Format

Send to

Choose Destination
See comment in PubMed Commons below
Carbohydr Res. 1994 Oct 17;263(2):243-56.

Structure identification of feruloylated oligosaccharides from sugar-beet pulp by NMR spectroscopy.

Author information

  • 1Institute of Food Research, Norwich Laboratory, Colney, United Kingdom.

Abstract

1D NMR (1H and 13C) and 2D NMR spectroscopy have been used to determine the structure of feruloylated oligosaccharides obtained by enzymic degradation or mild acid hydrolysis of sugar-beet pulp. Feruloylated oligosaccharides derived from pectic neutral side-chains containing arabinose or galactose residues were identified. In the feruloylated arabinose oligosaccharides, feruloyl groups were linked to O-2 of L-Ara f residues. The structure of the feruloylated arabinose disaccharide was identified as O-[2-O-(transferuloyl)-alpha-L-Ara f]-(1-->5)-L-Ara f and that of the feruloylated arabinose trisaccharide as O-alpha-L-Ara f-(1-->3)-O-[2-O-(trans-feruloyl)-alpha-L-Ara f]-(1-->5)-L- Ara f. The structure of the feruloylated galactose disaccharide was identified as O-[6-O-(trans-feruloyl) -beta-D-Gal p]-(1-->4)-D-Gal p. From our results, we suggest that the feruloyl groups present in sugar-beet pulp are linked to the arabinofuranosyl residues of the main core of alpha-(1-->5)-linked arabinan chains and to the galactopyranosyl residues of the main core of beta-(1-->4)-linked type I galactan chains.

PMID:
7805052
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk