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German Researchers Develop Infrared Scanner That Senses Food Freshness

February 7, 2019: 12:00 AM EST
Fraunhofer researchers in Germany have developed a mobile food scanner that will allow consumers and supermarket operators to test whether food items have gone bad. The pocket-size device uses infrared measurements to determine the ripeness and shelf life of produce and display the results via an app. The scanner, still in the testing stages, contains data for only two foods so far and permits the shelf life of products to be estimated. The core of the mobile scanner is a near-infrared (NIR) sensor that measures the ripeness of the food and identifies the amount and composition of its contents. Infrared light is beamed with high precision at the food and the scanner measures the spectrum of the reflected light. The absorbed wavelengths permit inferences to be made about the chemical composition of the food.[Image Credit: © Fraunhofer-Gesellschaft]
"Pocket-size food scanner to battle food waste", Fresh Plaza, February 07, 2019, © FreshPlaza.com
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