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Phytochem Anal. 2005 May-Jun;16(3):217-21.

Superheated water chromatography-nuclear magnetic resonance spectroscopy of kava lactones.

Author information

  • 1Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK.

Abstract

Three kava lactone constituents of Piper methysticum, namely, kawain, methysticin and desmethoxyyangonin, have been separated and identified by reversed-phase HPLC using superheated deuterium oxide as the mobile phase and on-line 1H-NMR detection. The method avoids the use of organic solvents in the mobile phase and hence interferences in the NMR analysis are minimised.

PMID:
15997856
[PubMed - indexed for MEDLINE]
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