this post was submitted on 19 Feb 2026
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Scientists designed color-changing carbon dot biosensors that can detect spoiled meat in sealed packages in real-time, just in case you don't trust the sniff-test.

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[–] devolution@lemmy.world 35 points 2 weeks ago (3 children)

Won't that affect Walmarts profits? 🙃

[–] Goodlucksil@lemmy.dbzer0.com 16 points 2 weeks ago (2 children)
[–] devolution@lemmy.world 9 points 2 weeks ago

Guy you can't say that! Won't you think of the poor CEO?

[–] Bluegrass_Addict@lemmy.ca 2 points 2 weeks ago (1 children)

options here are 1 corporation that owns a castle and got his balls tickled for decades long price fixing

and walmarts.... there is no good options to shop for food until they are removed from the planet

[–] FauxLiving@lemmy.world 3 points 2 weeks ago (1 children)

until they are removed from the planet

Where can I donate to your campaign?

[–] Bluegrass_Addict@lemmy.ca 2 points 2 weeks ago

they have the rockets 🚀

[–] GR4CELESS@lemmy.zip 9 points 2 weeks ago (9 children)

Pictured is meat with Kirkland branding, which is Costco's in-house brand. Better place to shop than walmart already

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[–] panda_abyss@lemmy.ca 7 points 2 weeks ago (1 children)
[–] cenzorrll@piefed.ca 6 points 2 weeks ago (1 children)

The indicator turns into a "manager's special", no need to pay an employee to slap them on anymore

[–] devolution@lemmy.world 2 points 2 weeks ago

Gross. 🤣

[–] Atlas_@lemmy.world 25 points 2 weeks ago (1 children)

They're going to make this way too sensitive so people throw away even more food and effective prices get driven up. I guarantee it

[–] CovfefeKills@lemmy.world 4 points 2 weeks ago

After they are legally mandated to use it because selling spoiled meat is profitable.

[–] inb4_FoundTheVegan@lemmy.world 17 points 2 weeks ago* (last edited 2 weeks ago)

As a negative control, they also prepared an identical sealed tray containing only a wet sponge and the biosensor, but no meat. They observed that the biosensors in the pork and mutton trays turned bright yellow after 24 hours, while the one in the beef tray took 36 hours. In contrast, the control biosensor showed no detectable change.

That's so cool, meat is still gross, but this is unambiguously a fantastic thing for humanity. If it's actually used, I'd have to imagine the less reliable yet ass covering legal expiration date sticker will always be cheaper. Hope this becomes the new mandated standard, innovations are meaningless in the face of uncaring capitalism.

[–] melfie@lemy.lol 12 points 2 weeks ago (2 children)

I’ve had a number of occasions where I purchased meat and it was spoiled before the expiration date. At this point, I’m sick of putting my trust in big corporations and am trying to buy more foods produced locally.

[–] Cethin@lemmy.zip 3 points 2 weeks ago

No matter where you buy it, expiration dates are only a general guide, and more of a "date of manufacture" note than anything. We evolved to detect potential food that has gone bad. Trust your senses. Look and smell should be enough to know what's actually gone bad (which is usually past the "expiration" date). You can use something like this as a better guide for when food will actually go bad, but, again, trust your senses.

[–] MedicPigBabySaver@lemmy.world 1 points 2 weeks ago (1 children)

Where the hell are you buying meat? A friggin' flea market? BS.

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[–] Damage@feddit.it 7 points 2 weeks ago (1 children)

I've got a fairly reliable tool that does the same, I keep it in the middle of my face

[–] ebolapie@lemmy.world 12 points 1 week ago (1 children)

Anosmia is more common than you might think. A lot of stuff that seems silly on the face of it is hella useful for people with disabilities.

[–] isVeryLoud@lemmy.ca 6 points 1 week ago (1 children)

Noses do seem silly on the face of anosmics.

[–] ebolapie@lemmy.world 5 points 1 week ago (1 children)

I really walked into that one huh

[–] isVeryLoud@lemmy.ca 5 points 1 week ago

Sure smells like it!

[–] Corkyskog@sh.itjust.works 3 points 1 week ago

Average Americans will never see this. This comes at a time when regulations are being removed and meat packers are shooting up beef with red die to make it not look bad and rotten fish is being treated with CO and dies to be sold as fresh fish...

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