Table 2 Aldehyde dehydrogenase levels in whole homogenates of earthworm, viz., M. posthuma, exposed to different heavy metal treatments for three consecutive weeks
Treatment | Concentration (ppm) | ALDH activity (mIU/mg protein) | ||
|---|---|---|---|---|
Week 1 | Week 2 | Week 3 | ||
None (control) | Zero | 119.7 ± 5.02 | 62.3 ± 3.3 | 85.3 ± 3.7 |
Lead | 5 | 240.6 ± 4.4 | 832.6 ± 12.1 | 944.5 ± 5.9 |
10 | 172.2 ± 5.9 | 305.7 ± 8.6 | 696.3 ± 8.4 | |
15 | 146.8 ± 3.5 | 268.4 ± 8.3 | 595.5 ± 8.9 | |
20 | 117.2 ± 8.4 | 237.3 ± 7.5 | 265.2 ± 3.1 | |
Cadmium | 5 | 452.5 ± 10.6 | 664.8 ± 11.9 | 1871.7 ± 6.7 |
10 | 314.4 ± 6.5 | 498.6 ± 10.8 | 1132.7 ± 12.6 | |
15 | 288.7 ± 12.4 | 475.3 ± 7.8 | 563.5 ± 8.6 | |
20 | 218.2 ± 3.1 | 184.2 ± 5.1 | 348.8 ± 3.7 | |