Active edible coating effectiveness in shelf-life enhancement of trout (Oncorhynchusmykiss) fillets.

Carrageenan-based biocomposites have significant potential to develop packaging films and coatings for shelf-life extension of food products. In this study trout fresh fillets were separated into three groups: uncoated trout fillet (UTF), coated with carrageenan-based materials (coated trout fillet, CTF), and coated with carrageenan-based materials containing 1 g/100 mL essential lemon oil (active coated trout fillet, ACTF). The effect of carrageenan coating enriched with essential lemon oil on the quality of rainbow trout ( Oncorhynchusmykiss ) fillets during refrigerated storage (4 ± 1 °C) over a period of 15 days was evaluated. Trout fillets were analyzed for microbiological (total viable count, Enterobacteriacea counts, lactic acid bacteria, H 2 S-producing bacteria), chemical (TVB-N, moisture, pH), and biochemical (fatty acids content) characteristics. This study demonstrates the effectiveness of an edible active carrageenan coating in preserving fresh trout fillets from lipid oxidation and microbial growth. [ABSTRACT FROM AUTHOR]