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Correlation Between Texture Profile Analysis and Colour Characteristics of Fish: Case study: Black Sea Large Rainbow Trout and Norwegian Salmon
(Univ Agricultural Sciences & Veterinary Medicine Cluj-Napoca, 2024) Kocatepe, Demet; Altan, Can O.; Corapci, Bengunur; Keskin, Irfan; Kostekli, Bayram; Turan, Hulya
In this study the colour and texture characteristics of imported Norwegian salmon (NS) and large rainbow trout of different origins (TF: rainbow trout of French origin; TT: rainbow trout of Turkish origin) were investigated. Two sections were then taken from the dorsal and tail zone of the fish and L*, a*, b*, hue, chroma, lightness index, yellowness index and texture profile analysis (TPA) were determined. The L*, a* and b* values measured in the dorsal zone were higher than those measured in the tail zone in all groups. The hue value of dorsal and tail zones of the Norwegian salmon was lower than that of the large rainbow trout, suggesting that the colour of the fish is redder. The tail zones of the fish were harder than the dorsal zones. The significant correlations between the a* and b* values of the dorsal zone of the TF group (r=0.94, p +/- 0.05) and the NX group (r=0.96, p +/- 0.05). The cohesiveness value of the tail zone of the TT group had a positive strong correlation with gumminess (r=0.99, p +/- 0.05). The correlations found in this study will help the aquaculture industry correlate the colour and texture parameters of salmon and large rainbow trout.