Preparation and characterization of gelatin-based films with the incorporation of centella asiatica (L.) urban extract

Abstract

This study aimed to investigate the functional and antioxidant properties of chicken skin gelatin (CSG) films incorporated with Centella asiatica (L.) urban extract. Film formulations with different amounts of C. asiatica extract (0, 0.3 and 0.7 g) were prepared under mechanical stirring at a temperature of 45°C. Results revealed that CSG film with 0.7 g C. asiatica was optimal due to its high elongation at break (EAB) (249.62%) and low water vapor permeability (WVP) (1.09 x 10-9 kPa) rate. The FTIR assay presented a strong carboxyl group, while XRD revealed amorphous characteristics at a peak of 2Ɵ=20º. The film with 0.7 g C. asiatica extract also showed the highest antioxidant properties for DPPH (68.67%), total phenolic content (10.79 mg/mg gallic acid), and reducing power (14.4%). In conclusion, CSG film incorporated with C. asiatica extract has remarkable potential as an active film material, as it may have a positive influence on the environmental concern.