Table 5.
UV/Vis characteristics of CAS-positive HPLC-purified fractions of N. mangyaensis H1 in the presence of various metals.
| Metals | Fraction 3 | Fraction 9–10 | Fraction 11 | Fraction 14 |
|---|---|---|---|---|
| No metal | 320 nm | 280, 330 nm | 250, 310 nm | 270 nm |
| Co2+ | NM | NM | NM | 400 nm |
| Al3+ | NM | NM | NM | 400 nm |
| Ni2+ | NM | NM | NM | 400 nm |
| Fe3+ | 240–250 nm | 240–250 nm | 240–250 nm | 240, 250, 400 nm |
| Zn2+ | NM | NM | NM | 400 nm |
| Mn2+ | NM | NM | NM | 400 nm |
| Cu2+ | NM | 310 nm | NM | 400 nm |
| Ga3+ | NM | 300, 310 nm | 280 nm | 400 nm |
*NM—not modified. The UV/visible absorbance remains unaltered when compared to the spectrum of the metal-free fraction. Each of the fractions was dissolved in water.