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1. [1] Environmental Science & Technology / Yadav, Khan, Quadir et al. — Cutting Boards: An Overlooked Source of Microplastics in Human Food? Nghiên cứu chính

   Cutting Boards: An Overlooked Source of Microplastics in Human Food?

   Thống kê

   Polyethylene boards release ~14-71 million microplastic particles per person per year (7.4-50.7 g); polypropylene boards release ~79 million particles per year (~49.5 g); wooden boards shed 4-22x more microparticles by count than plastic boards

   Trích đoạn

   “"Depending on the chopping pattern, board material, and the produce being chopped, our estimates suggest microplastics generation of 14-71 million from polyethylene chopping boards and 79 million from polypropylene chopping boards each year per person. Wooden chopping boards released 4-22 times more microparticles than plastic boards in tests." ”

   Dữ liệu nguồn từ

   2023-05-23

   Truy cập

   2026-05-24 · bản sao lưu trữ

   Tính toán

   Yadav et al. quantified microplastic release per cut on polyethylene (PE) and polypropylene (PP) boards using carrot chopping protocols, then scaled to annual estimates assuming ~500 cuts per day (≈128,000 cuts per year). Per-cut release was 1-14 particles for PE and 3-15 for PP. Mass estimates: 7.4-50.7 g/year for PE, ~49.5 g/year for PP. As a counter-intuitive control, the authors also tested wooden boards and found they shed 4-22x more microparticles per cut by number, but those particles are cellulose-based wood fibers rather than plastic. The study also performed cytotoxicity testing of the released PE microplastics on mouse cell lines and found no significant change in cell viability — quantifying the exposure but not demonstrating harm. The annual particle counts are the most-cited figures driving public anxiety, but they describe what is shed into food, not what causes disease.

   Độc lập

   Independent NDSU laboratory study using direct gravimetric and particle-counting measurements; not funded by EFSA, FDA, or any industry body.

2. [2] Environmental Health Perspectives / Gan, Chen, Yao et al. — Simulated Microplastic Release from Cutting Boards and Evaluation of Intestinal Inflammation and Gut Microbiota in Mice Nghiên cứu chính

   Simulated Microplastic Release from Cutting Boards and Evaluation of Intestinal Inflammation and Gut Microbiota in Mice

   Thống kê

   Mice fed diets contaminated by PP cutting boards (1,088 µg/g MP) showed elevated CRP, TNF-α, IL-1β, and reduced tight-junction proteins; PE-board diets (1,211 µg/g MP) shifted gut microbiota without inducing measurable inflammation; willow wooden boards produced neither effect

   Trích đoạn

   “"PP boards released MPs causing significantly higher inflammatory biomarkers and compromised intestinal tight junction expression. PE boards altered gut microbiota, with decreased Firmicutes and increased Desulfobacterota, plus changes in fecal and liver metabolites, but minimal inflammation." ”

   Dữ liệu nguồn từ

   2025-04-09

   Truy cập

   2026-05-24 · bản sao lưu trữ

   Tính toán

   Gan et al. cut food on PP, PE, and willow wooden boards over 4- and 12-week feeding cycles, then fed the resulting contaminated food to mice and measured intestinal and metabolic outcomes. PP exposure produced inflammation signals (elevated serum CRP, TNF-α, IL-10, LPS; ileum/colon IL-1β and oxidative stress; reduced occludin and ZO-1). PE exposure shifted gut microbiota composition (decreased Firmicutes, Lactobacillus, Bifidobacterium; increased Desulfobacterota) with changes in fecal and liver metabolites but no overt inflammation. The authors explicitly caveat that they used commercial MP pellets rather than environmentally released particles, that no tissue bioaccumulation was detected despite systemic effects, and that the mouse model does not predict human disease outcomes. The study is the most rigorous animal experiment on this exposure route to date, and its finding is two-tier: PP raises mechanistic concern, PE raises microbiome concern, neither has been translated to human epidemiology.

   Độc lập

   Independent Chinese laboratory study published in EHP (NIEHS); methodologically distinct from the Yadav 2023 quantification work.

3. [3] European Food Safety Authority (EFSA Supporting Publication EN-9733) — Literature review on micro- and nanoplastic release from food contact materials during their use ↗ 1 other entry Báo cáo chính phủ

   Literature review on micro- and nanoplastic release from food contact materials during their use

   See all 2 Likelier entries citing this source →

   Thống kê

   EFSA 2025 review of FCM-derived micro- and nanoplastic release concluded that current studies likely overestimate quantities, nanoplastic data remain insufficient, and reliable exposure estimates are not yet possible; formal scientific opinion on microplastics in food not expected until end of 2027

   Trích đoạn

   “"While there is clear evidence of microplastic release from food contact materials, the actual quantities are likely lower than many studies suggest. Nanoplastics data remain insufficient, and current evidence does not support reliable exposure estimates." ”

   Dữ liệu nguồn từ

   2025-10-28

   Truy cập

   2026-05-24 · bản sao lưu trữ

   Tính toán

   EFSA's October 2025 literature review covered over 100 studies on micro- and nanoplastic release from food contact materials, including chopping boards. The review identified mechanical stress (abrasion, friction, cutting) as the dominant release pathway, exacerbated by aging materials. Critically, EFSA judged that current quantification studies (including headline estimates like Yadav 2023) likely overstate exposure because measurement methodology tends to bias toward over-counting, and that nanoplastic data are too sparse to support reliable risk assessment. EFSA's formal scientific opinion on microplastics in food is scheduled for end of 2027 — until then, no European regulatory threshold exists for cutting-board-derived microplastic exposure. The absence of a quantified opinion after years of review is itself the evidence: this is a pre-epidemiological field.

   Độc lập

   EFSA literature review is independent EU regulatory analysis; covers but does not endorse individual primary studies including Yadav 2023.

4. [4] World Health Organization — Microplastics in Drinking-Water ↗ 2 other entries Báo cáo chính phủ

   Microplastics in Drinking-Water

   See all 3 Likelier entries citing this source →

   Thống kê

   No reliable evidence that microplastic exposure at current ingestion levels poses a measurable risk to human health; particles larger than 150 micrometres unlikely to be absorbed from the gut

   Trích đoạn

   “"Based on the limited information we have, microplastics in drinking water don't appear to pose a health risk at current levels. But we need to find out more." ”

   Dữ liệu nguồn từ

   2019-08-22

   Truy cập

   2026-05-24 · bản sao lưu trữ

   Tính toán

   WHO's 2019 review synthesised global evidence on microplastic ingestion and human health. Its key technical conclusion is relevant to cutting-board exposure: particles larger than ~150 µm are unlikely to be absorbed across the intestinal wall, and gut uptake of smaller particles is expected to be limited. The size distribution of cutting-board microplastics reported by Yadav 2023 spans the micrometre to sub-millimetre range — overlapping with WHO's "unlikely to be absorbed" bracket for the larger particles, but extending into the smaller end where uptake is plausible but unquantified. WHO did not identify a quantifiable population-level risk from any current microplastic ingestion source, supporting the no_reliable_estimate classification.

   Độc lập

   WHO global review independent of EFSA process and individual primary studies.

5. [5] Journal of the Academy of Nutrition and Dietetics — Microplastic Contamination from Plastic Cutting Boards: An Overlooked Risk in Food Preparation and Human Health Được bình duyệt

   Microplastic Contamination from Plastic Cutting Boards: An Overlooked Risk in Food Preparation and Human Health

   Thống kê

   2025 systematic review of peer-reviewed studies (2016-2024) on cutting-board microplastic ingestion confirmed measurable shedding in household and commercial food-service settings but reported no human epidemiological evidence linking exposure to defined disease outcomes

   Trích đoạn

   “[Paraphrase from secondary summary — full text paywalled, primary source verified to exist at the cited URL via search index]: studies confirm that slicing and chopping on plastic boards result in microplastic shedding that enters prepared food; direct human health effects at observed dietary exposure levels have not been established; current evidence derives from in vitro and animal models. ”

   Dữ liệu nguồn từ

   2025-09-01

   Truy cập

   2026-05-24

   Tính toán

   Systematic review published in the journal of the Academy of Nutrition and Dietetics covering peer-reviewed literature on cutting-board microplastic contamination 2016-2024. The review's central finding aligns with the rest of the cited evidence: shedding is reproducibly measurable, mechanistic and in vivo animal studies suggest plausible pathways (intestinal inflammation, microbiome shifts), but no human cohort or case-control study has measured attributable disease from this specific exposure route. The review also notes that the most effective practical mitigations are board material substitution (glass, ceramic, stainless steel) and replacing worn boards, but stops short of recommending behaviour change on the basis of demonstrated risk.

   Độc lập

   Independent academic systematic review by registered dieticians; not affiliated with the Yadav, Gan, or EFSA analyses cited above.