The effect of modified atmosphere packaging on the fillet quality of rainbow trout (Oncorhynchus mykiss) during refrigerated storage

Due to the potentiality and rapid spoilage of edible aquatic, many technologies have been developed to increase their shelflife. In this research, the effect of modified atmosphere (40% carbon dioxide and 60% nitrogen), vacuum and air atmosphere packaging on the physical, chemical and microbiological changes of Oncorhynchus mykiss fillet during refrigerated storage (4°C) were studied. Chemical (total volatile base nitrogen (TVB-N) and thiobarbituric acid (TBA)), physical (pH, drip loss and colorimetry) and microbial parameters (total bacterial count (TVC) and psychrotrophic count (PTC)) were measured at 0, 3, 6, 9, 12, 15 and 18 days. The results showed that the fillets packed with modified atmosphere maintained the quality and pysical properties of fillets for 15 days. While the quality and pysical properties of control samples strongly decreased (P