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Microplastic contents from maricultured and natural mussels

Marine Pollution Bulletin 2018 238 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Monia Renzi, Cristiana Guerranti, Andrea Blašković

Summary

Researchers compared microplastic content in maricultured and wild mussels from Italian waters and found no significant difference between the two sources, with all recovered particles being filaments. The study estimates that consuming raw mussels could result in a median intake of 6 to 7 microplastic items per gram, highlighting a consistent route of human dietary exposure regardless of whether mussels are farmed or wild-caught.

Results of this research focuses on microplastic contents (levels, type, size, colour) in maricultured and natural mussels (Mytilus galloprovincialis) from different Italian stocks. No significant differences were found among maricultured and natural stocks. All recovered MPs are filaments ranging within 750-6000 μm of maximum length (average values 1150-2290 μm). Feeding raw mussel could produce median MP intakes of 6.2-7.2 items/g w.w. Concerning human exposure by diet, both raw and cooked values are important. Some preliminary tests performed in this study evidenced that the cooking process determined lower MPs levels (-14%) in cooked tissues compared to raw ones, MPs were recorded in cooking water and were characterized by a lower size than in raw mussels. Results obtained by this study represent an important baseline on MPs level to evaluate environmental and human exposure risks by diet.

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