Shewanella Biofilm Chemical Mapping via Surface Enhanced Raman Microscopy

Gal Schkolnik's dataset contains in-situ chemical maps of a Shewanella oneidensis MR-1 biofilm precipitating silver nanoparticles. The data monitors the distribution of cytochromes, flavins, polysaccharides, and phosphate over time using surface enhanced confocal Raman microscopy (SECRaM). This method provides spatially and temporally resolved chemical investigation without patterned supports or introduced reagents.

Use Cases

• Analyze the spatial co-distribution of cytochromes and polysaccharides within the biofilm structure.
• Track temporal changes in reduced versus oxidized flavin signals to study metabolic activity.
• Correlate phosphate distribution patterns with biofilm development stages over a 6-day period.
• Validate the SECRaM method by comparing chemical maps from bio-produced silver nanoparticles to conventional techniques.

Strengths

• Provides in-situ chemical mapping of an undisturbed biofilm, avoiding experimental artifacts.
• Monitors multiple specific chemical components: cytochromes, flavins, polysaccharides, and phosphate.
• Data derived from a novel SECRaM method that eliminates the need for patterned supports or introduced metal salts.

Limitations

• Dataset scope is limited to a single bacterial species (Shewanella oneidensis MR-1) under specific laboratory conditions.
• Sample size and temporal resolution details (e.g., number of time points, scan replicates) are not specified.
• The analytical method is specialized, requiring expertise in confocal Raman microscopy for full interpretation.

Provenance

Source

Gal Schkolnik, published via Dryad.

Collection Method

Surface enhanced confocal Raman microscopy (SECRaM) of a Shewanella biofilm on an Ag/AgCl interface.

Time Range

Biofilm development monitored over time; specific duration not detailed beyond reference to a '6 day old biofilm'.

Freshness

Last updated 2020-06-24.