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Paper-based fluorescence sensor array with functionalized carbon quantum dots for bacterial discrimination using a

Fangbin Wang1, Minghui Xiao1, Jing Qi2

  • 1School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China.

Analytical and Bioanalytical Chemistry
|April 17, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel paper-based sensor array using antibiotic-modified carbon quantum dots for rapid bacterial identification. The platform offers cost-effective, on-site bacterial detection with high accuracy.

Keywords:
Bacterial discriminationCQDsMachine learningSensor array

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Area of Science:

  • Nanotechnology
  • Biotechnology
  • Analytical Chemistry

Background:

  • Traditional bacterial detection methods are time-consuming and require specialized equipment.
  • Rapid bacterial identification is crucial for food safety, medical diagnostics, and environmental monitoring.
  • Existing methods often lack portability and cost-effectiveness for widespread application.

Purpose of the Study:

  • To develop a low-cost, portable, and rapid paper-based fluorescence sensor array for bacterial discrimination.
  • To utilize antibiotic-modified carbon quantum dots (CQDs) as sensing units for bacterial identification.
  • To integrate machine learning algorithms for accurate bacterial type discrimination.

Main Methods:

  • Fabrication of a paper-based sensor array using inkjet-printed fluorescent ink composed of three distinct antibiotic-modified CQDs.
  • Exploitation of aggregation-induced fluorescence quenching upon CQD interaction with bacterial surfaces.
  • Utilizing a smartphone for data acquisition and employing machine learning algorithms for bacterial discrimination.

Main Results:

  • The sensor array successfully differentiated among five bacterial strains with high accuracy.
  • Detection range achieved was from 1.0 x 10^3 CFU/mL to 1.0 x 10^7 CFU/mL.
  • The platform demonstrated practical utility through accurate identification of blind bacterial samples.

Conclusions:

  • The developed paper-based fluorescence sensor array offers a cost-effective and integrated solution for on-site bacterial detection.
  • The platform's ease of fabrication and high sensitivity make it promising for diverse applications in food safety, medical, and environmental fields.
  • This innovative approach significantly advances rapid bacterial identification technologies.