Morphological, nutritional and safety traits of bluefin tuna (<i>Thunnus thynnus</i>) reared in floating cages

Parisi, Giuliana; Mecatti, Massimo; Lupi, Paola; Giorgi, Gianluca; Michelotti, D.; Galigani, Ilaria; Poli, Bianca Maria

doi:10.4081/ijas.2007.1s.811

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…It was demonstrated (Parisi, Mecatti, Lupi, Giorgi, Michelotti, Galigani & Poli 2007) that fattening of bluefin did not influence flesh colour or total lipid content, producing small differences in its chemical composition: higher C18:0, C18:1n9 and PUFA contents. Such a comparison between wild and fattened bluefin in our study could not be generalized, as half of the measured PUFA appeared to be higher in wild fish (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Fatty acid and proximate composition of bluefin tuna (Thunnus thynnus) muscle with regard to plasma lipids

Popović

Kozačinski

Strunjak‐Perović

et al. 2011

Aquaculture Research

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The composition of tail muscle fatty acids from wild and cultured bluefin tuna reared on a diet based on herring and sardine, along with the plasma lipid profile of the farmed individuals, was determined. The total lipid content of farmed bluefin in this study was 0.922 g/100 g or 3.49 g of saturated fatty acids (SAFA), 4.48 g of monounsaturated fatty acids (MUFA), 2.58 g polyunsaturated fatty acids (PUFA) n‐3 and 0.37 g of PUFA n‐6 fatty acids; for wild specimens, it was 0.920 g/100 g, or 2.85 g of SAFA, 4.82 g of MUFA, 2.78 g PUFA n‐3 and 0.27 g of PUFA n‐6 fatty acids. The major fatty acids in this study were 16:0; 16:1, n‐7; 18:1, n‐9 and DHA 22:6, n‐3 acids. The sum of these major components accounted for more than 57% and 80% of the total fatty acids in all the samples of farmed and wild tuna respectively. No significant differences in the proximate composition were demonstrated between farmed and wild samples, except for the energy value, in favour of the farmed tuna. Statistically, glucose tends to increase together with cholesterol (CHOL) and plasma triglyceride, as for these pairs, it showed positive correlation coefficients and P>0.05. Some measured tuna metabolites demonstrated strong mutual correlations, especially GLU, CHOL and TRIG, which are crucial factors in the lipid profile of animals.

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Section: Discussionmentioning

confidence: 99%

Fatty acid and proximate composition of bluefin tuna (Thunnus thynnus) muscle with regard to plasma lipids

Popović

Kozačinski

Strunjak‐Perović

et al. 2011

Aquaculture Research

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Mercury and Cadmium Concentrations in Farmed Bluefin Tuna (Thunnus orientalis) and the Suitability of Using the Caudal Peduncle Muscle Tissue as a Monitoring Tool

Lares¹,

Huerta-Díaz

Marinone³

et al. 2012

Journal of Food Protection

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Three regions (cephalic, central, and caudal) of the dorsal and ventral muscle tissue (R1 through R6) and the caudal peduncle muscle tissue (CPMT) of 20 farmed bluefin tuna (Thunnus orientalis) were analyzed for mercury (Hg) and cadmium (Cd) concentrations. Region 1 (cephalic-ventral) had significantly lower concentrations of Hg but significantly higher concentrations of Cd than did the other regions. However, average metal concentrations of all regions (R1 through R6) were only 6% lower for Hg and were not significantly different for Cd from those in the CPMT. Therefore, the CPMT was used to monitor the concentrations of these two metals in more than 100 farmed tuna collected from July 2004 to January 2009 under the assumption that the Cd concentrations in the CPMT would be representative of the Cd concentration in the whole body and that the Hg concentrations would be, in the worst case, overestimated by approximately 6%. The Hg and Cd concentrations in these tuna were inversely related to the condition index, i.e., the tuna in better condition had the lowest concentrations of these metals. The mean concentrations in the CPMT of all fish analyzed were 0.31 ± 0.17 μg/g wet weight for Hg and 0.007 ± 0.006 μg/g wet weight for Cd. These concentrations were below the limits established by Mexican regulations for seafood (1.0 and 0.5 μg/g for Hg and Cd, respectively) and Japan (0.4 μg/g for Hg).

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Morphological, nutritional and safety traits of bluefin tuna (Thunnus thynnus) reared in floating cages

Cited by 2 publications

References 2 publications

Fatty acid and proximate composition of bluefin tuna (Thunnus thynnus) muscle with regard to plasma lipids

Fatty acid and proximate composition of bluefin tuna (Thunnus thynnus) muscle with regard to plasma lipids

Mercury and Cadmium Concentrations in Farmed Bluefin Tuna (Thunnus orientalis) and the Suitability of Using the Caudal Peduncle Muscle Tissue as a Monitoring Tool

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