VTT has developed a new sensor which monitors ethanol emitted from the spoilage of foods into the headspace of a package. The information given by the sensor is transmitted from the package to the customer by means of a reader, and the data is saved digitally in a remote server. Using the sensor, it will be possible to control the food quality throughout the distribution chain and to prevent waste caused by 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. The freshness data can be stored in real time in the cloud, enabling the comparison of food quality with its previous or later condition. The sensor and the RFID tag can be manufactured into a label or sticker using printing techniques and easily attached to a food package. Thus the price of the sensor will be low enough for use in food packages.
Using the sensor, it will be possible to control the food quality throughout the distribution chain and to prevent waste caused by spoilage. More than 100 tonnes of food products end up in waste annually (estimation 2014) in Europe, and the amount will rise to 126 million tonnes in the year 2020 if nothing changes.
The sensor is developed in the European project SusFoFlex Smart and sustainable food packaging utilizing flexible printed intelligence and materials technologies, EU 7th Framework Programme Agreement No 289829. The invention is currently in the process of being patented.
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