Meltem SEREDAROĞLU, Çilem PURMA

Su ürünlerinde kalitenin saptanmasında kullanılan hızlı teknikleri

Balık kalitesi, mikrobiyolojik kalite, duyusal kalite, besleyici özellikler, ürüne özgü özellikler, tazelik, türlere özgü fiziksel özellikler ve teknolojik kalite gibi çeşitli bileşenlerden oluşan karmaşık bir kavramdır. Balık tazeliği, balık kalitesinin en temel bileşenidir ve çeşitli indikatörlerle tanımlanabilir. Bu özellikler ve son ürünün tazeliği ve nitelikleri balıklarda ölüm sonrasında gerçekleşen fiziksel, kimyasal, biyokimyasal ve mikrobiyolojik değişikliklerden etkilenmektedir. Su ürünleri sektöründe son yıllarda kullanılmaya başlanan yeni fiziksel yöntemlerle işleme hattında balık kalitesinin hızlı olarak ölçülmesi mümkün olmaktadır. Bu derlemede balık kalitesinin belirlenmesinde hızlı ve diğer yöntemlerle korelasyon gösteren sonuçlara ulaşılmayı sağlayan görüntü analizi, elektronik burun, elektriksel ölçümler, spektrometrik ve reolojik yöntemler gibi fiziksel ve mekaniksel yöntemlerin kullanılması incelenmiştir.

Anahtar Kelimeler:

deniz ürünleri, kimyasal analizler, hızlı metodlar, gıda kalitesi, tekstür, uçucu bileşikler, balık (gıda), görüntü analizleri

Rapid techniques used to determine the quality of seafood

Quality of fish is a complex concept that is consisted of components like microbiolagical quality, technological quality, sensorial quality, nutritional properties, properties essential to the product, physical properties essential to type and freshness, Freshness of fish is the main component of quality and can be characterized with various indicators. These properties and freshness and characteristics of end product can be influenced by physical, chemical, biochemical and microbiological changes that appear after death. In recent years, for on-line processing, novel and rapid physical methods started to be used to determine the quality of fish. For this purpose physical, mechanical, rheological methods like electrical measurements, optical measurements, texture and image analysis and measurements of volatile compounds are examined.

Keywords:

seafoods, chemical analysis, rapid methods, food quality, texture, volatile compounds, fish, image analysis,

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Anonymous, 2000. Flair Flow Europe Technical Manual. F-FE 380 A100

Heia.K., Esaiassen.M., Nilsen.H, Sigemes.F., Oehlenschlager.J., Schubring.R., Borderias,J., Nilsson.K., Jorgensen.B.M., Nesvadba,P., 1998. Evaluation of fish freshness by physical measurement techniques. In G. Olafsdottir, J. B. Luten, P. Dalgaard, M. Caracher.V. Verrez-Bagnis, E. Martindotrjr, K.Heia (Eds.), In Methods to Evaluate Fish Freshness in Research And Industry, Proceedings of the final meeting of the concerted action "Evaluation of Fish Freshness" AIR CT94 2283. Paris: Institut International Froid.

Heia.K., Esaiassen,M., Nilsen.H., 2003. Measurement of quality of fish using visible light. In J. B. Luten, J. Oehlenschlager, G. Olafsdottir (Eds.), Quality of Fish from Catch to Consumer: Labelling, Monitoring and Traceability, 201-209. The Netherlands: Wageningen Academic Publishers.

Jason, A.C.,Richards, J.C.S., 1975. The development of an electronic fish freshnessmeter, J. Physics E: Scientific Instruments, 8:826-830.

Kroger.M., 2003. Image analysis for monitoring the quality of fish, In J.B. Luten, J.Oehlenschlager, G. Olafsdottir (Eds.), Quality of Fish from Catch to Consumer: Labelling, Monitoring And Traceability, 211-224. The Netherlands: Wageningen Academic Publishers.

Nesvadba,P.,2003. Introduction and outcomes of the project " Multisensor techniques for monitoring the quality of fish". In J. B. Luten, J. Oehlenschlager, G. Olafsdottir (Eds.), Quality of Fish from Catch to Consumer: Labelling, Monitoring And Traceability, 175-187. The Netherlands: Wageningen Academic Publishers.

Nilsen.H., Esaiassen.M., Heia,K., Sigemes,F., 2002. Visible/Near infrared spectroscopy: A new tool for the evaluation offish freshness. Journal of Food Science, 67:1821-1826.

Oehlenschlager, J., 2003. Measurement of freshness of fish based on electrical properties. In J. B. Luten, J. Oehlenschlager, G. Olafsdottir (Eds.), Quality of Fish from Catch to Consumer: Labelling, Monitoring And Traceability, 237-249. The Netherlands: Wageningen Academic Publishers.

Olafsdottir.G., Martinsdottir.E., Oehlenschlager,J., Dalgaard,P., Jensen, B., Undeland, I., Mackie, I.M., Henehan.G., Nielsen,J., Nilsen.H., 1997. Methods to evaluate fish freshness in research and industry, Trends in Food Science and Technology, 8:258-265.

Olafsdottir.G., Nesvadba,P, Di Natale.C, Carache.M, . Oehlenschlager.J., Tryggvadottir,S.V., Schubring.R., Kroeger.M., Heia,K, Esaiassen.M., MacagnanoA, Jorgensen.B.M., 2004. Multisensor for fish quality determination, Trends in Food Science and Technology, 15:86-93.

Sigemes,F., Heia,K.,Wold,J.P.G.,Eilertsen,G., Sorensen.N.K., Esaiassen.M., 1998. Assement of fish (Cod) freshness by VIS/NIR spectroscopy. In Methods to Evaluate Fish Freshness in Research and Industry, Proceedings of the final meeting of the concerted action AIR CT94-2283, Nantes 369-375. Paris: Institut International Froid.