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Determination of bioactive compounds in Cortex Phellodendri by high-performance liquid chromatography
Qi Yang1, Feng Zhang, Shou-Hong Gao
1Changzheng Hospital, Second Military Medical University, Department of Pharmacy, 415 Fengyang Rd, Shanghai 200003, People's Republic of China.
Journal of AOAC International
|July 16, 2010
Summary
A new HPLC method accurately quantifies five key compounds, including limonin and four alkaloids, in Cortex Phellodendri. This validated technique is sensitive and reliable for quality control of this traditional Chinese medicine.
Area of Science:
- Analytical Chemistry
- Pharmacognosy
- Phytochemistry
Background:
- Cortex Phellodendri is a traditional Chinese medicine with various bioactive compounds.
- Accurate quantification of these compounds is crucial for quality control and therapeutic efficacy.
- Existing analytical methods may lack the sensitivity or specificity required for comprehensive analysis.
Purpose of the Study:
- To develop and validate a high-performance liquid chromatography (HPLC) method for the simultaneous determination of five bioactive compounds in Cortex Phellodendri.
- To establish a reliable analytical tool for quality assessment of Cortex Phellodendri samples.
Main Methods:
- Development of an HPLC method utilizing a photodiode array detector.
- Separation achieved on an Agilent Diamonsil C18 column with a gradient elution of acetonitrile and aqueous diethylamine phosphate.
- Quantification based on established calibration curves and validated by recovery studies.
Main Results:
- The HPLC method successfully quantified limonin, phellodendrine, jatrorrhizine, palmatine, and berberine.
- Linearity was demonstrated across specified concentration ranges for each compound.
- High average recoveries (97.56-102.53%) and low relative standard deviations (RSD ≤ 1.00%) confirmed method accuracy and precision.
- The method proved efficient, sensitive, and reliable when applied to samples from diverse geographical origins.
Conclusions:
- The developed HPLC-photodiode array detector method provides a robust and validated approach for the quantitative analysis of key bioactive compounds in Cortex Phellodendri.
- This method is suitable for routine quality control and research purposes, ensuring the consistency and safety of herbal medicines derived from Cortex Phellodendri.
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