| Absorbance | Solvent of Extraction | Species |
| 0.009 | Water | Acacia nilotica |
| 0.011 | 80% Methanol | |
| 0.012 | 70% Acetone | |
| 0.008 | Water | Acacia seyal |
| 0.008 | 80% Methanol | |
| 0.008 | 70% Acetone | |
| 0.010 | Water | Acacia senegal |
| 0.008 | 80% Methanol | |
| 0.011 | 70% Acetone | |
| 0.013 | Water | Mimosa (Acacia mearnsii) |