4. Conclusion
Results of the present study showed 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.
This could be due to the nanoparticle's larger surface area and higher affinity with bacteria cells.
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 appropriate.