Chitosan (MW 30000) (Deacetylated chitin (MW 30000) ) is a polycationic linear polysaccharide derived from chitin with the molecular weight of 30000. Chitosan is an versatile biomaterial because of its non-toxicity, low allergenicity, biocompatibility and biodegradability. Chitosan also has antitumor, antibacterial, antifungal, and antioxidant activities[1][2].