Monomer concentrations after hydrolysis in 4 M HCl. EPSs were analysed at the optical density (OD) indicated. Abbreviations: μmax, maximum specific growth rate; Glc, glucose; Gal, galactose; GalN, galactosamine. No rhamnose or glucosamine was found in the EPSs from any of the strains. *Composition of soluble EPS as determined by NMR . The galactosamine is actually N-acetylgalactosamine, but the acetyl group is removed during hydrolysis.