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Abstract
Foodborne safety has aroused tremendous research interest in recent years because of a global public health problem. The rapid and precise detection of foodborne pathogens can reduce significantly infection diseases and save lives by the early initiation of an effective treatment. This review highlights current advances in the development of biosensors for detection of Campylobacter spp. and Listeria monocytogenes that are the most common causes of zoonosis. The consumption of pathogen contaminated food is responsible for humans hospitalization and death. The attention focused on the recognition elements such as antibodies (Ab), DNA probes and aptamers able to recognize cells, amplicons, and specific genes from different samples like bacteria, food, environment and clinical samples. Moreover, the review focused on two main signal-transducing mechanisms, i.e., electrochemical, measuring an amperometric, potentiometric and impedimetric signal; and optical, measuring a light signal by OLED (Organic Light Emitting Diode), SPR (Surface Plasmon Resonance), and Optical fiber. We expect that high-performance of devices being developed through basic research will find extensive applications in environmental monitoring, biomedical diagnostics, and food safety.
Highlights
Bacterial contamination of food is a central issue of food safety because of the high incidence of foodborne diseases [1,2]
The majority of infections is caused by 15 pathogenic bacteria including Salmonella, Campylobacter, Listeria and Shiga toxin producing Escherichia coli (STEC)
Used tests cannot be performed on the point-of-need but samples have to be collected and transported in specialized laboratories, practice that contributes to underestimate the number of foodborne infections, and to their inefficient monitoring and control
Summary
Bacterial contamination of food is a central issue of food safety because of the high incidence of foodborne diseases [1,2]. Identification and quantification of bacteria mostly rely on conventional, culture-based methods, and bacterial phenotypical characterization Such traditional methods for pathogen detection are inadequate to be performed in closed, confined spaces, as production plants. Biosensors offer the specificity and sensitivity of biological systems integrated into small, low-cost devices Thanks to their high analytical performance, biosensors represent a powerful alternative to conventional methods in pathogen detection. We present major recent advances in the development of electrochemical and optical biosensors to detect Campylobacter spp. and Listeria monocytogenes, foodborne pathogens that represent an important global health threat. To reduce incidence of human infections by Campylobacter spp. and Listeria, it is important to find specific, sensitive and suitable analysis methods to deal with the current detection problems of both pathogens. Detection of Campylobacter spp. and Listeria monocytogenes by Electrochemical Biosensors
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