Table 3.
Gold content, root extract content, hydrodynamic size, zeta potential and Au/root extract ratios of the AuNPRn.
| Sample | [Au] * mg/mL |
Ratio Au/Root Extract |
SPR λmax (nm) |
Hydrodynamic Size (PDI) (nm) |
Zeta Potential (ζ) (mV) |
|---|---|---|---|---|---|
| AuNPR1 | 3.05 ±0.15 | 0.56 | 625 | 280.2 (0.23) | −52 ± −7 |
| AuNPR2 | 3.23 ±0.65 | 0.44 | 587 | 150.0 (0.2) | −46 ± −7 |
| AuNPR3 | 2.81 ± 0.14 | 0.38 | 618 | 60.7 (0.22) | −62 ± −11 |
| AuNPR4 | 1.94 ± 0.10 | 0.24 | 601 | 32.3 (0.35) | −56 ± −9 |
| AuNPR5 | 4.04 ± 0.20 | 0.73 | 628 | 209.8 (0.28) | −60 ± −9 |
* Determined by PIXE.