4.7 Article

Are mercury levels in fishery products appropriate to ensure low risk to high fish-consumption populations?

Journal

MARINE POLLUTION BULLETIN
Volume 186, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2022.114464

Keywords

Mercury content in seafood; Methylmercury; Culinary treatments; Food quality; Health risk

Ask authors/readers for more resources

The main goal of this study is to determine the sources of methylmercury (MeHg) for high fish-consumption populations, using the Portuguese population as a showcase. Cooked and raw samples of codfish, hake, octopus, horse mackerel, and sardine were considered. The results showed that the loss of moisture during cooking increases MeHg and total mercury concentrations in fish, and the ratio of MeHg to T-Hg in grilled sardines was determined to be 0.43.
The main goal of the present study is to determine the sources of methylmercury (MeHg) for high fish -consumption populations with the Portuguese population as showcase, as Portugal is the EU country with the highest fish consumption per capita (2019: 59.91 kg year-1). Since limited information is available on the effective levels of mercury after culinary treatments, cooked and raw codfish (Gadus morhua), hake (Merluccius merluccius), octopus (Octopus vulgaris), horse mackerel (Trachurus trachurus) and sardine (Sardina pilchardus) were considered. The mercury concentration ranking Hake > Horse mackerel > Codfish > Octopus > Sardine was observed in all situations (cooked and raw samples) for both MeHg and total mercury (T-Hg). The gathered results reinforce the general assumption that the loss of moisture during cooking increases MeHg and T-Hg concentrations in fish, but the idea that MeHg in fish muscle tissue represents the bulk of T-Hg cannot be generalised, as our study determined a MeHg/T-Hg ratio of 0.43 for grilled sardines.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available