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Microplastics contamination in cockles and green mussels distributed in local markets in Semarang
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Microplastics were found in cockles and green mussels distributed in local markets in Semarang, Indonesia, raising concerns about seafood safety given that Indonesia is the world's second-largest contributor of plastic waste to the ocean. Consumers eating locally sold shellfish in this region are likely being exposed to microplastics.
Indonesia has been indicated as the second largest contributor of mismanaged plastic waste ending up in the ocean.Java, as the most populated island in Indonesia, contributes 0.116 - 0.145 million tonnes plastics waste per year. This may lead to massive accumulation of microplastics in this coastal area and through thropic transfer these pollutants may contaminate commonly consumed seafood species. Our proveious study revealed the presence of microplastics in some seafood species colledted from coastal areas in Semarang. In this study, we investigated microplastics contamination in widely consumed bivalves that are distributed in Semarang. Cockles (Anadara granosa) and green mussels (Perna viridis) were taken from three local markets in Semarang. The microplastics materials were extracted using alkaline digestion and followed by NaI treatment to isolate the particles. The microscope observation was performed to detect microplastic particles. The result showed that both cockles and green mussels taken from the local markets in Semarang contained microplastics in the form of fragment, fiber,spheres, and film. Thes findings highlight that microplastics have been contaminates our daily food. Further investigation on the risk of ingested microplastics to human health will be urgently needed.
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Microplastic contamination in green mussels (Perna viridis Linnaeus, 1758) collected from the traditional fish markets along the East Java coast of Indonesia and the associated risk assessment
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Researchers analyzed green mussels from five traditional fish markets along the East Java coast of Indonesia and found microplastic contamination in all samples, primarily in the form of fibers and fragments smaller than 500 micrometers. The polymer hazard index ranged from high to very high across all market locations, and various harmful chemicals associated with plastic production were detected in the mussel tissues. The findings raise health concerns for communities that regularly consume these mussels as a dietary staple.
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Researchers surveyed microplastic contamination in coastal sediments and cockles along the East Java coast of Indonesia and assessed the potential health risks from consuming the shellfish. They found microplastics, predominantly fibers and fragments, in all sediment and cockle tissue samples, with consumers potentially ingesting tens of thousands of microplastic particles per year. The findings raise concerns about dietary microplastic exposure for communities that regularly eat shellfish from these waters.
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Researchers measured microplastic contamination in three commercially important seafoods from coastal Indonesia — milkfish, blood cockles, and green mussels — finding that all three contained plastic particles, with green mussels carrying the highest load at an average of 71 particles per individual. The variety of polymer types detected, including rubber and styrene compounds, confirms that microplastics are entering the human food chain through commonly consumed seafood.
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