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Studies on Quality Standard of Niuhuang Qinggong Wan

Qing Zhang

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Abstract

Objective:To determine the quality standard of Baipuhuang Tablets. Methods:Radix Scutellariae,Cortex Phellodendri Chinensis in Baipuhuang Tablets were identified by TLC. The content of Baicalin was determined by HPLC. Using ODS column,Methanol-Water -Phosphoric acid (43∶ 57∶ 0. 2) as the mobile phase at flow rate of 1. 0mL.min -1,wavelength of the detection was 280nm. Results:The qualitative identification with TLC were specific. liner range of Baicalin was 0. 0442μg ～ 0. 442μg(r = 1. 0000);the recovery was 102. 3% (RSD = 1. 5% ). Conclusion:This method is simple,rapid,accurate,highly sensitive and well re-producible. This method can be used for the quality control of Baipuhuang Tablets.

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What this paper is about

Objective:To determine the quality standard of Baipuhuang Tablets. Methods:Radix Scutellariae,Cortex Phellodendri Chinensis in Baipuhuang Tablets were identified by TLC. The content of Baicalin was determined by HPLC. Using ODS column,Methanol-Water -Phosphoric acid (43∶ 57∶ 0. 2) as the mobile phase at flow rate of 1. 0mL.min -1,wavelength of the detection was 280nm. Results:The qualitative identification with TLC were specific. liner range of Baicalin was 0. 0442μg ～ 0. 442μg(r = 1. 0000);the recovery was 102. 3% (RSD = 1. 5% ). Conclusion:This method is simple,rapid,accurate,highly sensitive and well re-producible. This method can be used for the quality control of Baipuhuang Tablets.

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Available abstract

Objective:To determine the quality standard of Baipuhuang Tablets. Methods:Radix Scutellariae,Cortex Phellodendri Chinensis in Baipuhuang Tablets were identified by TLC. The content of Baicalin was determined by HPLC. Using ODS column,Methanol-Water -Phosphoric acid (43∶ 57∶ 0. 2) as the mobile phase at flow rate of 1. 0mL.min -1,wavelength of the detection was 280nm. Results:The qualitative identification with TLC were specific. liner range of Baicalin was 0. 0442μg ～ 0. 442μg(r = 1. 0000);the recovery was 102. 3% (RSD = 1. 5% ). Conclusion:This method is simple,rapid,accurate,highly sensitive and well re-producible. This method can be used for the quality control of Baipuhuang Tablets.

Key concepts: Baicalin, Radix (gastropod), Quality standard, Chromatography, Phosphoric acid, High-performance liquid chromatography, Chemistry, Biology

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