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Thread #243437
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Researchers from RMIT University have developed a new artificial enzyme that uses light to kill bacteria.
The artificial enzymes could one day be used in the fight against infections, and to keep high-risk public spaces like hospitals free of bacteria like E. coli and Golden Staph.

E. coli can cause dysentery and gastroenteritis, while Golden Staph is the major cause of hospital-acquired secondary infections and chronic wound infections.
Made from tiny nanorods - 1000 times smaller than the thickness of the human hair - the "NanoZymes" use visible light to create highly reactive oxygen species that rapidly break down and kill bacteria.

Lead researcher, Professor Vipul Bansal who is an Australian Future Fellow and Director of RMIT's Sir Ian Potter NanoBioSensing Facility, said the new NanoZymes offer a major cutting edge over nature's ability to kill bacteria.

"For a number of years we have been attempting to develop artificial enzymes that can fight bacteria, while also offering opportunities to control bacterial infections using external 'triggers' and 'stimuli'," Bansal said. "Now we have finally cracked it.

"Our NanoZymes are artificial enzymes that combine light with moisture to cause a biochemical reaction that produces OH radicals and breaks down bacteria. Nature's antibacterial activity does not respond to external triggers such as light.

"We have shown that when shined upon with a flash of white light, the activity of our NanoZymes increases by over 20 times, forming holes in bacterial cells and killing them efficiently.


https://phys.org/news/2018-04-nanozymes-bacteria.html#jCp
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"This next generation of nanomaterials are likely to offer new opportunities in bacteria free surfaces and controlling spread of infections in public hospitals."
The NanoZymes work in a solution that mimics the fluid in a wound. This solution could be sprayed onto surfaces.

The NanoZymes are also produced as powders to mix with paints, ceramics and other consumer products. This could mean bacteria-free walls and surfaces in hospitals.

Public toilets—places with high levels of bacteria, and in particular E. coli—are also a prime location for the NanoZymes, and the researchers believe their new technology may even have the potential to create self-cleaning toilet bowls.

While the NanoZymes currently use visible light from torches or similar light sources, in the future they could be activated by sunlight.

The researchers have shown that the NanoZymes work in a lab environment. The team is now evaluating the long-term performance of the NanoZymes in consumer products.

"The next step will be to validate the bacteria killing and wound healing ability of these NanoZymes outside of the lab," Bansal said.
"This NanoZyme technology has huge potential, and we are seeking interest from appropriate industries for joint product development."
The NanoZyme breakthrough has recently been published in the journal ACS Applied Nano Materials.
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>Antibiotics are on their way to 0% effectiveness due to overuse.
>New technology that bacteria has no defense against

Hell ye-

>Proposing to put this technology in literally every possible surface including paint on the walls.

How can people be so smart but so fucking retarded at the same time?
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>>243439
If I invented something I'd want everyone to use it, too, so I could get money.
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>>243439
Iirc, bacteria already reconfigure their proteins to resist oxidative stress. Also, making a hole isn’t good enough. If only the cell wall is ruptured and most of the insides stay intact, the bacteria will survive and repair itself.
Then again, this was awhile back. Maybe they’ve really actually figured it out now.
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>>243447
Here is the paper
Visible-Light-Triggered Reactive-Oxygen-Species-Mediated Antibacterial Activity of Peroxidase-Mimic CuO Nanorods

https://pubs.acs.org/doi/10.1021/acsanm.8b00153
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>>243453
Neat, seems like OH production is so rapid that it overwhelms the ability to fight back. Roughly 92% effectiveness ain’t too bad.
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>>243459
Unless I'm missing something, 92% effectiveness means that the next generation of bacteria will be descended from the 8% of OH-resistant bacteria.
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>>243472
You aren’t missing anything, I’m just pleasantly surprised it’s better than the study I had read previously.
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>>243437
>8 replies
>Stormy Daniels polygraph results
>210 replies
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>>243513
it's almost like when something isn't politically controversial you don't get hundreds of replies
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>>243513
It’s an article about tech that might hopefully be useful someday. Most people don’t really care about something that can’t be used, argued, or shitposted about.
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>>243513
If that is surprising for you, I have some bad news...
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>>243472
what youre missing is the fact that bacterium dont just lay on a surface 1 thick, carpet style, they have volume just like any other matter.
some spots have more biofilm than others. just look at your teeth. bacterial activity can be gaged by the amount of plaque on your teeth, and where there is a large amount of plaque, high numbers of bacteria are thriving.

however, i think we should reconsider the use of solarpowered ozone generating surfaces. just like the hydrophobic surface memes that "prevent subway pissers"

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