Abstract
Over forty-five complex free oligosaccharides (of which several are novel) have been isolated and chemically characterized by gas chromatography and high resolution and high mass accuracy matrix-assisted laser desorption/ionization mass spectrometry (MALDI-FTICR MS) in red and white wines, Grignolino and Chardonnay, respectively. Oligosaccharides with a degree of polymerization between 3 and 14 were separated from simple monosaccharides and disaccharides by solid-phase extraction. The concentrations of free oligosaccharides were over 100 mg/L in both red and white wines. The free oligosaccharides-characterized for the first time in the present study-include hexose-oligosaccharides, xyloglucans, and arabinogalactans and may be the natural byproduct of the degradation of cell wall polysaccharides. The coupled gas chromatography and accurate mass spectrometry approach revealed an effective method to characterize and quantify complex functional oligosaccharides in both red and white wine.
Original language | English (US) |
---|---|
Pages (from-to) | 3700-3707 |
Number of pages | 8 |
Journal | Journal of Agricultural and Food Chemistry |
Volume | 60 |
Issue number | 14 |
DOIs | |
State | Published - Apr 11 2012 |
Keywords
- arabinogalactans
- hexose oligosaccharides
- MALDI-FTICR
- oligosaccharides
- wine
- xyloglucans
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Chemistry(all)