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Updated: May 1, 2026
14:16
Fluorescence detection methods for microfluidic droplet platforms
Published on: December 10, 2011
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Fluorescence-based method and a device for rapid detection of microbial contamination
Chandrasekhar Gurramkonda1, Karunasri Mupparapu, Rima Abouzeid
1Center for Advanced Sensor Technology and Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD.
PDA Journal of Pharmaceutical Science and Technology
|March 27, 2014
Summary
A new rapid, sensitive method for microbial detection uses resazurin reduction to identify viable cells in just 180 seconds. This user-friendly, low-cost approach is suitable for field use, offering quick microbial contamination insights.
Area of Science:
- Microbiology
- Analytical Chemistry
- Biotechnology
Background:
- Microbial contamination detection requires simple, user-friendly, and cost-effective methods.
- Field-deployable solutions for microbial analysis are highly desirable for various applications.
Purpose of the Study:
- To present a novel, rapid method for microbial detection.
- To introduce a portable device for on-site microbial analysis.
Main Methods:
- Utilizes the biochemical reduction of resazurin to resorufin as a marker for viable microbial cells.
- Employs a portable device designed for ease of use in diverse settings.
Main Results:
- Achieves a high sensitivity with a limit of detection as low as 1 colony-forming unit per milliliter (CFU/mL).
- Provides rapid results, with detection times as short as 180 seconds.
Conclusions:
- The described method offers a fast, sensitive, and user-friendly approach to microbial detection.
- The portable device facilitates real-time, in-field microbial analysis, addressing a critical need for accessible diagnostics.
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