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[Quality standard for Xindi soft capsule].

Yu-Jie Wang1, Yi Zhang, Rui Gu

  • 1College of Traditional Chinese Pharmacy, Chengdu University of Traditional Chinese medicine, Chengdu 611731, China. superwangyj@163.com

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica
|June 20, 2006
PubMed
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This study establishes a quality control standard for Xindi soft capsule using High-Performance Liquid Chromatography (HPLC) to quantify key flavonoids. The developed method ensures accurate and reproducible analysis for product quality assurance.

Area of Science:

  • Pharmacognosy
  • Analytical Chemistry
  • Quality Control

Background:

  • Xindi soft capsule is a herbal product requiring standardized quality control.
  • Flavonoids like quercetin, kaempferol, and isorhamnetin are key active compounds in herbal medicines.

Purpose of the Study:

  • To establish a reliable quality control standard for Xindi soft capsule.
  • To develop and validate an analytical method for quantifying specific flavonoids in the capsule.

Main Methods:

  • Isolation of quercetin, kaempferol, and isorhamnetin using Thin-Layer Chromatography (TLC).
  • Chromatographic separation employing a Diamonsil C18 column with a specific mobile phase (acetonitrile-water-phosphoric acid).
  • UV detection at 254 nm with controlled flow rate and column temperature.

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Main Results:

  • Successful identification of quercetin, kaempferol, and isorhamnetin by TLC.
  • Demonstrated good linearity for all three compounds within specified ranges (r > 0.9998).
  • Achieved high average recovery rates (96.8-97.1%) with low Relative Standard Deviation (RSD ≤ 2.0%), indicating method precision.

Conclusions:

  • The developed analytical method is accurate and exhibits good reproducibility.
  • This validated method is suitable for the routine quality control of Xindi soft capsule.
  • Ensures consistent product quality and efficacy of Xindi soft capsule.