Table 1

Biofilm chemical composition.

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


aDry material.

bMeasured as BSA.

cMeasured as dextrose monohydrate.

Baum et al. BMC Microbiology 2009 9:103   doi:10.1186/1471-2180-9-103

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