Bacterial aggregation assisted by anionic surfactant and calcium ions.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 34586147.
- Also identified by DOI 10.1039/d1sm00479d.
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Abstract
We identify factors leading to aggregation of bacteria in the presence of a surfactant using absorbance and microscopy. Two marine bacteria, <i>Marinobacter hydrocarbonoclasticus</i> SP17 and <i>Halomonas titanicae</i> Bead 10BA, formed aggregates of a broad size distribution in synthetic sea water in the presence of an anionic surfactant, dioctyl sodium sulfosuccinate (DOSS). Both DOSS at high concentrations and calcium ions were necessary for aggregate formation, but DOSS micelles were not required for aggregation. Addition of proteinase K but not DNase1 eliminated aggregate formation over two hours. Finally, swimming motility also enhanced aggregate formation.
Medical subject headings
- Calcium
- Surface-Active Agents