Title: Study on the Quality Standard of Beiqin Xinke Mixture
Abstract: OBJECTIVE: To establish the quality standard of Beiqin xinke mixture. METHODS:Scutellaria baicalensis,Stemonae Radix and Ephedrae Herba were identified by TLC. The content of baicalin in S. baicalensis was determined by HPLC. The determination was performed on Diamonsil C18(250 mm×4.6 mm,5 μm) column with mobile phase consisted of methanol-water-phosphoric acid (47 ∶ 53 ∶ 0.2,V/V/V) at the flow rate of 1.0 ml/mim. The detection wavelength was set at 280 nm. RESULTS: TLC identification methods of 3 materials had good specificities without interference from negative control. The linear range of baicalin were 0.14-1.40 μg(r=0.999 7) with an average recovery of 100.39%(RSD=2.76%,n=6). RSDs of precision, stability and reproducibility tests were all lower than 2%. CONCLUSIONS: The methods can be used for the quality control of Beiqin xinke mixture.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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