Table 2.
Ostwald ripening rates (ω) of curcumin-loaded nanoemulsions prepared with various emulsifier systems at different homogenizing pressures
| Homogenizing pressure (psi) | Ratio of surfactants1) (wt %) | ω [×104 (nm)3/h] | R2 |
|---|---|---|---|
| 5,000 | Tween-20 (10) | 9.07 | 0.9808 |
| Tween-20 : SM (6:4) | 2.54 | 0.8446 | |
| Tween-20 : SL (6:4) | 1.91 | 0.8292 | |
| 10,000 | Tween-20 (10) | 11.65 | 0.9953 |
| Tween-20 : SM (6:4) | 1.72 | 0.8457 | |
| Tween-20 : SL (6:4) | 3.16 | 0.8972 | |
| 15,000 | Tween-20 (10) | 9.68 | 0.9876 |
| Tween-20 : SM (6:4) | 1.32 | 0.7879 | |
| Tween-20 : SL (6:4) | 2.76 | 0.9022 |
1)
Tween-20, polyoxyethylene (20) sorbitan monolaurate; SM, sorbitan monooleate; SL, soy lecithin.