Content of cadmium and arsenic in the veined rapa whelk viscera and estimation of the prospects for their processing

This work presents the data on the content of cadmium and arsenic in the viscera (visceral mass) of the veined rapa whelk Rapana venosa caught in the Azov Sea (Kerch Strait) and the Black Sea (Feodosia Gulf). In the viscera of the individuals from the Azov Sea, cadmium content was 8.6 mg/kg, and for the individuals from the Black Sea, this value was 3.5, with the allowable level 2.0 mg/kg as stipulated by TR CU 021/2011. Cadmium content in various internal organs of the investigated veined rapa whelk individuals varied. The highest content of cadmium (48 mg/kg) was recorded in the kidney of the individuals caught in the Azov Sea; cadmium content in the digestive gland also exceeded the allowable level. Arsenic content in the viscera of the individuals from the Azov Sea exceeded the allowable level by 7.8 %; this value was significantly lower for the Black Sea (0.1 mg/kg, while the established norm is 5.0 mg/kg). In several organs of the individuals from the Azov Sea (namely, the kidney, ovaries/testes, and digestive gland), arsenic content was within the normal values established by the regulations. The product derived from veined rapa whelk through enzymolysis and subsequent concentration by evaporation, was characterized by increased content of cadmium and arsenic. In terms of cadmium and arsenic content, ovaries and testes of the investigated individuals proved to be safe for consumption; their yield amounts to 10.9 % out of the entire visceral mass, and it is possible to use them as a source of valuable nutrients.

Bibliographic Details

Main Authors:	Esina, L.M., Chernyavskaya, S.L., Belyakova, I.A., Korablina, I.V.
Format:	Journal Contribution biblioteca
Language:	Russian
Published:	2021
Subjects:	Rapana venosa, Food safety, Lipids, Visceral mass, Enzymolysis, Kidneys, Ovaries, Cadmium, Безопасность питания, Жиры, Почки, Кадмий, Ферментолиз, Висцеральная масса, ASFA_2015::P::Processing fishery products, ASFA_2015::M::Marine molluscs, ASFA_2015::A::Arsenic,
Online Access:	http://hdl.handle.net/1834/41870
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