Microbiological tests currently available for the food industry provide results too late to prevent product recalls and to guarantee consumer safety. The absence of a fast, reliable test for bacterial detection (E.coli, Listeria, Salmonella, etc.) is a serious issue for the fresh food industry (fruits and vegetables, dairy products, fresh meat and fish, etc.). The results of the standard testing systems (HPC) are available after a number of days. “Express” tests may require from 18 to 32 hours. During this time, food products will have been released from the processing facilities and will be available on supermarket shelves, or will have already been consumed by customers.