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China Surfactant Detergent & Cosmetics ›› 2023, Vol. 53 ›› Issue (11): 1345-1350.doi: 10.3969/j.issn.2097-2806.2023.11.015

• Analytical methods and testing • Previous Articles     Next Articles

Determination of ferulic acid and baicalin content in Gui Qin toothpaste and its pharmacodynamic study

Zheng Lixia,Gao Huiqin,Li Sa,Guo Congjia,Hao Qianying,Wu Guotai*()   

  1. School of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China
  • Received:2023-03-28 Revised:2023-10-25 Online:2023-11-22 Published:2023-11-21
  • Contact: *Tel.: +86-13919102724, E-mail: 1018830451@qq.com.

Abstract:

A method for determining the content of ferulic acid and baicalein in the toothpaste by high performance liquid chromatography (HPLC) was established, and its pharmacological effects such as anti-inflammatory, analgesic and hemostatic effects were studied. Angelica and Baical skullcap root are the main medicines of Gui Qin toothpaste. The content of ferulic acid and baicalein, the main components of Gui Qin toothpaste, was determined by HPLC. The column was Agilent ZOBAX SB C18 (2.1 mm×150 mm, 5 μm), the mobile phase was acetonitrile-0.2% acetic acid aqueous solution (gradient elutation), the flow rate was 1.0 mL/min, the detection wavelength was 320 nm, and the column temperature was 35 ℃. The anti-inflammatory, analgesic and hemostatic effects of Gui Qin toothpaste were investigated by establishing a model of xylene-induced ear swelling, mouse hot plate method and mouse liver wound bleeding model. The expression of inflammatory factors such as tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6) in the mouse ear tissues was detected by ELISA. The injection rates of ferulic acid and baicalin show a good linear relationship between the injection concentration and the peak area in the range of 3.04-304 μg/mL and 2.86-286 μg/mL, respectively (R2>0.999 7). The RSDs of the precision, stability and repeatability tests are less than 3.0%. The average dosing recovery rates are 98.95% and 99.87%, and the RSDs are 1.51% and 0.22%, respectively. The sample should contain no less than 0.54 mg of ferulic acid per 1 g and no less than 16.8 mg of baicalin. The HPLC method has strong specificity, good repeatability and stability, and can be used for quality control of Gui Qin toothpaste. Pharmacodynamic experiments have shown that Gui Qin toothpaste has good anti-inflammatory, analgesic and hemostatic effects. This study provides an experimental basis for the development and clinical application of Gui Qin toothpaste in the later stage.

Key words: Gui Qin toothpaste, ferulic acid, baicalein, content determination, high performance liquid chromatography

CLC Number: 

  • TQ658