Table 1.
Thickness, opacity, transparency, water vapor permeability (WVP), tensile strength, elongation and Young’s modulus of the gelatin films incorporated with mint essential oil (MEO) in different concentrations
| Formulations (% MEO) |
Thickness (µm) |
Opacity (%) |
Transparency (%) |
WVP (10−4 g mm/m2 Pa h) |
Tensile strength (MPa) |
Elongation (%) |
Young’s modulus (MPa) |
|---|---|---|---|---|---|---|---|
| Control (0) | 37.0 ± 4.0a | 11.0 ± 1.0a | 83.3 ± 1.1a | 1.55 ± 0.08a | 41.0 ± 2.0a | 13.3 ± 2.2ac | 1596 ± 60a |
| A1 (0.06) | 41.0 ± 1.3ab | 13.0 ± 1.0b | 82.0 ± 1.0ab | 1.12 ± 0.02b | 32.1 ± 3.0b | 18.1 ± 3.0b | 1118 ± 98bc |
| A2 (0.13) | 42.0 ± 3.3ab | 13.1 ± 1.0b | 81.2 ± 1.2ab | 1.11 ± 0.06b | 32.4 ± 2.0b | 17.0 ± 2.3ab | 1187 ± 106bc |
| A3 (0.25) | 43.0 ± 2.1ab | 14.0 ± 1.0b | 80.0 ± 1.0bc | 1.10 ± 0.07b | 32.0 ± 3.0b | 15.2 ± 2.0ab | 1258 ± 111b |
| A4 (0.38) | 43.0 ± 2.1b | 16.0 ± 1.0c | 77.4 ± 2.0cd | 1.46 ± 0.01a | 29.0 ± 2.1bc | 11.1 ± 2.0c | 1047 ± 82c |
| A5 (0.50) | 44.0 ± 2.0b | 18.0 ± 1.0c | 76.3 ± 1.3d | 1.51 ± 0.06a | 27.0 ± 3.0c | 10.0 ± 1.3c | 1048 ± 117c |
Equal superscript letters in the columns for the same parameter indicate that the samples do not differ significantly (p > 0.05)