The interaction of inulin oligosaccharides with Ba2+ studied by 1H NMR spectroscopy

J.W. Timmermans, M.G.J.W. Bitter, D. de Wit, J.F.G. Vliegenthart

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    8 Citations (Scopus)

    Abstract

    A High Performance Anion Exchange Chromatography method with gradient elution in combination with a refractive index detector has been developed. This method enables a convenient way to determine Pulsed Amperometric Detector (PAD) responses using mixtures without prior separation. In addition, large quantities of salts could be separated from small oligomers (Degree of Polymerisation (DP) 5-12) using RP-18 chromatography. The interaction between Ba2+ ions and inulin oligomers with DP 2-12 was studied with 1H NMR spectroscopy and was shown to be strongly dependent on the degree of polymerisation. The interaction appeared to be more pronounced for DP 4-5 than for both smaller and larger molecules, which suggests a conformational change around this DP.
    Original languageEnglish
    Pages (from-to)213-230
    JournalJournal of carbohydrate chemistry
    Volume16
    Issue number2
    DOIs
    Publication statusPublished - 1997

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