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Analysis of Sesquiterpene Lactones, Lignans, and Flavonoids in Wormwood (Artemisia absinthium L.) Using High-Performance Liquid Chromatography (HPLC)−Mass Spectrometry, Reversed Phase HPLC, and HPLC−Solid Phase Extraction−Nuclear Magnetic Resonance

Aberham, Anita, Cicek, Serhat Sezai, Schneider, Peter, Stuppner, Hermann
Journal of agricultural and food chemistry 2010 v.58 no.20 pp. 10817–10823
thermal stability, nuclear magnetic resonance spectroscopy, quantitative analysis, bioactive properties, cold storage, Artemisia absinthium, medicinal plants, high performance liquid chromatography, storage temperature, photostability, lignans, flavonoids, chemical constituents of plants, mass spectrometry, qualitative analysis, sesquiterpenoid lactones, solid phase extraction, herbal medicines
Today, the medicinal use of wormwood (Artemisia absinthium) is enjoying a resurgence of popularity. This study presents a specific and validated high-performance liquid chromatography (HPLC)−diode array detection method for the simultaneous determination and quantification of bioactive compounds in wormwood and commercial preparations thereof. Five sesquiterpene lactones, two lignans, and a polymethoxylated flavonoid were baseline separated on RP-18 material, using a solvent gradient consisting of 0.085% (v/v) o-phosphoric acid and acetonitrile. The flow rate was 1.0 mL/min, and chromatograms were recorded at 205 nm. The stability of absinthin was tested exposing samples to light, moisture, and different temperatures. Methanolic and aqueous solutions of absinthin were found to be stable for up to 6 months. This was also the case when the solid compound was kept in the refrigerator at −35 °C. In contrast, the colorless needles, when stored at room temperature, turned yellow. Three degradation compounds (anabsin, anabsinthin, and the new dimer 3′-hydroxyanabsinthin) were identified by HPLC−mass spectrometry and HPLC−solid-phase extraction−nuclear magnetic resonance and quantified by the established HPLC method.