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Analysis of Microplastics in Beer by Vibrational Spectrometry
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Scientists developed a better way to detect tiny plastic particles in beer using a specialized microscope, finding mostly polypropylene, a common plastic, showing up even in early brewing stages. This means plastic contamination may enter beer before it's even finished, though more research is needed to know what this means for our health.
This study evaluates the suitability of Fourier-transform infrared (FTIR) microscopy for detecting microplastics in commercial beers and brewing intermediates. Samples were isolated by vacuum filtration using 0.2 µm aluminum oxide membrane filters and subsequently analysed in transmission mode with an FTIR microscope equipped with a focal plane array (FPA) detector. To improve the signal-to-noise ratio and reduce the large data volume generated during hyperspectral imaging, a 4×4 pixel binning approach was applied. The resulting hyperspectral datasets were processed using the automated siMPle software. The results revealed notable challenges in matrix removal. Treatment with Fenton's reagent caused mechanical instability of the filters and the formation of an infrared-opaque crust, which complicated the subsequent analysis. Despite these limitations in sample preparation, the optimized analytical workflow enabled the detection of microplastic contamination, predominantly polypropylene particles, even in early brewing stages such as sweet wort and hopped wort. Overall, the integration of FTIR mapping, pixel binning, and automated data processing represents a time-efficient and robust strategy for monitoring microplastics in food production systems.
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Researchers quantified microplastic particles in locally brewed and packaged beers from Malaysia and estimated weekly consumer ingestion, finding beer to be a measurable but underexplored dietary pathway for microplastic exposure.
A Survey on Detection of Plastic-Related Chemicals in Beer Packaged in PET Using FT-IR Technology
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Researchers used FT-IR spectroscopy to detect plastic-related chemicals in PET-packaged beer, finding evidence of plastic constituent migration into the beverage and demonstrating that semi-quantitative infrared analysis can provide useful insight into microplastic and chemical contamination of food and drinks.
Synthetic particles as contaminants in German beers
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Researchers analyzed 24 brands of German beer and found microplastic contamination — including fibers, fragments, and granules — in all samples, with concentrations varying widely by brand and production batch. The findings add beer to the growing list of commonly consumed food and beverages shown to contain microplastics.
Application of Fourier-Transform Infrared Spectroscopy in Detecting Microplastics in Beer
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This Croatian-language paper reviews the use of Fourier-transform infrared spectroscopy (FT-IR) to detect microplastics in beer, finding that plastic packaging can shed particles into beverages. The study raises concerns about microplastic contamination of food products packaged in or processed with plastic materials.
A microscopic survey on microplastics in beverages: the case of beer, mineral water and tea
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Researchers tested beer, bottled mineral water, and tea from around the world and found microplastics in every sample without exception. Beer contained 20 to 80 microplastic particles per milliliter, mineral water about 10 per milliliter, and tea leaves carried 200 to 500 per gram, with different plastic types identified in each beverage. The findings highlight that everyday drinks are a routine source of microplastic exposure for consumers.
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