Ginsenoside Rg3: Spectral Analysis and Sensitive Detection with Silver Nanoparticles Decorated Graphene
Ginseng saponin Rg3 has attracted much attention in the past decades due to its excellent antitumor activity. Rg3 and related ginsenosides, as natural materials, have the potential to be the base and supporting materials for anticancer drugs. In the present study, infrared spectrum, mass spectrum, 1H nuclear magnetic resonance spectrum, 13C nuclear magnetic resonance spectra 1H–1H COSY, heteronuclear multiple-quantum coherence (HMQC) of loteprednol etabonate were applied and the results were interpreted. All the 1H NMR and 13C NMR chemical shifts were assigned by means of 1H–1H COSY\HMBC and HMQC. The molecular structure of ginsenoside Rg3 has been elucidated. By using silver nanoparticles decorated graphene, the sensitive detection of Rg3 was realized with electrochemical measurements. Electrochemical response was obtained in a wide range of concentration of ginseng saponin Rg3 (0.2–1.4 μmol/L) with the detection limit of 0.02 μmol/L.
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Document Type: Research Article
Publication date: November 1, 2012
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