The current investigation was conducted to study the effectiveness of
chitosan coating in preserving the internal quality of table eggs stored under tropical room conditions of 32 ± 1 °C and 60-70 % r. h. Internal, physical and microbiological quality of eggs coated with
chitosan was evaluated during 5-week storage at different temperature (22 ± 1 and 32 ± 1 °C).
Chitin was extracted from shrimp processing raw byproducts and deacetylated to high quality
chitosan. The prepared
chitosan was analyzed for its characteristic properties. The
chitosan with a viscosity of 2206 mPa.S was used to prepare the coating
solution. The
weight loss, Haugh unit, and yolk index values suggested that coating of eggs with shrimp α-
chitosan increased the shelf life of eggs by almost 4-week at 22 ± 1 °C and 3-week at 32 ± 1 °C compared with controls (non
chitosan coated and
acetic acid coated) eggs. Three-time repeated coating was more effective in preserving the internal quality and preventing
weight loss than with single-time coating of
chitosan on egg. Therefore, three-time coating of eggs with 2206 mPa.S
chitosan offer a protective barrier for preserving the internal quality of eggs stored at tropical room conditions and concomitantly prevent contamination with microorganisms.