Pressurized liquid extraction followed by high-performance liquid chromatography for determination of seven active compounds in Cortex Dictamni

A new method based on pressurized liquid extraction (PLE) followed by a sensitive and specific HPLC-DAD analysis is developed for determination of seven compounds in Cortex Dictamni. The operational parameters of PLE, such as extraction solvent, extraction temperature, extraction pressure, static ex...

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Bibliographic Details
Published in:Journal of Chromatography A 2006-03, Vol.1108 (2), p.268-272
Main Authors: Jiang, Y., Li, S.P., Chang, H.T., Wang, Y.T., Tu, P.F.
Format: Article
Language:English
Subjects:
Analytical chemistry
Biological and medical sciences
Chemistry
Chromatographic methods and physical methods associated with chromatography
Chromatography, High Pressure Liquid - methods
Content determination
Cortex Dictamni
Dictamnus - chemistry
Exact sciences and technology
General pharmacology
HPLC
Magnetic Resonance Spectroscopy
Medical sciences
Other chromatographic methods
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plant Roots - chemistry
PLE
Pressure
Quality control
Spectrophotometry, Ultraviolet
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Summary:A new method based on pressurized liquid extraction (PLE) followed by a sensitive and specific HPLC-DAD analysis is developed for determination of seven compounds in Cortex Dictamni. The operational parameters of PLE, such as extraction solvent, extraction temperature, extraction pressure, static extraction time, flush volume and extraction cycles were optimized, using the extraction efficiencies of dictamnine, obacunone and fraxinellone as targets. The optimized procedure employed MeOH as extraction solvent, 150 °C of extraction temperature, 1500 psi extraction pressure, 5 min of static extraction time, 60% flush volume and the extraction recoveries of the three compounds were nearly to 100% for only one cycle. The following HPLC analysis was performed on a reversed-phase C 18 column with methanol–water as mobile phase in gradient manner, detected at 236 and 218 nm. The limits of detection (LOD) and limits of quantification (LOQ) of the seven compounds were in the range of 0.4–15.6 ng and 1.2–38.8 ng. This assay can be readily utilized as a quality control method for Cortex Dictamni and other related medicinal plants.
ISSN:0021-9673
DOI:10.1016/j.chroma.2006.01.077