Open AccessEffect of a chitosan-alginate bilayer coating incorporated with lysozyme on quality of refrigerated turbot fillets
Author(s) -
Qiuying Li,
Jingyang Zhang,
Dongdong Zhang,
Tong Sun
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/792/1/012016
Subject(s) - lysozyme , turbot , chitosan , coating , bilayer , food science , chemistry , chemical engineering , quality (philosophy) , materials science , composite material , fish <actinopterygii> , membrane , fishery , biology , biochemistry , engineering , philosophy , epistemology
Preservation properties of chitosan (CS) and sodium alginate (ALG) coatings are widely investigated, but their bilayer composite coating application to fish preservation is limited. The aim of present study was to evaluate the quality changes in 4°C turbot fillets treated with a bilayer coating based on lysozyme-CS (LZ-CS) coating layer and ALG coating layer. Changes in total viable counts (TVC), texture profiles, and physiochemical indexes including pH, total volatile basic nitrogen (TVB-N), and K value were examined. The results indicated that bilayer coating was more effective than LZ-CS and ALG monolayer coatings in preservation of turbot fillets. The bilayer coating significant inhibited the increase of TVC, pH, TVB-N, and K value, and maintained better texture characteristics of turbot fillets during storage. Therefore, the bilayer coating on the turbot is more superior to monolayer coatings, which would have potential applications on fish preservation.