title: Structural characterization of phenolics and betacyanins in Gomphrena globosa by high-performance liquid chromatography-diode array detection/electrospray ionization multi-stage mass spectrometry.
abstract: The metabolite profiling of Gomphrena globosa inflorescences was performed by high-performance liquid chromatography-diode array detection/electrospray ionization multi-stage mass spectrometry (HPLC-DAD/ESI-MS(n)). Based on the fragmentation patterns, 24 phenolic compounds were characterized. The identified phenolics include p-coumaric and ferulic acids, quercetin, kaempferol, isorhamnetin, and hydroxylated 6,7-methylenedioxyflavone derivatives, as well as their aglycones, none of them reported before in the species. This is also the first time that tetrahydroxy-methylenedioxyflavone derivatives and acetylglycosides are described in nature. Betacyanins were also found. This study significantly extends the knowledge of the G. globosa metabolome, by providing further insights into its phenolic composition.
authors: CEBAS (CSIC) Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain. federico@cebas.csic.es
authors: Federico
authors: F
authors: Ferreres
authors: Angel
authors: A
authors: Gil-Izquierdo
authors: Patrícia
authors: P
authors: Valentão
authors: Paula B
authors: PB
authors: Andrade
mesh_terms: D027703:Amaranthaceae / Q000737:chemistry*; D050859:Betacyanins / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005419:Flavonoids / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D050859:Betacyanins; D005419:Flavonoids; D010936:Plant Extracts