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