1. Introduction. Although chitin, which is the main component of exoskeletons of crustaceans such as crab and shrimp, is the second most abundant biopolymer in nature, synthesized at a rate of 10 10 –10 11 tons per year (Muzzarelli, 2012), most chitin is thrown away as industrial waste.Chitosan is produced by deacetylation of chitin and has a cationic linear …
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