1. Abstract
2. This research investigated the viability of using Hibiscus Sabdarifa sepal mucilage (HSSM) in conjunction with glycerol (10, 15 and 20%, w/w) and carboxymethyl cellulose (1%, w/w) to create a new biodegradable edible film. The microstructural, thermal, mechanical, physical, and antioxidant activities of the films made for use in the packaging sector were tested and assessed. Overall, the results demonstrated that increasing the percentage of glycerol in the optimal amount of Hibiscus Sabdarifa sepal mucilage increased the film thickness, moisture content, solubility, water vapor permeability, and elongation at break (EB%). Significant reductions were seen in the tensile strength, melting point, and glass transition temperature (Tg). The color of the films indicated that, despite becoming faintly green or crimson as the glycerol concentration increased, they remained transparent. In addition, the produced film exhibited notable antioxidant properties. Compared to films without glycerol, glycerol-containing film samples exhibited a uniform surface morphology devoid of cavities and fractures in electron microscope images. In combination with carboxymethyl cellulose, the sepal mucilage of Hibiscus Sabdarifa, a novel and innovative source, led to the production of biodegradable edible films with desirable properties.
3. Keywords: Hibiscus Sabdarifa sepal mucilage; Carboxymethyl cellulose; Biodegradable edible films
4. 1. Introduction
5. Food packaging is crucial for ensuring the quality, safety, and safety of food goods while also extending their shelf life. One of the most crucial methods for protecting food items' integrity throughout storage, transit, and product delivery is packaging. Global plastic production and consumption have been rising recently as a result of economic expansion and population growth. The increasing use of synthetic polymer-based food packaging may generate environmental contamination, which can be exacerbated by plastics' inability to biodegrade. Additionally, the release of chemical monomers from plastics that have been heated and exposed to sunlight may be harmful to people's health. Food packaging uses a significant portion of the plastics produced each year. Because of this, two thirds of all packaging waste comes from food packaging [1,2].