Fatty acids and contaminants in edible marine gastropods from Patagonia

CUMPLIDO, M.; SASTRE, V.; DIAZ DE VIVAR, M.E.; AVARO, M.; BIGATTI, G.; NIETO VILELA, R.A.; GIL, M.; DIAZ DE VIVAR, M.E.; CUMPLIDO, M.; AVARO, M.; SASTRE, V.; BIGATTI, G.; NIETO VILELA, R.A.; GIL, M.

JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM

CAMBRIDGE UNIV PRESS

Año: 2017 p. 1 - 9

0025-3154

Edible marine gastropods are consumed in northern Patagonia without regulations or knowledge of nutritional composition and food quality. We determined total lipids (TL), fatty acid (FA), paralytic shellfish poison (PSP) and metal contamination in six edible marine gastropods: Buccinanops globulosus, B. cochlidium, Trophon geversianus, Odontocymbiola magellanica, Tegula patagonica and Nacella magellanica. TL was lowest in the foot (0.29?0.56%) and maximum in organs (1.43?3.2%), presenting less TL than other edible species around the world. Saturated FA were similar to other consumed marine gastropods worldwide and dominant in all species studied (33.26?48.19%), while monounsaturated FA reached about 30% only in 2 species, but did not exceed 18% in the other species. Polyunsaturated FA reached up to 23.77%, but generally did not exceed 14%. Highly unsaturated FA (AA, EPA and DHA), reached about 27%. The dominant FA was palmitic acid (0.217 to 2.43 µg mg−1).Differences in FA could be related to the different alimentation of the species. Limit of PSP consumption was exceeded in a few months only for two species. Lead was not detectable (