title: Isolation and determination of ginsenosides in American ginseng leaves and root extracts by LC-MS.
abstract: Ginseng saponins (ginsenosides) were extracted from the root and leaves of locally cultivated American ginseng (Panax quinquefolium L.). For the isolation of compounds from plant samples three different extraction methods were utilized: accelerated solvent extraction, the ultrasound-assisted solvent extraction and mechanical shaking assisted solvent extraction. The separation of compounds was achieved with a water-acetonitrile gradient system using a C18 reversed-phase column. Target compounds were identified in MS(2) and MS(3) experiments. The relative distribution of these ginsenosides in each root and leaf extract was established. The limit of detection of the method was less than 30 ng/ml. Recovery of ginseng saponins in spiked samples exceeded 80%, while the relative standard deviation ranged from 7.1 to 9.1%. The total concentrations of ginsenosides were 41 and 13 mg/g in root and leaves.
authors.affiliation: Department of Environmental Chemistry and Ecoanalytics, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarina Street, 87100, Toruń, Poland. bbusz@chem.uni.torun.pl
authors.forename: T
authors.initials: T
authors.lastname: Ligor
authors.forename: A
authors.initials: A
authors.lastname: Ludwiczuk
authors.forename: T
authors.initials: T
authors.lastname: Wolski
authors.forename: B
authors.initials: B
authors.lastname: Buszewski
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D002853:Chromatography, Liquid / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D036145:Ginsenosides / Q000032:analysis / Q000302:isolation & purification*; D005894:Panax / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012997:Solvents / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D000097:Acetonitriles; D036145:Ginsenosides; D010936:Plant Extracts; D012997:Solvents; D014867:Water; C032159:acetonitrile