Efficacy of Chitosan-Cloisites—Nanocomposite as Sustainable Coatings on Storage Stability of Fresh Eggs

Abstract

Fresh eggs can quickly lose their high quality if the necessary care is not taken during storage. Biocoating the fresh eggs may be a valuable option. The current study focused on developing sustainable chitosan biocoatings by adding different Cloisite clays (Cloisite 15A, 20A, and 30B) into chitosan biocoatings to seek enhancement effects on the fresh eggshell storability. The variables measured were weight loss (WL), Haugh unit (HU), yolk index, pH measurements, soluble solids, relative whipping capacity and foam stability, color analysis, lipid oxidation, viscosity, and eggshell breaking strength. The coatings increased the eggshell's storability by sealing its pores, which decreased breakage and minimized mass transfer. As a result, the lower WL occurred in the Cloisite-coated groups. The WL, which was 6.63% in the control group, was 3.63% in the group coated with chitosan-Cloisite15A combination at week 4. The HU of samples with chitosan-Cloisite15A and chitosan-Cloisite20A (60.14) had the highest HU, significantly. Chitosan-Cloisite 30B (58.78), pure chitosan (53.85), while the control (45.60) was the lowest HU. The TBARS values were measured as follows: control 1.01; chitosan 0.61, chitosan-Cloisite15A 0.39, chitosan-Cloisite20A 0.42, and chitosan-Cloisite30B 0.47 mg of malondialdehyde/kg. Cloisite15A were found to be the most effective for improving storage stability and Cloisite30 B for enhancing breaking strength. Biocoatings with Cloisite (15A, 20B, and 30B) could enhance qualities for at least 2 weeks longer.