Metals in tissues of seabass and seabream reared in sites with oxic and anoxic substrata and risk assessment for consumers. (1st March 2016)

• Record Type: Journal Article
• Authors: Kalantzi, I.; Pergantis, S.A.; Black, K.D.; Shimmield, T.M.; Papageorgiou, N.; Tsapakis, M.; Karakassis, I.
• Is Part Of: Food chemistry. Volume 194(2016)
• Page Start: 659
• Page End: 670
• Publication Date: 2016-03-01
• Subjects: Trace elements -- Metals -- Farmed marine fish -- Bioaccumulation -- Sediment geochemistry -- Human risk assessment; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2015.08.072
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Levels of farmed fish tissues metals were studied in 4 Mediterranean fish farms. Seabream tissues accumulate less metals with higher levels than seabass tissues. In some tissues, fish accumulate less metals in anoxic sites than in oxic ones. Farmed fish muscle accumulates less metals than other tissues. Farmed fish muscle is safe for consumption according to human risk assessment. Abstract: Twenty-eight metals and elements were measured in the muscle, liver, gills, bone and intestine of farmed seabass and gilthead seabream from four Mediterranean fish farms. The influence of fish species and the effect of environmental conditions on the metal accumulation in fish tissues was investigated. Most concentrations were lower in muscle and higher in liver and bone than in other body tissues. Seabass accumulates more elements in its tissues than seabream. Fish reared in coarse, oxic sites accumulate more elements with higher concentrations in muscle, bone and intestine and with lower concentrations in liver and gills than fish reared in silty, anoxic sites. This may be attributed to feed type and sediment properties. According to the metal pollution index, hazard quotient, selenium health benefit values, carcinogenic risk of arsenic, maximum safe consumption and the permitted limits, the consumption of both farmed species should be considered as safe for human health.