title: Development and validation of an ultra high performance liquid chromatography electrospray ionization tandem mass spectrometry method for the simultaneous determination of selected flavonoids in Ginkgo biloba.
abstract: A rapid and sensitive ultra high performance liquid chromatography electrospray ionization tandem mass spectrometry method was developed and validated for the simultaneous determination of 13 flavonoids in leaf, stem, and fruit extracts of male and female trees of Ginkgo biloba to investigate gender- and age-related variations of flavonoids content. Chromatographic separation was accomplished on an Acquity UPLC BEH C18 column (50 mm × 2.1 mm id, 1.7 μm) in 5 min. Quantitation was performed using negative electrospray ionization mass spectrometry in multiple reaction monitoring mode. The calibration curves of all analytes showed a good linear relationship (r(2) ≥ 0.9977) over the concentration range of 1-1000 ng/mL. The precision evaluated by an intra- and interday study showed RSD ≤ 1.98% and good accuracy with overall recovery in the range from 97.90 to 101.09% (RSD ≤ 1.67%) for all analytes. The method sensitivity expressed as the limit of quantitation was typically 0.25-3.57 ng/mL. The results showed that the total content of 13 flavonoids was higher in the leaf extract of an old male Ginkgo tree compared to young female Ginkgo trees.
authors.affiliation: Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
authors.forename: Renu
authors.initials: R
authors.lastname: Pandey
authors.forename: Preeti
authors.initials: P
authors.lastname: Chandra
authors.forename: Kamal Ram
authors.initials: KR
authors.lastname: Arya
authors.forename: Brijesh
authors.initials: B
authors.lastname: Kumar
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis*; D020441:Ginkgo biloba / Q000737:chemistry*; D015394:Molecular Structure; D021241:Spectrometry, Mass, Electrospray Ionization; D053719:Tandem Mass Spectrometry
chemical_list: D005419:Flavonoids
keywords: Flavonoids; Ginkgo biloba; Multiple reaction monitoring; Simultaneous determination