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Molecularly Imprinted Polymer of Colocynthin, An Effective Tool for Quality Control of Citrullus colocynthis Extracts
Ramezani Farid1, Khanavi Mahnaz2, Shams Ardekani Mohammad Reza2
1Department of Traditional Pharmaceutics, Faculty of Traditional Medicine, Tehran University of Medical Sciences, P.O. Box 14155 6451, Tehran. Iran.
Background:
Different parts of Colocynth, Citrullus colocynthis (L.) Schrad., are used in traditional phytotherapy and homeopathy.
Objective:
In our new approach, a molecularly imprinted polymer was synthesized to absorb colocynthin, the major plant marker, and its capability was evaluated using HPLC-UV.
Method:
A new method was considered to achieve optimal conditions. FT-infrared, N2 adsorption porosimetry, fluorescent and scanning electron microscopy and thermo gravimetric profile of the polymers were studied. The imprinted polymer was applied as molecularly imprinted solid phase extraction sorbent to enrich colocynthin from colocynth oil extract, a traditional medicine dosage form.
Results:
The imprinted polymer showed high capacity and affinity toward colocynthin. Physical assessments demonstrated no major differences between imprinted and nonimprinted polymers. The imprinted polymer was able to absorb colocynthin more efficiently than non-imprinted and control simple solvent extraction from the real sample.
Conclusion:
In conclusion, this polymer is capable of being applied as a promising adsorbent for analysis of colocynth traditional medicine products.
