Effect of Different Thawing Techniques on Color of Black Sea Trout (Salmo labrax Pallas, 1814) Fillets
Abstract
In this research, effect of different thawing techniques on the meat color of Black Sea trout (Salmo labrax) was evaluated. The commonly using fish thawing methods by the consumers were applied to frozen fish fillets and the color losses were determined. For this purpose, 70 individuals of Black Sea trout were used. First of all, trouts were washed, cleaned and filleted before the freezing stage. In the latter, fillets were kept at -20 ºC for 7 days in deep-freezer and frozen fillets were thawed with 4 different thawing techniques such as thawing in room temperature (+25ºC), immersion in water (+15 ºC), in refrigerator (+4 ºC) and in microwave (defrost option). Finally, color characteristics of thawed fillets were determined. According to the results, while the most similar color profile to fresh Black Sea trout meat was detected on thawed in refrigerator at +4ºC, most color loss was observed in microwaved ones. In view of the results and considering food safety, thawing of frozen fish fillets in refrigerator (+4ºC) is more convenient.
Keywords
Thawing,Salmo trutta labrax,Color,Quality Loss,Fish Fillet,Freezing
References
- Elliot, J.M. (1994) Quantitative ecology and the brown trout, Oxford Univ. Press, Oxford, UK.
- Sahlmann, C., Gu, J., Kortner, T.M., Lein, L., Krogdahl, A., and Bakke, A.M. (2015) Ontogeny of the digestive system of atlantic salmon (Salmo salar L.) and effects of soybean meal from start-feeding, J. Plosone. 10, 1–23.
- Froese, R., and Pauly, D. (2017) FishBase. Retrieved from www.fishbase.org.
- Aydın, H., and Yandı, I. (2002) The general status of spawning areas of blacksea trout in the east Blacksea regions (Salmo trutta labrax Pallas, 1811), E.U. J. Fish. Aquat. Sci. 19, 501–506.
- Çankırılıgil, E.C., Çakmak, E., Özel, O.T., and Kasapoglu, N. (2017) Black Sea trout (Salmo trutta labrax PALLAS, 1811) culture in Turkey and morphometric characteristics of fifth culture generation, in: Abstr. B. SEAB 2017, Int. Symp. EuroAsian Biodivers., Minsk, Belarus, p. 87.
- Azam, K., and Mackie, I.M. (1989) The effect of slaughter method on the quality of rainbow trout (Salmo gairdneri) during storage on ice, Int. J. Food Sci. Technol., 24, 69–79.
- Magnusson, O.M., and Johansen, S. (1990) Influence of handling and slaughtering on quality of farmed fish, in: Chill. Freez. New Fish Prod., pp. 317–222.
- Nilsson, K., and Ekstrand, B.O. (1995) Sensory and chemically measured effects of different freeze treatments on the quality of farmed rainbow trout, J. Food Qual., 18, 177–191.
- Sigurgisladottir, S., Ingvarsdottir, H., Torrissen, O.J., Cardinal, M., and Hafsteinsson, H. (2000) Effects of freezing/thawing on the microstructure and the texture of smoked atlantic salmon (Salmo salar), Food Res. Int., 33, 857–865. doi:10.1016/S0963-9969(00)00105-8.
- García-Arias, M.T., Alvarez-Pontes, E., García-Fernández, M.C., and Sánchez-Muniz, F.J. (2003) Freezing/defrosting/frying of sardine fillets. Influence of slow and quick defrosting on protein quality, J. Sci. Food Agric., 83, 602–608. doi:10.1002/jsfa.1366.
