Machine vision-integrated portable colorimetric biosensing platform with triple-layered (Pt@ZIF-8)(3)@PDA nanozymes for multiplexed ultrasensitive detection of pathogenic bacteria

The Quick Summary

This study developed a new device to quickly find many different kinds of bad germs in food. It uses tiny helpers called nanozymes that change color when they find these germs. A special camera helps read the color changes, making it easy to see if food is safe.

Practical Implications

This research offers a practical way to rapidly test food products on-site for contamination by pathogenic bacteria. Such a system could significantly improve food safety by enabling quick identification of contaminated batches before they reach consumers, thus preventing foodborne disease outbreaks.

Potential Use in Indonesia

In Indonesia, this portable biosensing platform could be transformative for ensuring food safety, especially in traditional markets and among street food vendors where laboratory access is limited. Its rapid detection capability would allow on-the-spot checks for pathogenic bacteria in vulnerable foods, which is crucial given the tropical climate that favors microbial growth. This could help reduce foodborne illnesses and build consumer trust in local food supply chains without requiring expensive, centralized testing facilities.

Original Abstract

Simple and in-field detection of multiple pathogenic bacteria is urgently needed. In this work, a biosensor using a nanozyme-based colorimetric immunoassay was developed for sensitive detection of multiple pathogenic bacteria. Firstly, a nanocomposite (Pt@ZIF-8)³@PDA-Ab was synthesized based on nanozyme coated with multiple layers of metal-organic frameworks to recognize and probe target bacteria. Additionally, leveraging the catalytic properties of Pt nanoparticles with different substrates……

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