Abstract
Our previous study found that the aerial parts of Chinese liquorice (Glycyrrhiza uralensis Fisch.) had pharmacological effects against chronic non-bacterial prostatitis in rats, however the pharmacologically active compounds remain unclear. Here, a method based on UPLC-Q-Exactive Orbitrap-MS was established to qualitatively analyse the flavonoid glycosides rich fraction extracted from the aerial part of G. uralensis Fisch., after pretreatment with n-butanol and enrichment using AB-8 macroporous resin. Using both positive and negative ion modes, 52 compounds were identified or tentatively characterised by comparison with standards and the literature: 40 flavonoids, 8 organic acids, 2 chromones, 1 coumarin, and 1 phenylethanoid glycoside. This study provides not only an approach to enrich flavonoid glycosides but also a methodology for quickly determining the relevant bioactive components in the aerial parts of G. uralensis Fisch.
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