Table 2.
DLS measurements of hydrodynamic mean size (Zav, nm), polydispersity index (PDI) and surface charge (Zeta potential, mV) of the nanomaterials (NMs) dispersions in cell culture medium (14 µg/mL), with and without digestion simulation. Results are presented as mean ± SD (n = 3).
| NM | Undigested | Digested | ||||
|---|---|---|---|---|---|---|
| Zav (nm) | PDI | Zeta Potential (mV) | Zav (nm) | PDI | Zeta Potential (mV) | |
| NM-102 | 551.30 ± 46.53 | 0.49 ± 0.14 | −22.0 ± 2.8 | 560.78 ± 254.75 | 0.70 ± 0.08 | −21.4 ± 1.5 |
| NM-103 | 545.10 ± 490.87 | 0.58 ± 0.43 | −27.0 ± 0.6 | 478.60 ± 199.97 | 0.77 ± 0.15 | −26.8 ± 0.4 |
| NM-105 | 292.40 ± 0.85 | 0.73 ± 0.21 | −22.2 ± 2.0 | 190.40 * ± 9.33 | 0.52 ± 0.36 | −26.7 ± 0.8 |
* significantly different from undigested sample (p = 0.0042, Student’s t-test).