The produced chitosan ( Chitosan-CGNA ) was characterised in terms of the protein contentedness , solubility , degree of deacetylation , viscosity , molecular weight , FTIR , SEM , XRD , antimicrobic , and antioxidant activity . The solvents pointed that the obtained chitosan had a high degree of deacetylation ( 91 % ) and a spiritualist molecular weighting ( 589 kDa ) . The antibacterial action