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Related Experiment Videos

Capillary electrophoretic analysis of flavonoids.

U Seitz1, P J Oefner, S Nathakarnkitkool

  • 1Institute of Radiochemistry, University of Innsbruck, Austria.

Electrophoresis
|January 1, 1992
PubMed
Summary

This study presents a rapid capillary electrophoresis method for flavonoid separation and quantification. The optimized method achieved high resolution and sensitivity for rutin in plant extracts.

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Area of Science:

  • Analytical Chemistry
  • Separation Science

Background:

  • Flavonoids are important plant compounds with diverse biological activities.
  • Efficient separation and quantification methods are crucial for their analysis.

Purpose of the Study:

  • To develop a rapid and high-resolution capillary electrophoresis method for flavonoid separation.
  • To quantify rutin in Sambuci flos extracts using the developed method.

Main Methods:

  • Capillary electrophoresis (CE) utilizing electrophoresis and electroendosmosis.
  • Borate buffer at pH 10 in a fused silica capillary.
  • Optimization of borate concentration for improved selectivity and resolution.
  • Quantification using an internal standard and molar ratio-peak area ratio method.

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Main Results:

  • Flavonoids were separated in under ten minutes.
  • Increased borate concentration improved selectivity and resolution.
  • Rutin exhibited a detection limit of 0.02 mg/mL with good linearity.
  • Accurate quantification of rutin in Sambuci flos extract with a 3.8% coefficient of variation.

Conclusions:

  • Capillary electrophoresis offers a fast and effective method for flavonoid analysis.
  • The developed method is suitable for routine quality control of herbal products.
  • This technique provides high resolution and sensitivity for flavonoid quantification.