chitosanChitin is a linear polymer of 1,4-linked N-acetyl-D-glucosamine, which looks like 1,4-D-anhydroglucopyranosechain of cellulose except for the acetamide group at C-2 positionof anhydroglucopyranoside residue. Similarly to cellulose, nativechitin occurs in fibrous crystalline states, i.e. microfibrils