An Antioxidant and Intelligent pH-Sensitive Composite Film Based on Gelatin and Persian Gum Using Purple Carrot Extract

Table 1

Physicochemical properties of control Persian gum-gelatin film and active film with 45% purple carrot extract.

Physicochemical properties	Control	Active film
Moisture content (%)	A	B
Moisture absorption (%)	B	A
pH	A	B
Heat-sealing strength (Pa)	B	A
Thickness (μm)	A	A
Contact angle (°)	B	A

Data represent of three independent repeats. Different capital letters in each row indicate significant differences ().