Modeling and application of tin oxide sensors for detection of different pathogens

Abstract

The development of biosensors has an important attention over the last two decades. Detection of foodborne pathogens is very important for the food safety and public health.We can define a bio-sensor is an analytical device which can convert the responses from biological activities in the living system to an electrical signal or process able data. In this context, monitoring is the major control to the avoidance of diseases caused by foodborne pathogens. In last decades several methods for detection and monitoring of pathogens have been developed [1]. One of the methods using for the detection of pathogen system is impedance spectroscopy, and it is generally called as impedance microbiology [2]. The first attempt by Stewart et al; was the first to detect a microorganism using impedance technique and afterwards several studies were published explaining impedance detection of microorganism and various pathogens. The impedance and other electrical parameters can be changed because the pathogen medium produces ionic metabolites to the medium during their energy metabolism process in the living cells or microbial growth of pathogens [3].