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http://dx.doi.org/10.5806/AST.2013.26.4.221

Validation of LC-MS/MS method for determination of ginsenoside Rg1 in human plasma  

Kim, Yunjeong (Biomedical Research Institute of Chonbuk National University Hospital)
Han, Song-Hee (Biomedical Research Institute of Chonbuk National University Hospital)
Jeon, Ji-Young (Biomedical Research Institute of Chonbuk National University Hospital)
Hwang, Min-Ho (Biomedical Research Institute of Chonbuk National University Hospital)
Im, Yong-Jin (Biomedical Research Institute of Chonbuk National University Hospital)
Lee, Sun Young (Biomedical Research Institute of Chonbuk National University Hospital)
Chae, Soo-Wan (Biomedical Research Institute of Chonbuk National University Hospital)
Kim, Min-Gul (Biomedical Research Institute of Chonbuk National University Hospital)
Publication Information
Analytical Science and Technology / v.26, no.4, 2013 , pp. 221-227 More about this Journal
Abstract
A sensitive and selective liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the investigation of the ginsenoside Rg1 in human plasma. After addition of internal standard (digoxin), plasma was diluted with acetone and methanol (80:20), the supernatant was concentrated and analyzed by LC-MS/MS. The optimal chromatographic separation was achieved on an Agilent Eclipse XDB-C18 column ($4.6{\times}150mm$, $5{\mu}m$) with a mobile phase of 0.1% formic acid in water and 0.1% formic acid in methanol at a flow rate of 0.9 mL/min gradient mode. The standard calibration curve for ginsenoside Rg1 was linear ($r^2=0.9995$) over the concentration range 1~500 ng/mL in human plasma. The intra- and inter-day precision over the concentration range of ginsenoside Rg1 was lower than 7.53% (correlation of variance, CV), and accuracy exceeded 98.28%. This LC-MS/MS assay of ginsenoside Rg1 in human plasma is applicable for quantifying in the pharmacokinetic study.
Keywords
ginsenoside Rg1; LC-MS/MS; validation; human plasma;
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