Banana Peel Cellulose Nanofibers (CNFs) as Retrofitting Material to Soy-Protein in Manufacturing Biodegradable Food Packaging

Abstract

Purpose: The aim of this study is to examine the potential of Cellulose Nanofiber(CNF) isolated from the banana peel through chemical treatment(Alkaline Treatment, Bleaching and Acid Hydrolysis) as reinforcing agent in Soy Protein Isolate films. It also aims to find an application for this agro-industrial residue as a biodegradable material for food packaging. Study Design: Experimental Design. Materials and Methods: Chemicals such as Sodium metabisulfite, Ethanol, Potassium hydroxide, Sodium hypochlorite, Acetic Acid, Sulfuric acid, Glycerol, Sodium Hydroxide, and Hydrochloric Acid were bought from a chemical depot. FTIR Spectroscopy, SEM Imaging, Tensile Strength Test, Dimensional Stability to Heat Test were performed. Results: The results of the tests conducted(FTIR Spectroscopy, SEM Imaging, Tensile Strength Test, Dimensional Stability to Heat Test and Stability in Acidic and Alkaline Conditions Test) showed that CNFs isolated from the banana effectively reinforced the properties of Soy Protein Isolate films. Furthermore, the films fabricated are still biodegradable, displaying that the addition of the CNF does not have any significant effect on the biodegradability of the films. Conclusion: It is concluded that the addition of Banana Peel CNFs as retrofitting material to the Soy Protein Films materially strengthen the mechanical properties of the films and makes it more suitable for food packaging applications.