Development and Characterization of Edible Films Based on Gelatin/Chitosan Composites Incorporated with Zinc Oxide Nanoparticles for Food Protection

Abstract

Globally produced food products spoil before they reach consumers. Therefore, active biodegradable packaging is needed to overcome cases of global environmental pollution due to plastic waste, and it is hoped that it can keep food products from reaching the sales stage. Gelatin (G), is one of the potential edible film raw materials. However, its weak water barrier and mechanical properties have limited its wide application. The combination of zinc oxide nanoparticles (ZnONP) and chitosan nanofiber (CHNF) is anticipated to enhance the G film's mechanical and barrier characteristics as well as provide antioxidant and antibacterial capabilities. Characterization results using FTIR, SEM, and DSC showed good compatibility between the G, CHNF, and ZnONP matrixes. The results of the packaging tests revealed that composite films based on gelatin, CHNF, and ZnONP showed potential as a functional material for food packaging.