Journal
CHROMATOGRAPHIA
Volume 69, Issue 5-6, Pages 531-536Publisher
SPRINGER HEIDELBERG
DOI: 10.1365/s10337-008-0934-6
Keywords
Column liquid chromatography; Time-of-flight mass spectrometry; Dried ginger; Identification; Diarylheptanoids; Gingerol-related compounds
Funding
- National Science and Technology Supporting Program of the Ministry of Science and Technology of P. R. China [2006BAI08B03-07]
- Scientific Research Plan Program of the Science and Technology Commission of Shanghai, P. R. China [2403DZ19548]
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A tandem liquid chromatographic-time-of-flight mass spectrometric (LC-TOFMS) method has been developed for rapid separation and identification of diarylheptanoids and gingerol-related compounds in aqueous extracts of dried ginger. Total-ion-current chromatograms and mass spectra were acquired. A formula database of known compounds was established, against which components of dried ginger could be rapidly identified by matching their exact masses with theoretical masses of compounds calculated from their empirical formulae. Identification of 20 compounds was accomplished with error of 4 ppm, and further confirmation of elemental composition was obtained from the abundance of the isotope peaks. LC-TOFMS has been shown to be a useful tool for rapid identification of compounds in aqueous extracts of dried ginger.
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