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Study on the Quality Standards for Yankening Tablets

FU Xiang-hong

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Abstract

Objective The quality standards for Yankening tablets were studied. Methods The TLC methods for identification of Rhizoma Coptidis, Cortex phellodendri, Radix et Rhizoma Rhei were established. A simple HPLC was established for the determination of Baicalin. The mobile phase was methanol-water-phosphoric acid (47∶53∶2). UV detecting wavelength was at 274 nm. Results Rhizoma Coptidis, Cortex phellodendri, Radix et Rhizoma Rhei could be detected. Baicalin showed a linear relationship at the concentration range of 0.276～2.208 μg, r =0.9998. The average recovery was 99.71% and RSD was 0.93% (n =5). Conclusion This method is suitable for the quality control of Yankening tablets.

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What this paper is about

Objective The quality standards for Yankening tablets were studied. Methods The TLC methods for identification of Rhizoma Coptidis, Cortex phellodendri, Radix et Rhizoma Rhei were established. A simple HPLC was established for the determination of Baicalin. The mobile phase was methanol-water-phosphoric acid (47∶53∶2). UV detecting wavelength was at 274 nm. Results Rhizoma Coptidis, Cortex phellodendri, Radix et Rhizoma Rhei could be detected. Baicalin showed a linear relationship at the concentration range of 0.276～2.208 μg, r =0.9998. The average recovery was 99.71% and RSD was 0.93% (n =5). Conclusion This method is suitable for the quality control of Yankening tablets.

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Available abstract

Objective The quality standards for Yankening tablets were studied. Methods The TLC methods for identification of Rhizoma Coptidis, Cortex phellodendri, Radix et Rhizoma Rhei were established. A simple HPLC was established for the determination of Baicalin. The mobile phase was methanol-water-phosphoric acid (47∶53∶2). UV detecting wavelength was at 274 nm. Results Rhizoma Coptidis, Cortex phellodendri, Radix et Rhizoma Rhei could be detected. Baicalin showed a linear relationship at the concentration range of 0.276～2.208 μg, r =0.9998. The average recovery was 99.71% and RSD was 0.93% (n =5). Conclusion This method is suitable for the quality control of Yankening tablets.

Key concepts: Baicalin, Radix (gastropod), Quality standard, Chromatography, Phosphoric acid, Traditional medicine, High-performance liquid chromatography, Linear range

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