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[RP-HPLC determination of berberine in cortex Phellodendri]
Summary
A new method accurately quantifies berberine in Cortex Phellodendri using high-performance liquid chromatography. This reliable technique ensures precise analysis for quality control of this traditional Chinese medicine.
Area of Science:
- Analytical Chemistry
- Pharmacognosy
- Chromatography
Context:
- Cortex Phellodendri, a traditional Chinese medicine, contains berberine, a bioactive alkaloid.
- Accurate quantification of berberine is crucial for quality control and therapeutic efficacy.
- Existing analytical methods may lack the sensitivity or specificity required.
Purpose:
- To develop and validate a reversed-phase high-performance liquid chromatographic (RP-HPLC) method for berberine determination.
- To establish a reliable analytical technique for berberine quantification in Cortex Phellodendri extracts.
- To provide a method with high accuracy and precision for pharmaceutical analysis.
Summary:
- A RP-HPLC method was established using a Zorbax C8 column and diazepam as the internal standard.
- The mobile phase consisted of acetonitrile-water (35:65) with H3PO4, at a flow rate of 1 mL/min and column temperature of 25°C.
- Berberine was detected at 346 nm, with linearity from 0.14 to 2.0 µg, achieving 101.7% recovery and 1.83% relative standard deviation (RSD).
Impact:
- This validated HPLC method offers a precise and accurate tool for the quality assessment of berberine in Cortex Phellodendri.
- The developed method can aid in ensuring the consistency and safety of herbal medicines containing berberine.
- Facilitates research on the pharmacological activities and therapeutic applications of berberine.