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Determination of Bioactive Components and Antimicrobial Activity of Bee Pollen and Investigation of Food Safety Hazards in Terms of Microplastics-Related Chemical Markers
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Bee pollen, a popular health supplement, was found to contain beneficial plant compounds (like quercetin) that help fight harmful bacteria such as staph—but researchers also detected chemical traces linked to microplastics in many of the samples tested. This suggests that even natural, "healthy" foods like bee pollen aren't immune to plastic contamination, reinforcing the need for better monitoring of these products before they reach store shelves.
This study evaluated the microbiological quality, phenolic compound profile, antimicrobial activity against foodborne pathogens, and the presence of potential chemical markers associated with microplastic polymers in 35 commercial bee pollen samples obtained from the seven geographical regions of Türkiye. Microbiological analyses included the enumeration of total mesophilic aerobic bacteria, coliforms, yeasts and molds, lactobacilli, lactococci, and psychrophilic bacteria. Antimicrobial activity was determined against Escherichia coli O157:H7, Staphylococcus aureus, and Salmonella Enteritidis using the disk diffusion method. Phenolic compounds were analyzed by HPLC-DAD, while characteristic pyrolysis products associated with microplastics were analyzed by PY-GC/MS. The results indicated that the pollen samples generally exhibited low microbial contamination levels and variable antimicrobial activity, depending on their geographical origin. Quercetin was identified as the predominant phenolic compound, and samples with higher phenolic content tended to show stronger antimicrobial effects, particularly against S. aureus. PY-GC/MS analyses revealed the presence of several chemical markers potentially associated with plastic polymers in a considerable proportion of the samples. Spearman correlation analysis showed a positive correlation between total phenolic content and particularly S. aureus inhibition. These findings highlight the nutritional and functional value of bee pollen while also drawing attention to emerging food safety concerns related to possible exposure to plastic-associated environmental contaminants. Regular monitoring of bee pollen is therefore recommended to ensure product quality and consumer safety.
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This review examines underexplored food safety risks in bee products like honey, royal jelly, and propolis, including contamination from microplastics and other environmental pollutants. Bees can pick up microplastics from the environment during foraging, transferring them into hive products that humans consume. The authors highlight that while pesticides and heavy metals in honey are well studied, microplastic contamination in beekeeping products needs more attention.
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Researchers analyzed 28 Italian honey samples and found microplastic contamination alongside various trace elements, making this the first comprehensive dual-contamination study of Italian honey. Microplastics were found in all samples, with fibers being the most common type, and their presence correlated with certain geographic and botanical factors. The findings show that honey, often considered a natural and pure food, can serve as an indicator of broader environmental contamination that affects food safety.
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This review summarizes existing research on microplastics found in honey. It reports that bees can carry microplastics from air, soil, water, pollen, and nectar into hives, and that beekeeping equipment and packaging can also add contamination.
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This review examines whether microplastics pose a risk to honey bee populations, noting that microplastics have been detected in honey samples and on bees collected from both urban and rural areas. Researchers found that exposure to certain polymer types may affect bee health, and the study calls for more research to understand the risks of microplastic exposure to pollinators and the broader implications for ecosystem health.
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