A Microbial Fuel Cell Type Lactate Biosensor Using a Metal-Reducing Bacterium, Shewanella putrefaciens

Abstract

A fuel cell type biosensor for lactate was developed using a metal-reducing bacterium, Shewanella putrefaciens IR-1. Under the operational conditions, the bacterial cell suspension generated the current without an electrochemical mediator in the presence of lactate. The current was proportional to the lactate concentration up to 30 mM.