Abstract
The exopolysaccharides produced by three propionibacteria strains, Propionibacterium freudenreichii 109, Propionibacterium
freudenreichii 111, and Propionibacterium thoenii 126, grown on whey-based media, were found to be charged heteropolymers,
composed of D-glucose, D-mannose, and D-glucuronic acid in molar ratios of 2:2:1. By means of methylation analysis, mass
spectrometry, partial acid hydrolysis, and 1D/2D NMR (1H and 13C) studies, it was determined that all three exopolysaccharides
contain the same branched, pentasaccharide repeating unit:
β-D-GlcpA α-D-Glcp
1 1
↓ ↓
6 6
→3) -α-D-Manp-(1→3) -α-D-Manp-(1→3) -α-D-Glcp-(1→
| Original language | Undefined/Unknown |
|---|---|
| Pages (from-to) | 726-745 |
| Number of pages | 21 |
| Journal | Carbohydrate Research |
| Volume | 343 |
| Publication status | Published - 2008 |