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Updated: Sep 4, 2025

Fluorescence detection methods for microfluidic droplet platforms

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Published on: December 10, 2011

Challenges Encountered in the Implementation of Bio-Fluorescent Particle Counting Systems as a Routine Microbial

Allison Scott¹, Ans Vanbroekhoven², Cedric Joossen³

¹PEMM/Azbil North America Research and Development: BioVigilant, 2005 W. Ruthrauff Rd. #151, Tucson, AZ 85705.

PDA Journal of Pharmaceutical Science and Technology

|July 15, 2022

Summary

Continuous bio-fluorescent particle counting offers a new paradigm for microbial detection, providing real-time data instead of periodic counts. This rapid microbiological method uses autofluorescence units, presenting unique implementation challenges discussed by industry experts.

Keywords:

Autofluorescence unit (AFU)Bio-fluorescent particle counting (BFPC)Environmental monitoring (EM)Modern microbiological method process analytical technology (PAT)Rapid microbiological method (RMM)Water monitoring

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Area of Science:

Microbiology
Analytical Chemistry
Biotechnology

Background:

Traditional microbial detection relies on growth-based methods, yielding periodic results.
Continuous bio-fluorescent particle counting (BFPC) offers a rapid alternative for real-time bioburden assessment.
BFPC technology detects intrinsic microbial cell fluorescence, reporting in autofluorescence units.

Purpose of the Study:

To highlight the paradigm shift from traditional to continuous microbial detection methods.
To discuss the challenges associated with implementing BFPC technology.
To present industry perspectives on navigating these implementation challenges.

Main Methods:

Utilizes bio-fluorescent particle counting technology for microbial enumeration.
Detects intrinsic fluorescence of microbial cells in air or water samples.
Employs autofluorescence units, independent of microbial growth.

Main Results:

BFPC provides a continuous data stream, unlike periodic traditional methods.
Autofluorescence units offer a non-growth-dependent measure of bioburden.
Implementation challenges exist due to the non-equivalent nature of results.

Conclusions:

The transition to BFPC represents a significant methodological shift in microbial detection.
Addressing implementation challenges is crucial for adopting this advanced technology.
Industry collaboration is key to successfully navigating the integration of BFPC.