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|Nanoparticles (07/10/17 22:30:32)||Reply|
Well, a red blood cell is about 6000 nm in diameter. A thrombocyte is about 1000 nm in diameter. A bacterium - Eschericia coli is about 1000 x 1000 x 2000 nm
Anyone using caramel (sugar colour) for their sauces? That's carbon nanoparticles
"We report the finding of the presence of carbon nanoparticles (CNPs) in different carbohydrate based food caramels, viz. bread, jaggery, sugar caramel, corn flakes and biscuits, where the preparation involves heating of the starting material. The CNPs were amorphous in nature; the particles were spherical having sizes in the range of 4–30 nm, depending upon the source of extraction. The results also indicated that particles formed at higher temperature were smaller than those formed at lower temperature. Excitation tuneable photoluminescence was observed for all the samples with quantum yield (QY) 1.2, 0.55 and 0.63%, for CNPs from bread, jaggery and sugar caramels respectively. The present discovery suggests potential usefulness of CNPs for various biological applications, as the sources of extraction are regular food items, some of which have been consumed by humans for centuries, and thus they can be considered as safe."
as a beginning.
Then we can go further, but not today.
|Re: Nanoparticles (15/10/17 15:10:43)||Reply|
Those afraid of carbon nanoparticles had better stick to vodka or vodka lookalikes.
|Re: Nanoparticles (15/10/17 15:17:11)||Reply|
It's like with the caramel. If you roast your flour too long on the frying pan, it all converts into coke, and it will be quite a chore to remove it from the pan. It's doable with my old cast-iron pans. I don't think modern PTFE-covered surfaces will endure the heat. And it is better to be outside if those PTFE layers start to decompose above 350 degrees Celcius.
|Stabilisers (23/10/17 18:13:17)||Reply|
Schrödinger's nanoparticle: Is it coated, or isn't it?
|something else - ebony (03/11/17 20:14:18)||Reply|
"Ebony, when ground into fine dust (for example, during sawing), results in a flammable and toxic powder which can float about in air for several days. Due to the high toxicity of ebony in powdered form, its use in construction work requires government certification in several South Asian countries."
Somebody please tell me that if the bloody thing is heavy enough to sink in water, how its dust can float in the air for days?
|Re: something else - ebony (04/11/17 20:34:34)||Reply|
I don't know about ebony - but there are some interesting experiments related to kitchen hygiene.
If you use a wooden carving board
for your food salmonella-contaminated chicken, then bacteria live shorter on the board than if you use a polythene board. And, I'd think it is likely that wood in general, but specially tropical wood, contain strong chemicals to fend off bacteria and pests. So it would not surprise me if they are toxic to humans. Actually wood dust toxicity is a problem not only with ebony.
This seems like an example of the general principle that plants defend themselves with chemicals. Not all of those are poisons to humans, but some are.
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