title: Identification of Glycyrrhiza species by direct analysis in real time mass spectrometry.
abstract: DART (Direct Analysis in Real Time)-MS is a novel mass spectrometric ion source, and allows the analysis of most compounds at ambient pressure and ground potential by producing [M+H]+ molecular ion species. Using this method, we examined the compounds characteristic of several kinds of licorices. For the analysis of Glycyrrhiza inflata Batalin, the peak at m/z 339 originates mainly from [M+H]+ of licochalcone A (LA), a species-specific compound. This peak was hardly detected in G. glabra Linné and G. uralensis Fischer. These results indicate that G. inflata can be differentiated from the other two species by detection of LA peaks using DART-MS analysis.
authors.affiliation: Department of Natural Medicine and Phytochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
authors.forename: Eriko
authors.initials: E
authors.lastname: Fukuda
authors.forename: Masaki
authors.initials: M
authors.lastname: Baba
authors.forename: Noriaki
authors.initials: N
authors.lastname: Iwasaki
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Uesawa
authors.forename: Kazunori
authors.initials: K
authors.lastname: Arifuku
authors.forename: Osamu
authors.initials: O
authors.lastname: Kamoe
authors.forename: Koji
authors.initials: K
authors.lastname: Tsubono
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Okada
mesh_terms: D006035:Glycyrrhiza / Q000145:classification*; D013058:Mass Spectrometry / Q000379:methods*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D013045:Species Specificity