Structure determination of the neutral exopolysaccharide produced by Lactobacillus delbrueckii subsp. bulgaricus OLL1073R-1.
Carbohydr Res
; 413: 115-22, 2015 Sep 02.
Article
em En
| MEDLINE
| ID: mdl-26117825
ABSTRACT
The neutral exopolysaccharide (NPS) of Lactobacillus delbrueckii subsp. bulgaricus strain OLL1073R-1 was purified and characterized. The molecular mass was 5.0×10(6) g/mol. Sugar and absolute configuration analyses gave the following composition d-Glc, 1; d-Gal, 1.5. The NPS was also submitted to periodate oxidation followed by borohydride reduction and Smith degradation. Sugar and methylation analyses, (1)H and (13)C nuclear magnetic resonance, and mass spectrometry of the NPS or of its specifically modified products allowed determining the repeating unit sequence {2)Glc(α1-3)Glc(ß1-3)[Gal(ß1-4)]Gal(ß1-4)Gal(α1-}n. The structure is compared to that of exopolysaccharides produced by other Lactobacillus bulgaricus strains.
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Base de dados:
MEDLINE
Assunto principal:
Polissacarídeos Bacterianos
/
Lactobacillus delbrueckii
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article