Introducing Capillary Electrophoresis with Laser-Induced Fluorescence (CE-LIF) as a Potential Analysis and Quantification Tool for Galactooligosaccharides Extracted from Complex Food Matrices

S.A. Albrecht, H.A. Schols, B. Klarenbeek, A.G.J. Voragen, H. Gruppen

Research output: Contribution to journalArticleAcademicpeer-review

25 Citations (Scopus)

Abstract

The analysis and quantification of (galacto)oligosaccharides from food matrices demands both a reproducible extraction method as well as a sensitive and accurate analytical method. Three typical matrices, namely, infant formula, fruit juice, and a maltodextrin-rich preparation, to which a commercial galactooligosaccharide mixture was added in a product concentration range from 1.25 to 30%, served as model substrates. Solid-phase extraction on graphitized carbon material upon enzymatic amyloglucosidase pretreatment enabled a good recovery and a selective purification of the different galactooligosaccharide structures from the exceeding amounts of particularly lactose and maltodextrins. With the implementation of capillary electrophoresis in combination with laser-induced fluorescence (CE-LIF) detection, a new possibility facilitating a sensitive qualitative and quantitative determination of the galactooligosaccharide contents in the different food matrices is outlined. Simultaneous monitoring and quantifying prebiotic oligosaccharides embedded in food matrices presents a promising and important step toward an efficient monitoring of individual oligosaccharides and is of interest for research areas dealing with small quantities of oligosaccharides embedded in complex matrices, e.g., body liquids.
Original languageEnglish
Pages (from-to)2787-2794
JournalJournal of Agricultural and Food Chemistry
Volume58
Issue number5
DOIs
Publication statusPublished - 2010

Keywords

  • gastrointestinal symptoms
  • galacto-oligosaccharide
  • polysaccharides
  • bifidobacteria
  • metabolism
  • prebiotics
  • ingestion
  • products
  • sugars

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