Table 4 Effect of metal cations on miswak α-amylases
From: Purification and characterization of α-Amylase from Miswak Salvadora persica
Metal | Relative activity % | ||||
|---|---|---|---|---|---|
A1 | A4a | A4b | A5a | A5b | |
Ni2+ | 43 | 205 | 131 | 103 | 40 |
Ca2+ | 108 | 152 | 141 | 110 | 195 |
Co2+ | 17 | 242 | 139 | 111 | 98 |
Zn2+ | 18 | 217 | 42 | 112 | 27 |
Cu2+ | 34 | 114 | 103 | 65 | 85 |
Pb2+ | 86 | 90 | 99 | 85 | 82 |
Hg2+ | 1 | 5 | 2 | 2 | 2 |