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Tiny Labels Change Color When Food Begins To Spoil [Video]

Tiny Labels Change Color When Food Begins To Spoil [Video]
Design

Chinese researchers have developed a small tag that can indicate how fresh a perishable product is.

Emma Hutchings
  • 19 march 2014

At the National Meeting & Exposition of the American Chemical Society, a report was presented on color-changing smart tags that indicate to consumers when food has spoiled. The jelly-like squares, developed by Chinese researchers, can be programmed for different products.

jelly-square-colors.jpg

One application could be informing people that their carton of milk has turned sour without them needing to open the container. The tags stick straight onto the packaging, and are color-coded to indicate the food’s freshness.

Made of silver and gold nanorods and other chemicals (including chloride and vitamin C), the small tags could also be used to determine whether medications and other perishable products are still fresh. Check out the video below to learn more about the smart tags:

American Chemical Society

Sources: Business Insider

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