The coating effects of chitosan and chitosan nanoparticles on the quality of silver carp (Hypophthalmicthys
molitrix) fillets during refrigerated storage at 4 C were compared. Solutions of Chitosan
(2%, w/v) and nanochitosan (2%, w/v) were used for the coating. The control and the coated fish samples
were analyzed periodically for microbiological (total mesophilic and psychrotrophic count), physicochemical
(pH, TVB-N, TBARS), and sensory attributes. The results indicated that both chitosan and
nanochitosan coating were effective for the preservation of silver carp fillets during refrigerated storage.
However, nanochitosan exhibited higher antimicrobial activity than chitosan during the storage period.
Furthermore, nanochitosan showed a stronger ability to inhibit the TVB-N content than chitosan.
Therefore, to extend the shelf life and delay the deterioration of fresh silver carp fillets during refrigerated
storage, nanochitosan coating is more effective.