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Table 1 Biofilm chemical composition.

From: Characterization of structures in biofilms formed by a Pseudomonas fluorescens isolated from soil

Analyte Analysis method Mass concentration (μg mg-1)a
Calcium ICP-AES 29.9
Magnesium ICP-AES 10.1
Total proteins UV absorption 490
Total proteinsb Folin reaction (Lowry assay) 240
Acidic polysaccharidesc Phenol-sulfuric acid reaction 79
Neutral polysaccharidesc Phenol-sulfuric acid reaction 67
Nucleic acids UV absorption 46
DNA DAPI-fluorescence 5.4
  1. aDry material.
  2. bMeasured as BSA.
  3. cMeasured as dextrose monohydrate.