Food on the QC

A sensor film that can be incorporated into food packaging could alert consumers when a particular perishable product has spoiled. The sensor film developed by the Fraunhofer Research Institution for Modular Solid State Technologies EMFT in Munich responds, with a color change, to the presence of biogenic amines. These compounds are formed as fish and meat decay and help give rise to the unpleasant odor of rotten food, but in a hermetically sealed or vacuum-packed food there is no way to smell whether the food is fresh without opening the package.