‘Smart tags’ can sense when food or medicine go bad

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The inexperienced tag on the container signifies that the product within is no longer recent.

(Credit score: Chao Zhang)

What if you by no means had to do a scent check for spoiled milk once more? As a substitute of having to take a whiff of the bitter liquid, you might simply test the shade of a small tag positioned on the container.

This is precisely what researchers at Peking College in Beijing, China, are working on: coloration-coded “sensible tags.”

These corn kernel-sized tags can be caught to containers of meals or medication and have the capabilities of figuring out whether or not the meals has long gone unhealthy or if the drugs are nonetheless lively. What’s extra, these tags will reportedly price much less than one penny each and every.

“This tag, which has a gel-like consistency, is actually less expensive and secure, and can be extensively programmed to mimic virtually all ambient-temperature deterioration techniques in meals,” lead researcher Chao Zhang mentioned in a statement.

Whereas most meals and medication have expiration labels, infrequently merchandise are subjected to unanticipated excessive temperatures that might lead to early spoiling. Zhang mentioned the good tags may even take these kinds of variables into account. The shade-coding on the tags would point out the high quality of the meals or medic… [Read more]

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‘Smart tags’ can sense when food or medicine go bad

 
 

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