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Chitosans are naturally occurring biologically safe and non-toxic polymer of polysaccharides. In the present study, Chitosan [(1-4) 2-amino-2-deoxy-β-D-glucan] was extracted from the exoskeleton of Black Tiger (Penaeus monodon) shrimp shells by alkaline deacetylation of chitin. Three different chitosan extracts, coded as Chito A (3.33 % w/w), Chito B (4.01 % w/w) and Chito C (3.45 % w/w) were extracted using 3 %, 4 % and 5% w/v concentrations of HCl as decalcifiers respectively. Physicochemicaldoi:10.3329/sjps.v2i2.5821 fatcat:ihaplovgn5d7jmhcfnergsguee