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Food containers that change colour may soon make 'sell-by' date obsolete

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Even in 2017, we often decide whether the salmon in our refrigerator is still edible by giving it a sniff and looking at the "sell-by" date.

Washington

EVEN in 2017, we often decide whether the salmon in our refrigerator is still edible by giving it a sniff and looking at the "sell-by" date.

A company called Braskem wants to bring a little more science into the decision.

It has developed a way to make plastic

sentifi.com

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