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  • Title: The rapid identification of isoflavonoids from Belamcanda chinensis by LC-NMR and LC-MS.
    Author: Kang SW, Kim MC, Kim CY, Jung SH, Um BH.
    Journal: Chem Pharm Bull (Tokyo); 2008 Oct; 56(10):1452-4. PubMed ID: 18827388.
    Abstract:
    The use of hyphenated LC-NMR and LC-MS techniques for the purpose of directly identifying the major constituents of Belamcanda chinensis was investigated. Reversed-phase isocratic chromatography was performed using an acetonitrile-water solvent system on a C18 column. The NMR spectrum yielded five main peaks, whose analysis revealed them to be 5, 6, 7, 3'-tetrahydroxy-4'-methoxyisoflavone (1), tectorigenin (2), iristectorigenin A (3), irigenin (4), and irisflorentine (5). The identification of these constituents was confirmed by performing LC-ESI-MS experiment. This study shows that hyphenated LC-NMR and LC-MS can be used for the rapid (70 min) identification of the isoflavonoids.
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