| Compd. | Absorbance | (A) | Inhibition | (100%) | Compd. | Absorbance | (A) | Inhibition | (100%) |
| 100/μg∙mL−1 | 10/μg∙mL−1 | 100/μg∙mL−1 | 10/μg∙mL−1 | 100/μg∙mL−1 | 10/μg∙mL−1 | 100/μg∙mL−1 | 10/μg∙mL−1 | ||
| control group | 0.17 |
| Dy-L1 | 0.07 | 0.16 | 58.8 | 5.9 | ||
| La-L1 | 0.06 | 0.15 | 64.7 | 11.8 | La-L2 | 0.02 | 0.07 | 88.2 | 58.8 |
| Nd-L1 | 0.07 | 0.12 | 58.8 | 29.4 | Sm-L2 | 0.02 | 0.07 | 88.2 | 58.9 |
| Sm-L1 | 0.07 | 0.12 | 58.8 | 29.4 | Eu-L2 | 0.02 | 0.08 | 88.2 | 52.9 |
| Eu-L1 | 0.06 | 0.10 | 64.7 | 41.2 | Dy-L2 | 0.01 | 0.07 | 94.1 | 58.8 |