Biogenic Amine Content and Shelf-Life of Salmon Fillets Packaged in Modified Atmospheres of Low-Level Carbon Monoxide and Different Carbon Dioxide Concentrations

OpenAlex English

The objective of this study was to determine the biogenic amine levels and quality parameters of Atlantic salmon fillets packaged with a low level of carbon monoxide and varied concentrations of carbon dioxide and stored at 1°C.For this purpose, ambient air packaging and modified atmosphere packaging (MAP) with gas mixtures of CO, CO 2 and N 2 (in a ratio of 0.4/30/69.6);CO 2 , N 2 and O 2 (in the ratios of 40/30/30, 50/30/20, and 60/30/10); and CO 2 and N 2 (in a ratio of 40/60) were applied.Salmon fillets were analyzed for biogenic amine contents and chemical, microbiological and sensorial properties during 27-day cold storage.The study results indicate that salmon fillets stored in cold storage undergo a deterioration process depending on storage time and packaging conditions.The thiobarbituric acid reactive substances, total volatile basic nitrogen and trimethylamine nitrogen values, and biogenic amine levels were lower in CO-MAP and 60% CO 2 -MAP compared to the air-packaged samples in extended storage period.Furthermore, 1.5-2 log bacterial inhibition was recorded in CO-MAP and 60% CO 2 -MAP, which allowed the products to be consumed up to day 21.However, the shelf-life of air-packaged salmon was limited to one week due to the signs of deterioration.In conclusion, modified atmosphere packaging with 0.4% CO and 60% CO 2 significantly extended the shelf-life of cold-stored salmon fillets by maintaining quality characteristics of the products.These alternative gas concentrations can also be effective in the preservation of other fatty fish species under cold storage.