Characterization of antioxidant active biopolymer bilayer film based on gelatin-frankincense incorporated with ascorbic acid and essential oil.

In this study, a bio-based bilayer edible film based on gelatin/frankincense, with the incorporation of different concentrations of Ascorbic acid (AA) (0, 1, 2%) into the inner layer (gelatin) and (HO) (0, 0.75, 1.5%) essential oil in the outer layer () was prepared.