Scientific journal

59 2020

Journal of Food and Nutrition Research
Summary No. 2 / 2020

Krešić, G. – Pleadin, J. – Kvrgić, K. – Lešić, T. – Džafić, N. – Zrnčić, S. – Vulić, A. – Bogdanović, T. – Oraić, D. – Vahčić, N.
Seasonal and geographical variations in chemical composition and fatty acid profile of Mediterranean mussels
Journal of Food and Nutrition Research, 59, 2020, No. 2, s. 163-173

Greta Krešić, Department of Food and Nutrition, Faculty of Tourism and Hospitality Management, University of Rijeka, Primorska 42, 51410 Opatija, Croatia. E-mail: gretak@fthm.hr

Received 29 January 2020; 1st revised 15 April 2020; 2nd revised 28 May 2020; accepted 30 May 2020; published online 15 June 2020.

Summary: This study investigates basic chemical composition and fatty acid profile of Mediterranean mussels (Mytillus galloprovincialis) cultivated in aquaculture facilities in six locations on the North Adriatic Istrian peninsula over an annual farming cycle. Mussels were sampled on a monthly basis. Mussels sampled during summer had a lower water content (p = 0.022), higher protein content (p = 0.006) and higher lipid content (p < 0.001), with the highest nutritional quality seen in samples from Limski Bay. Additionally, geographical location significantly influenced the fatty acid profile, in which dominated saturated fatty acids (SFA) followed by monounsaturated (MUFA) and polyunsaturated fatty acids (PUFA). The shares of SFA, MUFA and PUFA were highest in Savudrija Bay, Budava and Limski Bay, respectively. As compared to SFA and MUFA, the amount of PUFA varied in an opposite fashion, being higher during warmer months (p < 0.001). The major PUFA was eicosapentaenoic acid, whose share was significantly higher as compared to docosahexaenoic acid during the entire annual farming cycle at all sampling locations (p < 0.001). Based on the basic chemical composition and fatty acid profile, an optimal location and timing for harvesting Mediterranean mussels is Limski Bay during summer.

Keywords: chemical composition, fatty acid profile, Mediterranean mussel, Mytilus galloprovincialis, geographical variation, seasonal variation

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