title: Screening for limonoid glucosides in Citrus tangerina (Tanaka) Tseng by high-performance liquid chromatography-electrospray ionization mass spectrometry.
abstract: A screening method for limonoid glucosides in the peel of Citrus tangerina (Tanaka) Tseng, which utilizes high-performance liquid chromatography (HPLC) with diode-array detection and interfaced to electrospray ionization mass spectrometry, has been developed. In this way, the UV-Vis spectra and the mass spectra indicate the presence of limonoid glucosides without the necessity of isolating the individual compounds. Two major limonoid glucosides--obacunone glucoside (OG) and nomilin glucoside (NG)--were identified in the methanol extract of the peel. The two limonoid glucosides were taken as the target and isolated by means of preparative HPLC on a C18 reversed-phase column with an acidic acetonitrile-water mobile phase. The structures of OG and NG were further confirmed by nuclear magnetic resonance spectrometry.
authors.affiliation: School of Food Science, Wuxi University of Light Industry, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Tian
authors.forename: X
authors.initials: X
authors.lastname: Ding
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002957:Citrus / Q000737:chemistry*; D005960:Glucosides / Q000032:analysis* / Q000737:chemistry; D036701:Limonins; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods*; D014315:Triterpenes / Q000032:analysis* / Q000737:chemistry
chemical_list: D005960:Glucosides; D036701:Limonins; D014315:Triterpenes; C411190:nomilin glucoside; C411188:obacunone glucoside