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Consumers may soon be able to go for longer between milk-buying trips. That's because Brazilian company Agrindus hopes to start marketing plastic milk bottles that use embedded silver nanoparticles to kill bacteria. Grade A pasteurized fresh whole milk packaged in those bottles can reportedly last for up to 15 days, as opposed to the usual seven.
The technology was developed by partner company Nanox, and involves first coating silica ceramic particles with silver nanoparticles. This reportedly has a synergistic effect, with the silica boosting the antimicrobial properties of the silver.
Those coated particles take the form of a powder that is subsequently mixed into liquid polyethylene. Using blow- or injection-molding, that plastic is then made into bottles which Agrindus plans to sell to dairy goods companies. The particles can also be used to make milk bags, which should extend shelf life from four to 10 days.
(Score: 2) by hendrikboom on Thursday August 06 2015, @03:22PM
I used to get nonraw milk here in Quebec, in glass bottles. It was pasteurized but not homogenized. It's the homogenisation that prevents the cream from separating. SO the cream was on top, and it tasted good.
When the industry switched to cartons instead of bottles, apparently to eliminate the trouble of collecting and cleaning the bottles for reuse, we ended up with the uniform stuff you describe.
Except we still don't have bovine growth hormones in our milk. Such things are banned in Quebec. Milk here is relatively pure.