In daily life, non-stick cookware has steadily occupied the must-have list of many home kitchens due to its convenience and efficiency, and has become an indispensable right-hand man when cooking. However, a recent scientific study has revealed a worrying problem: the coating of nonstick pans, in the inadvertent small scratches, may release millions of microplastic particles into our food. This discovery is not only about the safety of our diet, but also a potential threat to our health.
1. The "secret" of non-stick pans
The secret to ensuring that the ingredients are non-stick during cooking lies in the coating that covers the inner layer with exceptional low-friction properties, effectively reducing the direct contact and adhesion of the ingredients to the surface of the pan. The essence of this unique coating lies in the PTFE material, also known as Teflon, which is known worldwide for its exceptional properties and is a leader in the industry. PTFE is essentially a plastic that is known for its superior resistance to corrosion and high temperatures. However, it is this seemingly harmless plastic coating that can hide huge health risks after being bumped and bumped by everyday use.
2. Shocking discoveries in the journey of discovery
In August, researchers from Newcastle and Flinders University in Australia joined forces to unveil a breakthrough discovery in the field of scientific research on the authoritative platform of Holistic Environmental Science. The research team used cutting-edge Raman spectroscopy and electron microscopy to reveal the fine structural changes of non-stick pan coatings during daily wear and tear. The findings are striking: even subtle scratches that are invisible can significantly release large amounts of microplastics and nanoplastic particles, and the scale of the results cannot be ignored. Detailed analysis shows that even a tiny few millimeters of damage to the coating can release a staggering 2.3 million PTFE microplastic particles; At the same time, the imperceptible cracks and their edges also contain thousands to tens of thousands of microplastic particles, and their huge number constitutes an environmental problem that cannot be ignored.
To illustrate this phenomenon more visually, the research team also simulated the actual use of nonstick pans. In order to gain a better understanding of the release mechanism of coated plastics, the research team selected new pots and pans and two-year-old pots as samples to simulate daily stir-frying cooking, and carefully compared the unique effects of stainless steel spatulas and wooden spatulas on the release of coated plastics during the cooking process. Experimental data shows that the amount of plastic debris released by the coating of old pots and pans after two years of cooking shows a significant increase compared to new pots. Of particular interest is the fact that the new pan stir-fried with a stainless steel spatula has an astonishing plastic release density of 11.5/μm2; In contrast, the release density of coated plastic in old pots climbed sharply to 14.9/μm2 under the use of wooden shovels, showing a more significant increasing trend.
3. Hidden risks of microplastics to human health
What are the effects of these microplastic particles on our health when they enter food? First of all, it should be clear that PTFE is chemically stable, and even if it is ingested by the human body, it is unlikely to react with other substances to produce new harmful substances. The problem, however, is that PTFE belongs to the family of per- and polyfluoroalkyl substances (PFAS), which are highly environmentally persistent and bioaccumulative. Once they invade the human body, the half-life of microplastics can be extended to 10 years, and there may be potential toxicity concerns that cannot be ignored in the long run.
In-depth toxicological studies have shown that PFAS have clearly induced hepatic, reproductive and immune toxicity in animals, and carry potential carcinogenic risks. While further research is needed on the specific effects of PFAS on human health, the available evidence suggests that long-term intake of PFAS may increase the risk of cancers such as kidney, testicle, ovarian, and more. PFAS may also affect a child's social and physical development and is even associated with an increased risk of developing autism spectrum disorder (ASD).
4. How can I protect myself and my family?
Replace your non-stick pan regularly: The coating of your non-stick pan is not durable, and it will age and peel off over time. It is recommended to replace the non-stick pan every 2-3 years to ensure the integrity and safety of the coating.
Avoid using sharp tools: In daily use, try to avoid using sharp tools such as metal spatulas and knives to scratch the non-stick pan coating to reduce the occurrence of scratches and breakage.
Smart Cooking Choice: Avoid high temperatures to prevent PTFE from destabilizing and releasing potentially harmful substances. Therefore, it is recommended to implement low-temperature cooking in a non-stick pan to prevent long-term high-temperature roasting and dry burning to ensure safety.
Choose a variety of cookware: In addition to nonstick pans, you can also consider using other types of cookware, such as iron pans, stainless steel pans, etc. These cookware, while not as convenient as nonstick pans, are comparatively safer and more durable.
Pay attention to product identification: When buying non-stick pans, pay attention to check the product identification and certification information, and choose products from regular brands and manufacturers. In addition, paying attention to product usage guidelines and maintenance tips can also be beneficial in prolonging the life of the product.
Non-stick pans, a convenient tool in modern kitchens, greatly enhance our cooking experience and life convenience. With the deepening of scientific research, we are increasingly aware of the hidden health risks behind it. In the face of this challenge, we need to look at and use nonstick pans more rationally, and reduce risks by replacing them regularly, avoiding scratches from sharp tools, and cooking at low temperatures. In addition, paying attention to and diversifying the use of other types of cooking utensils is also an important part of ensuring food safety and health. After all, health is a priceless treasure that deserves our dedication, care and cherishment.
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