Table 5. Effect of metal ions and halides on SN4LAC activity.
| Metal Ions | Conc. (mM) | Relative Activity (%) |
| Control | - | 100 |
| CuSO4.5H2O | 1.0 | 106.56±1.36 |
| 5.0 | 126.09±1.54 | |
| CaSO4.2H2O | 1.0 | 83.66±1.58 |
| 5.0 | 75.47±0.92 | |
| NiSO4.6H2O | 1.0 | 86.25±1.85 |
| 5.0 | 76.84±1.58 | |
| HgSO4 | 1.0 | 51.99±1.47 |
| 5.0 | 26.60±1.22 | |
| MgSO4.7H2O | 1.0 | 99.18±0.70 |
| 5.0 | 76.99±1.22 | |
| MnSO4.H2O | 1.0 | 83.59±1.10 |
| 5.0 | 79.48±0.66 | |
| LiSO4.H2O | 1.0 | 82.38±1.51 |
| 5.0 | 77.81±0.84 | |
| CoSO4.7H2O | 1.0 | 117.98±2.50 |
| 5.0 | 150.69±1.81 | |
| FeSO4.7H2O | 1.0 | 76.43±0.96 |
| 5.0 | 41.47±1.37 | |
| ZnSO4.7H2O | 1.0 | 77.34±1.33 |
| 5.0 | 67.47±1.61 | |
| Al2(SO4)3.16H2O | 1.0 | 82.94±2.63 |
| 5.0 | 71.07±2.21 | |
| NaF | 100 | 85.77±1.45 |
| 500 | 75.91±2.58 | |
| NaCl | 100 | 85.61±3.23 |
| 500 | 75.23±1.36 | |
| NaBr | 100 | 76.88±4.56 |
| 500 | 75.33±3.25 | |
| NaI | 100 | 84.69±3.45 |
| 500 | 79.02±2.25 |
Values represent mean ± SD (n = 3) relative to untreated control sample.