Sol-gel based 'artificial' biofilm from Pseudomonas fluorescens using bovine heart cytochrome c as electron mediator

Abstract Bovine heart cytochrome c can serve as electron mediator between Pseudomonas fluorescens bacteria immobilized in a sol–gel film and a glassy carbon electrode surface. Such system illustrates the concept of ‘artificial’ biofilm in which strategies suggested in natural biofilms to transfer electrons are mimicked.