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Plastic pervasive in food supply, says new study:
Micro and nanoplastics are pervasive in our food supply and may be affecting food safety and security on a global scale, a new study led by CSIRO, Australia's national science agency, has found.
The study is one of the first to analyze the academic literature on microplastics from a food safety and food security risk viewpoint, building on past studies which primarily tracked plastics in fish.
It shows that plastics and their additives are present at a range of concentrations not only in fish but in many products including meat, chicken, rice, water, take-away food and drink, and even fresh produce.
CSIRO analytical chemist, food safety specialist and lead author of the paper, Dr. Jordi Nelis, said these plastics enter the human food chain through numerous pathways, such as ingestion as shown in the fish studies, but one of the main ways is through food processing and packaging. The research is published in the journal TrAC Trends in Analytical Chemistry.
[...] There are currently no definitive studies that demonstrate micro and nanoplastics in the environment cause harm to humans, however more research is needed to fully understand health effects.
[...] "The key missing information is determining safe levels of microplastics. We currently don't know exactly what the microplastic flux through the food system is or which levels can be considered safe," Dr. Nelis said.
Journal Reference:
Joost L.D. Nelis et al, The measurement of food safety and security risks associated with micro- and nanoplastic pollution, TrAC Trends in Analytical Chemistry (2023). DOI: 10.1016/j.trac.2023.116993
(Score: 2) by Barenflimski on Tuesday May 23 2023, @04:23AM (2 children)
I just finished with the Spring garden stuff. There is so much plastic, it blew my mind. i don't use plastic in the garden. I use leaves, seeds and dirt.
It's all little pieces.
All I can figure is that it blows in over the year as its an assortment of crap from pieces of trashbags, plastic singe use bags, green bits, red bits, black bits, blue bits.
I spent 10 minutes picking it all up, and I had two full handful's of various crap. I don't live in a super populated area. We're talking 1000 square feet here.
(Score: 3, Interesting) by istartedi on Tuesday May 23 2023, @08:42AM
This happens here too. I always find shreds of plastic tarp. I thought the last occupant had buried one here, and I'd eventually get rid of it all. Then this January we had a huge wind and rain storm, and I actually witnessed tarp shreds raining down on to my property.
Yep, trash pickup too--it's not perfect. The trucks lose a little all the time, but mostly plastic blows in from littering, illegal dumping, and people allowing worn-out stuff like tarps to just sit there.
Then you've got the animals. Some of them choke on plastic, but others use it as nesting material. What bird or gopher wouldn't want a nest lined with the latest in modern materials? Oh, I don't like that color though. It's the wrong shape for my nest. I shredded too much. I'll just leave it wherever.
A few weeks ago, I found an isolated Lego in the driveway. Some crow needs that to complete their set.
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(Score: 0) by Anonymous Coward on Wednesday May 24 2023, @01:08AM
Another source of micro plastic is car & truck rubber tires. Tire rubber is a polymer too--very long chain molecules suitably cross linked to give the appropriate amount of flexibility, wear resistance and many other properties.
The Euros have been looking into where the wear particles go for some years now and other countries are starting to catch on. The smallest particles float away from roads and they are in all our lungs. Best to not live downwind of any big highway intersection where there is a lot of braking for a stop sign or stop light--it's the slip induced by braking, cornering and accelerating that causes most of the tire wear.