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Table 2 Comparison of strains in MST

From: Small-scale analysis of exopolysaccharides from Streptococcus thermophilus grown in a semi-defined medium

Strain

μmax (h-1)

OD620

GalN

Gal

Glc

Composition of repeating

   

(μM)

(μM)

(μM)

unit*

SY89

0.93 ± 0.06

2.7

1.2

7.7

5.9

2 Gal, 2 Glc

IMD04

0.44 ± 0.04

1.8

3.9

26.7

26.8

Unknown

EU10

0.63 ± 0.03

2.6

0.0

49.5

37.2

Unknown

SY102

0.62 ± 0.03

1.3

1.2

27.8

24.0

2 Gal, 2 Glc

LY03 (IMD01)

0.92 ± 0.08

2.0

3.8

8.6

4.2

1 GalN, 2 Gal, 1 Glc

DSM8713

0.96 ± 0.01

2.5

0.2

0.2

0.8

Unknown

  1. 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 [12]. The galactosamine is actually N-acetylgalactosamine, but the acetyl group is removed during hydrolysis.