Comparison of the influence of oil content and pH on the mean droplet size and zeta potential of nanoemulsions stabilized by 15 min sonication using saponin (SOR 2 : 10 wt%).
| Oil content (wt%) | pH | Mean droplet diameters after 1 day (nm) | Zeta potential (mV) | Mean droplet diameters after 30 days (nm) |
|---|---|---|---|---|
| 10 | 4 | 146.6 ± 7.3 | −54.0 | 146.3 ± 1.4 |
| 7 | 153.8 ± 1.2 | −60.3 | 152.8 ± 2.0 | |
| 20 | 7 | 148.4 ± 0.8 | −63.0 | 147.4 ± 0.8 |
| 30 | 7 | 147.0 ± 1.6 | −62.5 | 145.46 ± 4.8 |
| 40 | 7 | 141.3 ± 10.2 | −59.8 | 142.2 ± 3.9 |
| 50 | 4 | 148.7 ± 6.3 | −53.5 | 152.4 ± 3.7 |
| 7 | 138.5 ± 9.5 | −59.8 | 139.8 ± 11.0 | |
| 60 | 4 | 186.7 ± 6.8 | −49.1 | 187.6 ± 1.1 |
| 7 | 170.1 ± 1.6 | −66.7 | 173.8 ± 5.1 |