The Effect of Hypericum perforatum extract, Ferulago angulata Extract and Vitamin C on the Physical, and Mechanical Characteristics of Tragacanth Film

In this study, the physical and mechanical properties of tragacanth film incorporated with different antioxidant compounds including Hypericum perforatum extract, Ferulago angulata extract and vitamin C 25% (w/v) were studied. Adding Hypericum perforatum extract, Ferulago angulata extract and vitamin C reduced the moisture content and the solubility of the tragacanth film (p<0.05). The lowest amount of the solubility was observed in the tragacanth film containing vitamin C (51.59%) and Hypericum perforatum extract (52.05%). The amount of water vapor permeability (WVP) decreased in the tragacanth film containing vitamin C (1.68±0.06×10-7 gs-1m-1Pa-1 ), and in the films containing extracts increased significantly (p<0.05). Adding both extract and vitamin C to the tragacanth film decreased the mechanical properties of the film. Also, the lowest amounts of opacity were observed in the tragacanth film and tragacanth film containing vitamin C 1.72 and 0.98, respectively (p<0.05). The lowest amount of light transmission was observed in the tragacanth film containing Hypericum perforatum and Ferulago angulata extract (p<0.05).