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Updated: Jun 14, 2025

Development of an Electrochemical DNA Biosensor to Detect a Foodborne Pathogen

Development of an Electrochemical DNA Biosensor to Detect a Foodborne Pathogen

Published on: June 3, 2018

Direct or DNA Extraction-Free Amplification and Quantification of Foodborne Pathogens.

Maggie R Williams¹, Arife Ezgi Telli², Nihat Telli³

¹School of Engineering & Technology, Institute for Great Lakes Research, Central Michigan University, Mt Pleasant, MI, USA.

Methods in Molecular Biology (Clifton, N.J.)

|September 5, 2024

Summary

Direct nucleic acid amplification offers faster foodborne pathogen detection than traditional methods. Protocols for loop-mediated isothermal amplification (LAMP) and polymerase chain reaction (PCR) enable direct pathogen detection in food samples.

Keywords:

Direct amplification Direct loop-mediated isothermal amplification Direct polymerase chain reaction Foodborne pathogens

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Area of Science:

Food safety
Microbiology
Molecular biology

Background:

Traditional methods for foodborne pathogen detection, such as DNA extraction and culture-based approaches, are time-consuming.
Faster detection methods are crucial for effective food safety management and public health protection.

Purpose of the Study:

To develop and describe protocols for direct nucleic acid amplification of foodborne pathogens from food matrices.
To demonstrate the application of these methods for detecting specific pathogens in common food samples.

Main Methods:

Development of assay design protocols for direct amplification using loop-mediated isothermal amplification (LAMP) and polymerase chain reaction (PCR).
Experimental validation using Escherichia coli in milk and Salmonella in pork meat samples.
Detailed methods cover target sequence acquisition, assay design, sample processing, and amplification.

Main Results:

Successful direct amplification and detection of target pathogens without prior DNA extraction.
Established protocols applicable to various food matrices and pathogens.
Demonstrated reduced time to results compared to conventional methods.

Conclusions:

Direct nucleic acid amplification techniques, including LAMP and PCR, provide a rapid and effective alternative for foodborne pathogen detection.
The described protocols are adaptable for a wide range of food safety applications.
These advancements can significantly improve the efficiency of food safety testing and response.