Metal ions | 5 mM | 10 mM |
Residual activity (%) | Residual activity (%) | |
Control | 100.0 ± 2.12 | 100.0 ± 2.12 |
K+ | 100.0 ± 2.45 | 100.0 ± 1.19 |
Ca2+ | 100.0 ± 2.01 | 112.88 ± 0.24 |
Zn2+ | 100.0 ± 1.13 | 111.36 ± 0.40 |
Mg2+ | 106.89 ± 1.89 | 116.39 ± 1.67 |
Na+ | 115.86 ± 1.90 | 114.98 ± 1.66 |
Fe2+ | 115.82 ± 1.86 | 93.95 ± 0.23 |
Hg2+ | 91.21 ± 1.27 | 77.31 ± 0.83 |
Cu2+ | 78.34 ± 0.65 | 66.02 ± 3.31 |