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New Perspectives on Canned Fish Quality and Safety on the Road to Sustainability
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This review revisited the effects of canning on seafood quality and safety, finding that while canning preserves nutritional value and extends shelf life with lower energy costs, it can alter key components, allow persistent contaminants to remain, and generate undesirable compounds—with sustainability implications for the industry.
Canning extends the shelf life of seafood products while preserving their quality. It is increasingly considered a more sustainable food processing method due to the primary fishing methods used for key species and the lower energy costs compared to the production of fresh and frozen fish. However, canning can change key components, allow some contaminants to persist, and generate undesirable compounds. This review revisits the effects of canning on product quality and highlights the potential hazards that may compromise safety. It also examines emerging trends in product development, particularly novel formulations aimed at optimizing nutritional value while maintaining safety standards without compromising sustainability. Overall, the quality of most canned seafood meets industry requirements, for example, with improvements in processing strategies and strict safety protocols, leading to reduced histamine levels. However, data on marine biotoxins and microplastics in canned seafood remain limited, calling for more research and monitoring. Environmental contaminants, along with those generated during processing, are generally found to be within acceptable limits. Product recalls related to these contaminants in Europe are scarce, but continuous monitoring and regulatory enforcement remain essential. While new formulations of canned fish show promise, they require thorough evaluation to ensure both nutritional value and safety.
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Microplastic contamination in seafood: Comparison between fresh and canned samples
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Researchers compared microplastic levels in fresh versus canned versions of four seafood species and found that canned seafood had significantly higher contamination — up to three times more microplastics per gram — suggesting the canning process itself introduces additional plastic particles. This raises new food safety concerns, as consumers eating canned seafood may be ingesting more microplastics than those eating fresh.
Abundance, composition, and potential intake of microplastics in canned fish
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Researchers examined canned tuna and mackerel products for microplastic contamination and found plastic particles present in all samples tested. Fibers were the most common particle type, and polymer analysis identified materials consistent with packaging components. The study estimates potential human microplastic intake from canned fish consumption and highlights the need for further investigation into how processing and packaging contribute to seafood contamination.
Exploring the Complexities of Seafood: From Benefits to Contaminants
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This review examines the dual nature of seafood as both a nutritional powerhouse and a potential source of harmful contaminants, including microplastics, heavy metals, and pathogens. While seafood provides essential omega-3 fatty acids and protein, contamination from microplastics and other pollutants can offset these benefits and pose health risks. The authors call for better monitoring and safety standards to ensure that the health benefits of eating seafood are not undermined by environmental contamination.
Seafood Sustainability - Series I
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This special journal issue on seafood sustainability includes articles covering consumption patterns, capture fisheries management, and aquaculture. It notes that microplastic pollutants in seafood carry flame-retardant chemicals that may be hazardous to human health, linking plastic pollution to seafood safety.
Uncovering microplastics contamination in canned seafood
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Researchers tested multiple types of canned seafood and found microplastic contamination in every single product examined, with an average of 3.5 particles per can. Octopus in tomato sauce and tuna in olive oil had the highest contamination levels, and polyester fibers were the most common type found. This study identifies canned seafood as yet another pathway through which people are regularly consuming microplastics, with contamination potentially introduced during the processing and canning stages.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.