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Title: Comparative study of the intake of toxic persistent and semi persistent pollutants through the consumption of fish and seafood from two modes of production (wild-caught and farmed)
Authors: Rodríguez Hernández, Ángel 
Camacho, Maria 
Henríquez Hernández, Luis Alberto 
Boada, luis d 
Fernández Valerón, Pilar 
Zaccaroni, A.
Zumbado, Manuel 
Almeida-González, Maira 
Rial Berriel, Cristian 
Pérez Luzardo, Octavio L 
UNESCO Clasification: 3206 Ciencias de la nutrición
320611 Toxicidad de los alimentos
251092 Acuicultura marina
Keywords: Aquaculture
Heavy metals
Organochlorine pesticides
Polychlorinated biphenyls
Polycyclic aromatic hydrocarbons
Issue Date: 2017
Journal: Science of the Total Environment 
Abstract: Adverse effects of chemical contaminants associated with seafood counteract the undoubted benefits for the health of its valuable nutrients. So much so that many dietary guidelines recommend no more than one serving a week of fish and seafood. Although is estimated that aquaculture provides more than 50% of the fish and seafood consumed globally, few research studies have focused in the assessment of the intake of pollutants through aquaculture products. In this study we determined the levels of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and toxic elements (Pb, Cd, Ni, Al, As, and Hg) in a large sample of farmed and wild-caught seafood, and we estimated the intake of these contaminants in two hypothetical models of consumers: those consuming only farmed fish, and those consuming only wild fish. Measured levels of most organic and many inorganic pollutants were higher in aquaculture products, and consequently intake levels if only such products were consumed would be also significantly higher. Thus, the intake of ∑ PAHs in adults consuming aquaculture seafood would be 3.30 ng/kg-bw/day, and consuming seafood from extractive fishing 2.41 ng/kg-bw/day (p < 0.05); ∑ OCPs, 3.36 vs. 1.85 ng/kg-bw/day, respectively (p < 0.05); ∑ PCBs, 2.35 vs. 2.11 ng/kg bw/day, respectively; and the intake of Pb, Ni, As, and Al would be also significantly higher consuming farmed seafood. For children the estimations were very similar, but the difference of intake of PCBs reached statistical significance. The implementation of several decontamination practices in aquaculture would allow not only match the levels of pollution from wild-caught seafood, but also could provide products with much lower levels of pollutants than those, which in turn would allow to increase consumption over the “one serving per week”, and so benefit the consumer of the enormous positive health effects of the valuable nutrients of seafood.
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2016.09.142
Source: Science Of The Total Environment[ISSN 0048-9697],v. 575, p. 919-931
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