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黄芩苷水溶液的稳定性

仇峰, 唐星, 何仲贵*, 李好枝   

  1. 沈阳药科大学药学院药剂系, 沈阳 110016
  • 收稿日期:2003-11-02 修回日期:2004-05-10 出版日期:2004-06-15 发布日期:2004-06-15
  • 通讯作者: 何仲贵*

Stability of Baicalin Aqueous Solution by Validated RP-HPLC

QIU Feng, TANG Xing, HE Zhong-gui*, LI Hao-zhi   

  1. School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
  • Received:2003-11-02 Revised:2004-05-10 Online:2004-06-15 Published:2004-06-15
  • Contact: HE Zhong-gui*

摘要: 目的 采用RP-HPLC法考察了黄芩苷水溶液的稳定性. 方法 采用经典恒温加速试验考察了温度对黄芩苷水溶液的影响,并测定了黄芩苷水溶液的最稳定pH. 结果 黄芩苷水溶液损失10%所需要的时间仅为18.1 h, 降解活化能为79.1kJ·moL-1. 黄芩苷的最稳定pH值采用实测值为4.28. 结论 黄芩苷水溶液受温度和pH的影响很大,因此在生产过程中, 应尽可能保持低温, 并调节溶液pH值使接近黄芩苷的最稳定pH.

关键词: 反相高效液相色谱法, 反相高效液相色谱法, 黄芩苷, 黄芩苷, 稳定性, 稳定性, 温度, 温度, pH, pH

Abstract: Aim In the present study a RP-HPLC method was developed and validated to investigate the stability of baicalin aqueous solution. Methods The influences of temperature and pH on the stability of baicalin aqueous solution were investigated by classic homoiothermic acceleration test, and the pH for the most stable solution was determined. Results The time when baicalin suffered 10% loss was found to be 18.1 h, and the degradation activation energy of baicalin was 79.1 kJ·moL-1. The pH at which baicalin is most stable is 4.28. Conclusion The temperature should be kept at a lower level and the pH should be adjusted to near that for the most stable solution in the production of baicalin preparations.

Key words: RP-HPLC, RP-HPLC, baicalin, baicalin, stability, stability, temperature, temperature, pH, pH

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Supporting: *Corresponding author. Tel.: 024-23843711-3832