Bacterial Eps Analysis
Bacterial Eps Analysis - Related Videos
02:50
An Assay to Study Bile-Salt Induced Biofilm Formation through EPS Matrix Detection
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2025
This video demonstrates a fluorescence-based method for quantifying bile salt-induced biofilm formation. Upon the addition of bile salts in the culture of a pathogenic enteric bacteria, biofilm production is detected using a fluorescent lectin that binds to the polysaccharides in the extracellular polymeric substance (EPS) matrix of the biofilm.
14:48
Proteomic Profile of EPS-Urine through FASP Digestion and Data-Independent Analysis
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Cited by 10 •
2021
Here, we present an optimized on-filter digestion protocol with detailed information about the following: protein digestion, peptide purification and data independent acquisition analysis. This strategy is applied to the analysis of expressed prostatic secretions-urine samples and allows high proteome coverage and low missing value label-free profiling of the urinary proteome.
01:21
EPS and iPS Cells in Disease Research
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2023
Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
12:23
Bacterial Growth Curve Analysis and its Environmental Applications
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Luisa Ikner Bacteria are among the most abundant life forms on Earth. They are found in every ecosystem and are vital for everyday life. For example, bacteria affect what people eat, drink, and breathe, and there are actually more bacterial cells within a person’s body than mammalian cells. Because of the importance of bacteria, it is preferable to study particular species of bacteria...
09:00
Precise, High-throughput Analysis of Bacterial Growth
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Cited by 56 •
2017
Quantitative evaluation of bacterial growth is essential to understanding microbial physiology as a systems-level phenomenon. A protocol for experimental manipulation and an analytical approach are introduced, allowing for precise, high-throughput analysis of bacterial growth, which is a key subject of interest in systems biology.
FAQs
Different EPS components can be examined as separate contributors to the properties of a biofilm. Polysaccharides, proteins, nucleic acids, and lipids provide composition-level information, while total abundance and spatial organization add complementary context. Relating these measurements to adhesion, structure, stress protection, or interactions with surfaces helps explain why biofilms display different biological behaviors.
The extraction step is important because it allows researchers to evaluate the extracellular matrix rather than treating it as indistinguishable from the cells that produce it. Once separated, the material can be quantified and characterized through assays, microscopy, chromatography, or spectroscopy. Comparing results across extraction protocols can support interpretation of EPS abundance and composition.
Method choice depends on whether the goal is measurement, composition, or organization. Colorimetric assays can support quantification of EPS components, whereas chromatographic and spectroscopic methods provide more detailed characterization. Microscopy adds information about how the matrix is arranged around cells or within a biofilm, so combining approaches gives a broader analysis.
Microscopy contributes structural information that bulk measurements may not show. It can be used to examine the organization of EPS in relation to bacterial cells and biofilm structure, while assays report component abundance. This distinction matters when researchers need to connect the amount of extracellular material with its arrangement and possible relationship to adhesion or surface interactions.
A typical workflow begins by separating EPS from bacterial biomass, followed by measurement and characterization of the recovered material. Researchers may apply colorimetric assays to quantify components, then use microscopy, chromatography, or spectroscopy to examine organization or composition. The selected sequence depends on whether the study emphasizes abundance, molecular features, spatial arrangement, or several of these outcomes.
It supports investigations of microbial ecology, infection, biotechnology, and approaches for controlling persistent biofilms. In these settings, measurements of EPS abundance, composition, and organization can help relate the matrix to cell adhesion, biofilm architecture, environmental stress protection, or interactions with host tissues and surfaces. The same analytical framework connects cellular behavior with broader biological and applied questions.