Chitosan (ß-(1,4)-2-amino-2-deoxy-D-glucopyranose), mainly manufactured from crustacean shells (from crab, shrimp, crayfish,etc.), is derived by deacetylation of chitin This nontoxic, biodegradable and biocompatible
substance has antimicrobial and antioxidant properties,wound-healingproperties, as well as hemostatic activity, and it is receiving increased attention as a promising renewable polymeric material . Several reports indicate that chitosan has
potential in food packaging, especially as edible films and coatings.