ABSTRACT
OBJECTIVE: To develop a method for the determination of saponins, amino acids and nucleosides in Panacis Japonici Rhizoma from different habitats by UFLC-QTRAP-MS/MS. METHODS: The chromatographic separation was performed on an XBridge C18 coulumn(4.6 mm×100 mm,3.5 μm) at 30 ℃ with gradient elution of 0.1% formic acid solution-0.1% formic acid acetonitrile, and the flow rate was 0.8 mL•min-1, using multiple-reaction monitoring(MRM) mode. RESULTS: The 33 constituents showed good linearity(r>0.999 0) in the range of the tested concentrations; the precision, repeatability and stability were good; the average recovery rates were between 96.95% and 101.8%, and the relative standard deviations were less than 5%. CONCLUSION: The established method is accurate and reliable, which can be used as a reference for the quality evaluation and control of Panacis Japonici Rhizoma.
ABSTRACT
Objective: To establish quantitative analysis of multi-components by single marker (QAMS) method for simultaneous determining the content of seven saponins in Panacis Japonici Rhizoma, and to evaluate the adaptation and application of QAMS method in the quality control of Panacis Japonici Rhizoma. Methods: The relative factor (fs/i) of ginsenoside Rg1, Re, Rb1, pseudoginsenoside RT1, chikusetsusaponin IV and a were established by HPLC method with chikusetsusaponin V as internal standard, which were used to calculate the content of seven saponins in Panacis Japonici Rhizoma. Meanwhile, external standard method (ESM) was used to calculate the content of seven saponins. The difference between QAMS and ESM was analyzed to evaluate the accuracy of QAMS. Results: The fs/i of ginsenoside Rg1, Re, Rb1, pseudoginsenoside RT1, chikusetsusaponin IV and IVa were 1.286 7, 1.432 7, 0.966 6, 0.962 4, 1.207 2, and 0.938 4. There was no significant difference between the content of 10 batches of Panacis Japonici Rhizoma determined by QAMS and ESM. Conclusion: The established QAMS method is accurate and can be used for quantitative analysis and quality evaluation of the content of seven saponins in Panacis Japonici Rhizoma.
ABSTRACT
Objective To analyze the monosaccharide composition and the relative content of different alcohol precipitations of Panax japonicus polysaccharides.Methods The four components of Panax japonicus polysaccharides were isolated by stepwise ethanol precipitation method.The four components of Panax japonicus polysaccharides were hydrolyzed with trifluoroacetic acid (TFA) and derivated by l-phenyl-3-methyl-5-pyrazolo (PMP),respectively.The monosaccharide composition and relative content were analyzed using LC-FT-ICR-MS and HPLC-UV method.Results The four components of Panax japonicus polysaccharides consisted of glucose,rhamnose,galacturonic acid,galactose,arabinose,and glucose was the main monosaccharide.With the increase of ethanol concentration,the relative content of Ara increased gradually,as while the GalA decreased.Conclusions Precolumn derivation HPLC method was successfully applied for the determination of the monosaccharides in Panax japonicus polysaccharides,and there were differences in the four ethanol precipitations of Panax japonicus polysaccharides.The study can provide a basis for the separation of Panax japonicus polysaccharides.
ABSTRACT
A method, for determination of saponins, amino acids and nucleosides in Panacis Japonici Rhizoma of ultra fast liquid chromatography with triple quadrupole linear ion trap mass spectrometry (UFLC-QTRAP-MS/MS), was established to investigate the effect of different processing methods on the target components of Panacis Japonici Rhizoma. The chromatographic separation was performed on a XBridgeC₁₈(4.6 mm×100 mm, 3.5 μm) at 30 °C with a gradient elution of 0.1% formic acid solution-0.1% formic acid acetonitrile, and the flow rate was 0.8 mL·min⁻¹, using multiple-reaction monitoring (MRM) mode. The grey relational analysis was adopted for the analysis of different processing samples. The results showed that the thirty-three constituents were in a good linear range and the correlation coefficient was greater than 0.999 0; the precision, repeatability and stability were good; the average recovery rates were between 95.33% and 101.8%, and the relative standard deviations were less than 5%. The result of grey relational analysis showed that the complete rhizomes without peeling, which were adopted for the microwave dried method, had the best quality. The established method was accurate and reliable, which could be used to appraise the quality of Panacis Japonici Rhizoma. Our study may lay the way for the processing method of Panacis Japonici Rhizoma in optimization,normalization and standardization.
Subject(s)
Amino Acids , Chromatography, High Pressure Liquid , Chromatography, Liquid , Nucleosides , Panax , Chemistry , Phytochemicals , Rhizome , Chemistry , Saponins , Tandem Mass SpectrometryABSTRACT
Objective To develop an HPLC method for simultaneous content determination of ginsenoside Rg1, Re and Rb1 in Panacis Japonici Rhizoma.Methods Chromatographic separation was carried out by using an Agilent Poroshell 120 C18 column (4.6 mm × 100 mm, 2.7μm). The mobile phase consisted of acetonitrile-0.1% phosphoric acid with gradient elution at a flowrate of 1.0 mL/min, and the injection volume was 10μL. The detection wavelength and column temperature were 203 nm and 30℃ respectively.Results Ginsenoside Rg1, Re and Rb1 had the baseline separation and were in good linear range. The recovery rates were 99.5%, 103.0% and 100.5% respectively.Conclusion The approach is simple, accurate, with good repeatability and short analysis period, which can determine the contents of ginsenoside Rg1, Re and Rb1 correctly and provide references for quality control of Panacis Japonici Rhizoma.