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Analysis of the Ion Adsorption–Desorption Characteristics of Biofilm Matrices
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The characteristics of biofilm polymers formed on stone surfaces in Lake Biwa and ion adsorption and desorption to and from these biofilms were investigated. The results indicated that both positively and negatively charged sites exist in the biofilm polymer. A physicochemical interaction between these sites and ions in the surrounding water seems to promote the adsorption of ions to the biofilm through an attractive electrostatic interaction and an ion-exchange mechanism. The results also indicated that, in comparison with ion-exchange resins, ions were more loosely bound to and desorbed more easily from the biofilm polymer. This suggests that microbes in the biofilm can readily use these ions as nutrient ions. Our present findings indicate that the biofilm may play an important role in supplying nutrient ions to microbes in the biofilm and in the development of a nutrient-rich environment within the biofilm through both ion adsorption and desorption. This study shows for the first time that the inside of a biofilm can be a sustainable environment for microbes.
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The biofilm matrix acts as an ion-exchange resin to reduce the rate of movement through the biofilm.
“the biofilm matrix acts as an ion-exchange resin to reduce the rate of movement through the biofilm.248”
From The dental plaque biofilm matrix (2021) · cites this paper as [248]
The Results and Discussion (Adsorption isotherm; page unavailable) says the biofilm matrix adsorbs ions partly through an ion-exchange mechanism, supporting the resin analogy. It does not report that this reduces the rate of movement through the biofilm; the Kinetics section instead describes rapid ion adsorption. (LLM, conf=0.84)
Experimental — accuracy not yet measuredFor some molecules, such as strongly oxidizing agents, reaction with the outer layers of the biofilm can impede diffusion to the center of the structure.
“For some molecules, such as strongly oxidizing agents, reaction with the outer layers of the biofilm can impede diffusion to the center of the structure.”
From The dental plaque biofilm matrix (2021) · cites this paper as [248]
The Results and Discussion section on ion adsorption and desorption describes electrostatic binding of nutrient ions, not reactions of oxidizing agents at a biofilm’s outer layers. Searches for oxidizing agents and impeded diffusion to the center found no passage addressing that mechanism. The copy provides no page numbers for these passages. (LLM, conf=0.74)
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Metadata
- Authors
- Kurniawan, A., Yamamoto, T., Tsuchiya, Y., & Morisaki, H.
- Affiliations
- Ritsumeikan University (JP)
- Corresponding author
- Morisaki, Hisao
- Venue
- Microbes and Environments
- Published
- 2012
- Volume
- 27
- Issue
- 4
- Pages
- 399-406
- ISSN
- 1342-6311 (ISSN-L)
- 1347-4405
- PMC
- PMC4103547
- OpenAlex
- W2060869387
- Cited by
- 52
- References
- 30
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 7 · 2021: 5 · 2020: 5 · 2019: 9 · 2018: 4 · 2017: 1 · 2016: 2 · 2015: 3
- FWCI
- 0.39
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Microbes and Environments (publishedVersion)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Institute for Fermentation, Osaka
- Ministry of Education, Culture, Sports, Science and Technology
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
- Physical Sciences › Earth and Planetary Sciences › Earth-Surface Processes › Building materials and conservation
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Keywords
- ion adsorption, ion desorption, electrostatic interactions, ion exchange, rock surfaces, Lake Biwa, biofilm matrix
- MeSH terms
- Adsorption, Amino Acids, Carboxylic Acids, Food, Fresh Water, Ions, Kinetics, Soil Microbiology, Water, Biofilms, Static Electricity
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