Research Article
An Antioxidant and Intelligent pH-Sensitive Composite Film Based on Gelatin and Persian Gum Using Purple Carrot Extract
Table 2
FTIR peak assignments of control Persian gum-gelatin film and active film with 45% purple carrot extract.
| Wavenumber (cm-1) | Assignments |
| 3284.47 | -OH stretching vibrations | 2932.71 | -CH2- and > CH-stretching and bending vibrations | 1655.46 | stretching vibration and stretching vibration | 1411.83 | stretching vibration | 1335.46 | HCOO- | 1238.48 | -OH bending vibration | 1106.07 | C-N (aliphatic amine) | 1031.45 | C-O-C stretching vibrations of glycosidic bonds | 485.37 | C-C-O and C-O-C |
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