Nutritional attributes in the fillet of skipjack tuna (Katsuwonus pelamis) from the Arabian Sea near the south-west coast of India

Chakraborty, Kajal and Raola, Vamshi Krishna and Joy, Minju and Makkar, Fasina (2016) Nutritional attributes in the fillet of skipjack tuna (Katsuwonus pelamis) from the Arabian Sea near the south-west coast of India. Journal of the Marine Biological Association of the United Kingdom, (2016). pp. 1-14.

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    Inter-annual and seasonal variability in the nutritional parameters of the edible portion of skipjack tuna (Katsuwonus pelamis) collected from the Arabian Sea were determined for a period of 4 years. Greater levels of long chain n-3 fatty acids (35% during pre-monsoon), critical in the human diet for their anti-inflammatory properties with greater n-3:n-6 fatty acid ratio (8:12) demonstrated that this species may serve as an alternative to balance the greater amount of n-6 fatty acids. The present study demonstrated skipjack tuna as a significant source of protein, amino acids, minerals and vitamins. A balanced essential to non-essential amino acid ratio (1.2:1.4) in the fillets indicated that this species could provide well-balanced protein depositions. Vitamins A and K1 demonstrated post-monsoon maxima, whilst vitamins D3 and E showed pre-monsoon maxima. Greater calcium (172 mg 100 g21 ) and phosphorus contents (923 mg 100 g21 ) were recorded in the fillets of skipjack tuna during the pre-monsoon season. The chlorophyll-a concentration and sea surface temperature of its habitat were considered to understand their effect on the nutritional composition of skipjack tuna all through the study period. Significant correlation between long chain n-3 polyunsaturated fatty acids such as eicosapentaenoic acid and docosahexaenoic acid (r 2 0.99) of skipjack tuna alongside chlorophyll-a concentration was observed, particularly during the monsoon. The lesser atherogenic/thrombogenicity indices (,1), greater hypocholesterolaemic/hypercholesterolaemic ratio (.1.0), and lesser cholesterol contents (,50 mg 100 g21 ) of the fillets in skipjack tuna contributed towards its parameters to be qualified as a high value, balanced nutritional source.

    Item Type: Article
    Uncontrolled Keywords: Atherogenicity index; Docosahexaenoic acid; Eicosapentaenoic acid; Fatty acid methyl esters; Hypocholesterolaemic:hypercholesterolaemic ratio; High performance liquid chromatography; Polyunstaturated fatty acid; Saturated fatty acid; Total amino acids; Total aromatic amino acid; Total essential amino acid; Total fatty acids; Thrombogenicity index; Total non-essential amino acid; Total sulphur containing amino acid
    Subjects: Fish Biotechnology
    Divisions: CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology
    CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI-Kochi > Marine Biotechnology
    Depositing User: Arun Surendran
    Date Deposited: 14 Dec 2016 06:03
    Last Modified: 16 Dec 2016 06:30

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