Paper-based PCR method development, validation and application for microbial detection

Area of Science:

• Food Safety and Microbiology
• Molecular Diagnostics
• Biosensor Technology

Background:

• Food quality analysis is crucial for preventing foodborne illnesses from pathogens.
• Current pathogen detection methods are often time-consuming and labor-intensive.
• Rapid identification of contaminants is essential for ensuring food safety.

Purpose of the Study:

• To develop a specific and rapid method for detecting contaminants in milk.
• To create a user-friendly, paper-based diagnostic tool for food safety applications.

Main Methods:

• Developed a paper-based polymerase chain reaction (PCR) method utilizing Whatman paper no. 1 as a sample carrier.
• Employed 16S rDNA universal primers for bacterial detection, LacZ primers for coliforms, and ITS region primers for fungal detection.
• Minimized sample preparation steps for increased efficiency and ease of use.

Main Results:

• Successfully developed and validated a paper-based PCR method for microbial and coliform detection in milk.
• The method demonstrated high specificity and accuracy, comparable to traditional microbial detection techniques.
• Achieved significant time reduction, with results available in 2-3 hours compared to 18-20 hours for traditional methods.

Conclusions:

• The paper-based PCR method is a suitable and effective tool for detecting contaminant microbes in various milk samples.
• This rapid detection system offers a promising alternative to conventional methods, especially in time-sensitive testing scenarios.
• The developed technology enhances food safety by providing quick and reliable contaminant identification.