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Article Abstract

Objective: To develop a HPLC method for determination of chlorogenic acid in Solanum torvum and provide a scientific basis for evaluating the quality and reasonable utilization of the herb.

Methods: HPLC was used to quantitatively determine the chlorogenic acid content in Solanum torvum from different origin, different harvest time and different part. The assay was performed on a Agela Promosil C18 (4.6 mm x 250 mm, 5 microm) column and eluted with a mobile phase consisted of acetonitrile -0.1% phosphoric acid solution at a flow rate of 1.0 ml/min. The column temperature was set at 35 degrees C. The detection wavelength was 327 nm.

Results: The calibration curve was linear within the range of 0.1000 - 200.0 microg/mL (r = 0.9999). The average recoveries were 99.8% (RSD = 0.71%). The contents of chlorogenic acid in Solanum torvum were different from different origin, different harvest time and different part.

Conclusion: The method is reliable, accurate and specific. It can be used for quality control of Solanum torvum and reasonable utilization of the herb.

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