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Effect of various metal ions and EDTA on the activity of recombinant β-mannanase from B. circulans NT 6.7
| Metal ions/Chemical | Relative activity (%) | |
|---|---|---|
| Extracellular enzyme | Intracellular enzyme | |
| Control | 100.00 | 100.00 |
| Co+ | 104.74 | 106.32 |
| Ca+ | 95.45 | 97.29 |
| Zn2+ | 97.50 | 92.24 |
| Mn2+ | 95.26 | 95.65 |
| Mg2+ | 94.32 | 95.46 |
| Li+ | 96.82 | 97.70 |
| Cu2+ | 79.05 | 64.08 |
| Fe2+ | 40.12 | 39.18 |
| EDTA | 32.00 | 37.95 |
