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| Type | Model | Equation | Correlation Coefficient (R2) |
|---|---|---|---|
| Paeonol | Zero Order | Q = 0.0227x + 0.5484 | 0.3906 |
| First Order | Q = 0.9071 × (1 – e–0.5349t) | 0.9922 | |
| Higuchi | Q = 0.1568 t1/2 + 0.344 | 0.6508 | |
| Paeonol ethosomes | Zero Order | Q = 0.0115x + 0.2361 | 0.4972 |
| First Order | Q = 0.4171 × (1 – e–0.4674t) | 0.9745 | |
| Higuchi | Q = 0.0154t1/2 + 0.344 | 0.7473 |
