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Silver-Laced Bottles Prolong Shelf Life of Milk

posted by janrinok on Thursday August 06 2015, @06:13AM   Printer-friendly
from the for-your-golden-cereals dept.

Phoenix666 writes:

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.

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  • (Score: 2) by penguinoid on Thursday August 06 2015, @11:31AM

    by penguinoid (5331) on Thursday August 06 2015, @11:31AM (#219039)

    Almost all metals can accumulate and cause poisoning, and this includes metals like iron and copper that you need to live. Even more generally, anything that doesn't dissolve in water won't be passing through your kidneys.

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  • (Score: 2) by sjames on Thursday August 06 2015, @05:06PM

    by sjames (2882) on Thursday August 06 2015, @05:06PM (#219158) Journal

    That's not quite the case. Once the silver is in nanoparticle form, it will be able to travel everywhere in your body including crossing the blood-brain barrier and through your kidneys.

    • (Score: 2) by Freeman on Thursday August 06 2015, @06:42PM

      by Freeman (732) on Thursday August 06 2015, @06:42PM (#219200) Journal

      The most common version of Heavy Metal Poisoning is probably Lead Poisoning which does have adverse effects on the human body. From Wikipedia "Chronic ingestion or inhalation of silver preparations (especially colloidal silver) can lead to argyria in the skin and other organs. This is not life-threatening, but is considered by most as cosmetically undesirable." https://en.wikipedia.org/wiki/Argyria/ [wikipedia.org] Interesting wikipedia article on "Colloidal Gold." https://en.wikipedia.org/wiki/Colloidal_gold/ [wikipedia.org] You really have to ingest a Lot of Silver / Gold to start to experience side effects. I also wouldn't start quoting the TV Series House on the subject . . .

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