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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[–] Damage@feddit.it 2 points 2 hours ago

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

[–] Atlas_@lemmy.world 16 points 12 hours 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 2 points 4 hours ago

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

[–] cv_octavio@piefed.ca 61 points 20 hours ago (1 children)

Cool cool.

leans forward

Now, can it also not persist in the environment for 1000 years after the thing it was packaging has been unpackaged?

[–] FauxLiving@lemmy.world 42 points 16 hours ago (2 children)
[–] Abrinoxus@thelemmy.club 3 points 7 hours ago

haha thats the new fresh thoughtterminating sequence i love it

[–] cv_octavio@piefed.ca 8 points 15 hours ago (1 children)

But what does the scouter say about his power level, Vegeta?

leans forwarder

Huh Vegeta?! What's it say!?

[–] FauxLiving@lemmy.world 1 points 3 hours ago

Someone AI a gif of this STAT

[–] melfie@lemy.lol 11 points 18 hours 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.

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

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

[–] melfie@lemy.lol 1 points 2 hours ago

I was buying it at Kroger, but got tired of meat being expired the first day I got it home, long before the expiration date. Now I buy from a rancher down the road. Re-reading my comment, it may have been unclear that I’m buying local to get better quality than I can get from big corporations.

[–] Cethin@lemmy.zip 3 points 4 hours 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.

[–] devolution@lemmy.world 34 points 22 hours ago (3 children)

Won't that affect Walmarts profits? 🙃

[–] GR4CELESS@lemmy.zip 8 points 17 hours ago (1 children)

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

[–] devolution@lemmy.world 0 points 17 hours ago (2 children)

3 Ribeyes are currently $67 there. You cracked out? Lol

[–] criticon@lemmy.ca 11 points 17 hours ago

Looking at my nearest Costco vs Walmart prices

Ribeye choice:

Costco $15.99 / lb

Walmart $23.47 / lb

Ribeye prime

Costco $20.99 / lb

Walmart $27.98 / lb

[–] devolution@lemmy.world 2 points 16 hours ago (1 children)

I was just at Costco yesterday. Then again different prices in different states?

[–] 3abas@lemmy.world 3 points 13 hours ago

Costco slices their ribeyes thick. 3 at ~1 pound each is right around that prime price.

[–] Goodlucksil@lemmy.dbzer0.com 14 points 21 hours ago (2 children)
[–] devolution@lemmy.world 8 points 21 hours ago

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

[–] Bluegrass_Addict@lemmy.ca 2 points 19 hours 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 16 hours ago (1 children)

until they are removed from the planet

Where can I donate to your campaign?

[–] Bluegrass_Addict@lemmy.ca 2 points 12 hours ago

they have the rockets 🚀

[–] panda_abyss@lemmy.ca 6 points 20 hours ago (1 children)
[–] cenzorrll@piefed.ca 5 points 18 hours 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 1 points 18 hours ago

Gross. 🤣

[–] inb4_FoundTheVegan@lemmy.world 15 points 21 hours ago* (last edited 21 hours 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.

[–] Auster@thebrainbin.org -5 points 22 hours ago (4 children)

If people don't trust it either, there's also an alternative, reading the package for the expected spoiling date.

[–] village604@adultswim.fan 29 points 22 hours ago (1 children)

That date means nothing. It's a best by date, not an expiration date. It's just the last date you can get a refund if it goes bad.

But I've had a gallon of milk last a whole month after the best by date.

[–] RamRabbit@lemmy.world 12 points 22 hours ago* (last edited 22 hours ago) (1 children)

Yeah, the date on the package means even less if you freeze it. Frozen meat is good for years.

(Freeze your ground beef, freeze your bread. Throwing away food is expensive!)

[–] CallMeAl@piefed.zip 6 points 21 hours ago (2 children)

Yes, and freeze sauces, soups, and stews in ice cube trays and then into freezer bags for easy portioning later. This was life changing advice for me.

[–] RebekahWSD@lemmy.world 1 points 12 hours ago (1 children)

This is why I can! I don't have enough freezer space!

[–] CallMeAl@piefed.zip 2 points 7 hours ago (1 children)

I live in an apartment with a very small fridge that has a tiny freezer inside it. I got a small chest freezer that I use for storage. I only use the one in my fridge for freezing stuff, then it moves to the chest freezer.

Do you do meal planning and if so do your plans include your frozen stuff?

[–] RebekahWSD@lemmy.world 1 points 2 hours ago

When I have energy I sometimes make ravioli or lasagna and freeze it! But it requires energy and freezer space.

[–] rainwall@piefed.social 3 points 19 hours ago* (last edited 19 hours ago)

We use these for soup:

https://www.soupercubes.com/products/silicone-food-freezer-trays?variant=45179217969378

Pricey for glorified ice cube trays, but really convinent to have the soup portioned to size.

[–] tiramichu@sh.itjust.works 9 points 22 hours ago* (last edited 22 hours ago)

The expiry date has been a necessary and useful tool, but these dots seem like they could be a good idea if they can actually sense when spoilage happens.

Meat could have been exposed to bad conditions that makes it spoil before the expected date.

But maybe even bigger is that the date is always going to be very much on the side of caution, so it might avoid waste where people tend to bin stuff as soon as the expiry hits, even though that food may still be perfectly good.

[–] EncryptKeeper@lemmy.world 4 points 21 hours ago

I’ve had Milk that lasts a week longer than the expiration date, and I’ve had meat spoil a week before its use-or-freeze-by date

[–] kn33@lemmy.world 1 points 20 hours ago

I've had stuff spoil early, or last long past the date. Having a visual chemical indicator would be great.