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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 hankwang on Thursday August 06 2015, @05:54PM
"Pretty much, milk can't actually go bad."
There was a time that I didn't drink much milk and that I took an unopened carton of pasteurized milk out of the fridge that was 'best before' next week. But the date was only day-month, without year. To this day I don't know whether it was 1 or 2 years old. :-)
Out of curiosity, I did open it. It looked mostly like yogurt with some transparent liquid layer on top. Never tasted it though.
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