Amperometric Biosensor for Pathogenic Bacteria Detection

Abstract

Biosensor technology has the potential to speed the detection of food pathogen and to increase specificity and sensitivity of the analysis. Electrochemical biosensors have some advantages over other analytical transducing systems, such as the possibility to operate in turbid media, comparable instrumental sensitivity, and possibility of miniaturisation. Basically electrochemical biosensor can be based on potentiometric, amperometric or impedimetric/conductimetric transducers. In this chapter, amperometric transducers will be described in detail. In particular amperometric biosensors for food pathogen will be reviewed as microbial metabolism-based, antibody-based (immunosensor), and DNA-based biosensor.