Smart Packaging: Intelligent film changes colour to indicate spoiled food

The Fraunhofer Institute has developed a cost-effective colour-changing intelligent sensor film that can be integrated into meat or fish packaging to indicate if the food has spoiled.

The technology is much less expensive than alternatives such as electronic sensors and cost effective enough to allow broad take up, it claimed.

Experts from the Germany-based institute said the sensor film responds to biogenic amines produced by foods. These are molecules emitted principally by meat and fish when they decay and are responsible for the unpleasant smell given off by rotting foods, explained scientists from the body.

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