 | 64.2 |
*Effects of dye concentration on decolourization by purified enzyme. The specific decolourization measurements were performed at optimum pH and temperature and concentration of redox mediators. Data are values obtained in triplicate assays with variations of <5%.