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Changes in pH values of the gel formulations prepared during the storage period of 1 months (mean ± SE; RH = relative humidity).
| Storage Condition | Storage Day | R1 (Chitosan-based gel formulation containing vitexin | F1 (Blank Gel Formulation) |
|---|---|---|---|
| 25 ± 1 ◦C | 0 | 4.1 ± 0.1 | 3.6 ± 0.05 |
| 30 | 4.1 ± 0.1 | 3.6 ± 0.1 | |
| 4 ± 1 ◦C | 0 | 4.1 ± 0.1 | 3.6 ± 0.05 |
| 30 | 4.1 ± 0.1 | 3.7 ± 0.05 | |
| 40 ± 1 ◦C 60% | 0 | 4.1 ± 0.1 | 3.6 ± 0.05 |
| 30 | 4.2 ± 0.05 | 3.8 ± 0.1 | |
