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Updated: Aug 5, 2026

Development of an Electrochemical DNA Biosensor to Detect a Foodborne Pathogen
Published on: June 3, 2018
Advances in Detecting Viable/Dead Foodborne Microorganisms Using Diverse Functional Nucleic Acid-Based Molecular
Yanger Liu1, Huifu Yuan2, Juan Zhang1
1State Key Laboratory for Quality and Safety of Agro-Products, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Functional nucleic acids (FNAs) offer a sensitive and specific method for detecting viable foodborne pathogens. This approach overcomes limitations of traditional methods, enabling rapid and precise field detection for improved food safety.
Area of Science:
- Food safety
- Microbiology
- Biotechnology
Background:
- Traditional methods for detecting foodborne pathogens are slow and inaccurate.
- Current molecular techniques struggle to differentiate between viable and dead bacteria.
- There is a need for rapid, precise, and field-deployable detection methods.
Purpose of the Study:
- To review molecular recognition strategies and functional nucleic acid (FNA) technologies for viable foodborne pathogen detection.
- To categorize biomarkers targeted by FNAs.
- To discuss applications, challenges, and future directions in FNA-based food safety.
Main Methods:
- Systematic review of FNA-based detection technologies.
- Categorization of biomarkers (nucleic acids, surface structures, metabolic activities).
- Examination of FNA principles and technological evolution (primers, aptamers, DNAzymes, etc.).
Main Results:
- FNAs provide high sensitivity, specificity, and target diversity for viability detection.
- FNAs can be integrated into various detection platforms.
- Biomarkers include nucleic acids, surface structures, and metabolic activities.
Conclusions:
- FNA-based technologies are a promising alternative for rapid and precise detection of viable foodborne pathogens.
- These methods can enhance food safety risk assessments and public health interventions.
- Further research is needed to address remaining challenges and optimize field applications.
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