高温下外卖包装安全吗？

Core Viewpoint - The discussion around the potential release of harmful substances from food delivery packaging at high temperatures has gained attention, with experts providing insights into microplastics and perfluorinated compounds [1][2] Group 1: Microplastics - China has 545 million online food delivery users, making it the largest food delivery market globally [1] - Microplastics are defined as plastic particles smaller than 5 millimeters, which can enter the human body through food [1] - Research indicates that while microplastics can impact biological organisms, the concentrations used in toxicity tests are significantly higher than what humans encounter in natural environments [1][2] - A study published in the Journal of Hazardous Materials found that pouring hot water (around 85°C) into disposable paper cups can release approximately 25,000 microplastic particles after 15 minutes [2] Group 2: Perfluorinated Compounds - Perfluorinated compounds are synthetic organic substances known for their chemical stability and resistance to high temperatures, previously used in industrial and consumer products [2] - Research has shown that these compounds can accumulate in the food chain and may cause liver damage, disrupt endocrine functions, and affect reproductive development if they persist in the human body [2] - Many products now explicitly prohibit the addition of perfluorinated compounds, and current disposable paper cups primarily use PE or biodegradable plastic coatings, minimizing the use of these harmful substances [2] Group 3: Recommendations for Food Safety - To ensure food safety, it is recommended to choose food packaging that meets national standards and to avoid storing hot food in plastic containers for extended periods [2] - Repeated use of plastic containers is discouraged, and the use of reusable, eco-friendly utensils is encouraged [2]