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Updated: Jul 3, 2026
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Concurrent Quantification of Cellular and Extracellular Components of Biofilms
Published on: December 10, 2013
Quantitative analysis of biofilm thickness variability
1Department of Civil Engineering, Center for Biofilm Engineering, Montana State University, Bozeman, Montana 59717, USA.
Biotechnology and Bioengineering
|March 20, 1995
Summary
This study quantifies biofilm thickness variability for Pseudomonas aeruginosa and Klebsiella pneumoniae. Results show distinct structural differences and thickness variations between single-species and mixed biofilms.
Area of Science:
- Microbiology
- Biophysics
- Materials Science
Background:
- Biofilms exhibit complex three-dimensional structures.
- Understanding biofilm heterogeneity is crucial for controlling microbial communities.
Purpose of the Study:
- To quantify thickness variability in Pseudomonas aeruginosa, Klebsiella pneumoniae, and mixed biofilms.
- To develop a roughness coefficient for characterizing biofilm structure.
Main Methods:
- Cryoembedding and sectioning of biofilms.
- Image analysis to generate thickness profiles.
- Development of a roughness coefficient.
Main Results:
- Biofilm thickness ranged from <5 to 1000 microm.
- Mixed biofilms were significantly thicker than single-species biofilms.
- P. aeruginosa biofilms were uniformly thick, K. pneumoniae biofilms were patchy.
Conclusions:
- Distinct structural differences exist between single-species and mixed biofilms.
- The roughness coefficient effectively characterizes biofilm heterogeneity.
- Thickness variability influences biofilm structure and substratum coverage.
