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Nano ink indicates safety breach in food packaging

14/11/2006 – A new ink leverages nanotechnology to detect the presence of oxygen in food packages, giving a warning that the product is no longer safe to eat.

The ink can be used by processors as another way of assuring wary consumers that their products are protected against faulty packaging and tampering. Once oxygen enters a food package, either accidentally or by tampering, the ink changes colour, warning the consumer that the food is no longer safe to eat.
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