TABLE 2.
Additive | Concentration | Relative activity (%) |
---|---|---|
Control | 100 | |
Ca2+ | 1 mm | 90 |
Mg2+ | 1 mm | 77 |
Cu2+ | 1 mm | 46 |
Hg2+ | 10 mm | 02 |
K+ | 1 mm | 73 |
Zn2+ | 1 mm | 62 |
SDS | 0.05% | 50 |
Urea | 4 mm | 60 |
EDTA | 1 mm | 103 |
Triton X-100 | 1% | 92 |
2-Mercaptoethanol | 1% | 111 |