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Microplastics in food: Occurrence, toxicity, green analytical detection methods and future challenges
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This review examines how microplastics enter the human food chain through seafood, drinking water, salt, honey, and other products, and assesses what is known about their health effects. The authors also evaluate newer, more environmentally friendly analytical methods for detecting microplastics in food samples. While the full health impacts remain uncertain, the widespread presence of microplastics in food makes continued monitoring and research essential.
• Microplastic occurrence has been critically analyzed. • Microplastic routes of entry and toxicity was assessed. • Green analytical methods for microplastic detection from food samples was addressed. • Challenges associated with the used of green methods for microplastic detection from food samples were addressed. The pervasive presence of microplastics (MPs) in the environment has raised significant concerns about their infiltration into the human food chain. In current review, the occurrence and distribution of MPs in various food matrices such as seafood, drinking water, fruits, vegetables, and beverages are discussed along with their potential routes of MPs entry into the human food chain. The toxicity of MPs on human health and different organs are discussed in brief. Current technological advancement and green analytical methods for the detection of MPs in food samples are compared, discussing their advantages and limitations. Green analytical methods, including stereomicroscopy, Fourier Transform Infrared spectroscopy, Raman spectroscopy, and enzymatic digestion, are evaluated for their efficacy and environmental impact. The Analytical Eco-Scale is used to assess the greenness of these methods. Challenges associated with MPs detection in food, such as complex food matrices, pretreatment methods, and variability in MPs concentrations, are addressed.
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