Effect of modified atmosphere packaging on the shelf life of chilled Ccommon carp (Cyprinus carpio) steaks: chemical and sensory attributes

Abstract

The effect of modified atmosphere packaging (MAP 1  – 80% O₂ + 20% CO₂ and MAP 2 – 90% CO₂ + 10% N₂) on selected chemical and sensory parameters of common carp steaks stored at 3 ± 0.5°C, and determination of the shelf life of the products was studied in this research. Samples were analysed on day 1, 3, 5, 7, 9, 11, 13, 15, and 17. An increase in TVB-N values in carp steaks followed the order: MAP 2 < control < MAP 1. From day 9 of storage FFA concentrations were higher (P < 0.01) in MAP 2 samples compared to control and MAP 1 samples. The presence of oxygen (MAP 1 and control) resulted in an increase in TBA values in comparison with samples packaged in the absence of oxygen. According to sensory evaluation, it was concluded that carp steaks packaged in modified atmosphere with 80% O₂ + 20% CO₂ remained acceptable up to 15 days of storage, whereas samples packaged under 90% CO₂ + 10% N₂ as well as samples kept on flaked ice remained unchanged until the end of the experiment.