Mercury, Fatty Acids Content and Lipid Quality Indexes in Muscles of Freshwater and Marine Fish on the Polish Market. Risk Assessment of Fish Consumption

• Published in: International journal of environmental research and public health Vol. 14; no. 10; p. 1120
• Main Authors: Łuczyńska, Joanna, Paszczyk, Beata, Nowosad, Joanna, Łuczyński, Marek Jan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 25.09.2017; MDPI
• Subjects: Animals; Bioaccumulation; Blood-brain barrier; Body size; Body weight; Brain research; Carcinogens; Carp; Catfish; Cholesterol; Clupea harengus; Cyprinus carpio; Fatty acids; Fatty Acids - analysis; Fish; Fisheries; Fishes - metabolism; Food contamination & poisoning; Food Contamination - analysis; Fresh Water; Freshwater fish; Fruits; Gas chromatography; Health risk assessment; Health risks; Heavy metals; Humans; Leuciscus idus; Lipids; Lipids - analysis; Marine fish; Markets; Mercury; Mercury - analysis; Metals; Muscles; Muscles - chemistry; Nervous system; Oncorhynchus mykiss; Perca fluviatilis; Platichthys flesus; Poland; Risk Assessment; Salmon; Seawater; Trout; Vegetables; Water Pollutants, Chemical - analysis; Water pollution effects; Water quality; fatty acids; EWI; mercury; fish; THQ; quality index; human health
• ISSN: 1660-4601; 1661-7827; 1660-4601
• DOI: 10.3390/ijerph14101120

Mercury content and fatty acids in muscles of L. (European perch), L. (ide), L. (European or common carp), Walb. (rainbow trout), L. (European flounder). and L. (bream) from the Polish market were investigated. The total mercury was processed with AAS. The fatty acids were analyzed by gas chromatography. The concentration of mercury in muscles varied from 0.006 to 0.138 mg/kg and decreased as follows: perch ≈ ide > flounder > herring ≈ bream ≈ rainbow trout > carp ( ≤ 0.05). There were only significant positive correlations between body weight and mercury content in muscle tissue of carp (r = 0.878), flounder (r = 0.925) and herring (r = 0.982) ( ≤ 0.05). The atherogenic index (AI), thrombogenicity index (TI) and flesh-lipid quality index (FLQ) were calculated as follows 0.33-0.70 (IA), 0.16-0.31 (IT) and 13.01-33.22 (FLQ). Hypocholesterolemic (OFA) and hypercholesterolemic fatty acids (DFA) in muscles of fish ranged from 18.26 to 23.01 and from 73.91 to 78.46, respectively. In most cases, there were not significant correlations between size (body weight and total length) and fatty acids in the muscles of the examined fish ( > 0.05). The Target Hazard Quotient (THQ) values were below 1, which shows that there is no non-carcinogenic health risk to the consumer by consuming the examined fish.