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Influence of different food matrices on the abundance, characterization, migration kinetics and hazards of microplastics released from plastic packaging (PP and PET)

Food Chemistry 2025 12 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 68 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Qingrun Liu, Qingrun Liu, Qingrun Liu, Qingrun Liu, Yulun Chen, Yulun Chen, Qingrun Liu, Qingrun Liu, Qingrun Liu, Qingrun Liu, Qingrun Liu, Qingrun Liu, Yulun Chen, Qingrun Liu, Qingrun Liu, Yulun Chen, Qingrun Liu, Qingrun Liu, Qingrun Liu, Jingkai Fang, Yulun Chen, Jingkai Fang, Qingrun Liu, Yulun Chen, Zitian Liu, Zitian Liu, Yulun Chen, Yulun Chen, Hang Yu, Yulun Chen, Weirong Yao Shaofeng Yuan, Shaofeng Yuan, Hang Yu, Hang Yu, Hang Yu, Weirong Yao Qi‐Wen Chen, Zhe Chen, Zhe Chen, Hang Yu, Shaofeng Yuan, Shaofeng Yuan, Hang Yu, Weirong Yao Yulun Chen, Weirong Yao Weirong Yao Weirong Yao Weirong Yao Zhe Chen, Yulun Chen, Shaofeng Yuan, Shaofeng Yuan, Zhe Chen, Weirong Yao Hang Yu, Yulun Chen, Qingrun Liu, Shaofeng Yuan, Hang Yu, Weirong Yao

Summary

Scientists found that plastic food packaging (PP and PET) releases microplastics into food, with acidic and oily foods causing the most release -- over 1,300 particles per piece of packaging. The study showed that aging and oxidation of the plastic accelerate this process, and hazard assessments confirmed these released particles pose risks to human health.

Polymers

PET PP

The effect of food matrix on the release of microplastics from plastic packaging was investigated by treating plastic samples with various food simulants. MPs were released during simulated conditions, and their main source was the separation of plastic samples subjected to ageing. Acidic high oil simulants resulted in the greatest abundance of MPs (1311.33 ± 262.22 and 1414.00 ± 214.52 items/piece). Dual constant kinetic model and Elovich kinetic model described the process well (R > 0.9019), indicating the release rate of MPs was mainly controlled by characteristics of plastics and environment. Characterization showed the morphology of plastics became rougher, carbonyl index increased, crystalline shapes changed and proportion of O increased. The release mechanism was deduced to be deterioration of the plastic by oxidative reactions. Finally, hazard assessment methodologies were developed, the results showed these MPs are hazardous to humans. It is hoped that this study will draw more attention to the harmful effects of MPs.

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