Table 2.
Thermal properties of pectin-based films.
| Formulation | Tmax (°C) | Tg (°C) | OOT (°C) |
|---|---|---|---|
| PC | 231 ± 1 a | 52 ± 1 a | 202 ± 1 a |
| PC-1ZnO | 229 ± 1 a | 51 ± 2 a | 202 ± 1 a |
| PC-3ZnO | 239 ± 2 b | 51 ± 1 a | 214 ± 2 b |
| PC-5E | 229 ± 1 a | 53 ± 2 a | 206 ± 1 c |
| PC-5E-1ZnO | 230 ± 1 a | 53 ± 1 a | 205 ± 1 c |
| PC-5E-3ZnO | 229 ± 1 a | 52 ± 1 a | 207 ± 2 c |
Mean ± SD, n = 3. Different superscripts within the same column indicate significant differences between formulations (p < 0.05). OOT. Oxygen onset temperature. Tmax. Temperature of maximum degradation rate. Tg. Glass transition temperature.