Optimization of cold plasma combined treatment process and its effect on the quality of Asian sea bass (Lates calcarifer) during refrigerated storage

Abstract

BACKGROUNDCold plasma exhibits broad applicability in the realm of fish sterilization and preservation. The combination process of plasma‐activated water and dielectric barrier discharge (PAW‐DBD) was optimized, and its disinfection effects on bass fillets were studied.RESULTSThe best conditions for disinfection of PAW‐DBD were as follows. Bass fillets were soaked in PAW for 150 s, and then treated by DBD system at 160 kV for 180 s. The total viable count (TVC) reduced by 1.68 log CFU g−1. On the 15th day of refrigerated storage, TVC of PAW‐DBD group was 7.01 log CFU g−1, while the PAW and DBD group exhibited a TVC of 7.02 and 7.01 log CFU g−1 on day 12; the TVC of the control group was 7.13 log CFU g−1 on day 6. The sensory score, water‐holding capacity, and 2‐thiobarbituric acid reactive substance values of the PAW‐DBD group were significantly higher than those of PAW and DBD group (P < 0.05), whereas the TVC, Pseudomonas spp. count, and pH of the group were significantly lower (P < 0.05) during refrigerated storage.CONCLUSIONPAW‐DBD treatment can enhance the disinfection effect, maintain good quality, and extend the storage period of bass fillets. © 2023 Society of Chemical Industry.

Effects of Gas Composition on the Lipid Oxidation and Fatty Acid Concentration of Tilapia Fillets Treated with In-Package Atmospheric Cold Plasma

“…On each sampling day, each group of 3 fish fillets was packed in a box marked with a 3-digit code and presented to each group member blindly in random order. By using a 5-point (5 to 1) descriptive scale ( Table S1 ), the team members rated the brightness, color, texture, muscle elasticity, and odor of the samples (less than 3 is considered unacceptable) [ 16 ], and the results were expressed as the mean score for each attribute. The radar maps were drawn to display the sensory evaluation results.…”