VTT sensor detects spoilage of food

VTT has developed a sensor that detects ethanol in the headspace of a food package. Ethanol is formed as a result of food spoilage. The sensor layer is part of a radio-frequency identification (RFID) tag, and the sensor data can be read wirelessly using an RFID reader in, for example, a smartphone. The sensor transmits information about the freshness of the food in the package to the retailer or customer.
Using printing techniques the sensor and the RFID tag can be manufactured into a label or sticker and easily attached to a food package. The price of the sensor will be low enough for use in food packages. The sensor is developed in the European project SusFoFlex (News Item VTT, 6 May 2015).
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