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Macro- and trace elements in Chinese mitten crabs (Eriocheir sinensis) from Szczecin Lagoon, Poland – Implications for human health

Nędzarek, Arkadiusz, Czerniejewski, Przemysław, Tórz, Agnieszka
Aquaculture 2019 v.506 pp. 229-237
Dietary Reference Intakes, Eriocheir sinensis, European Union, aluminum, arsenic, autumn, cadmium, calcium, copper, crabs, elemental composition, exoskeleton, fisheries, food safety, foods, gills, gonads, hepatopancreas, human health, invasive species, iron, lead, magnesium, muscles, nickel, potassium, sodium, spring, zinc, China, Poland
Chinese mitten crab (Eriocheir sinensis) is a valued foodstuff in China. However, their elemental composition is still poorly understood. Therefore, the aim of this study was to quantify the concentrations of Al, As, Ca, Cd, Cu, Fe, K, Mg, Na, Ni, Pb, Se, and Zn in muscle, hepatopancreas, gonads, gills, and exoskeletons of E. sinensis caught in spring and autumn in the Szczecin Lagoon, and to compare these levels to Dietary Reference Intake. High levels of Ca (>20, 000 μg g−1) in the exoskeleton, K (5,980 μg g−1) and Zn (80.8 μg g−1) in muscle, Ni (0.678 μg g−1) and Cd (0.3278 μg g−1) in the hepatopancreas, As (0.0411 μg g−1) and Se (0.3208 μg g−1) in the gonads, Fe (204 μg g−1), Cu (59.0 mg g−1), and Pb (0.0742 mg g−1) in the gills were measured. The edible parts of E. sinensis caught in Poland can be a valuable source of macro- and microelements important in human diet. Levels of Pb and Cd did not exceed the established food safety level of 0.50 μg g−1. The results showed that introduction of commercial fishing of this species may be profitable and would also comply with the European Union's legal regulations concerning the reduction of invasive animal populations in Europe.