Determination of costunolide and dehydrocostuslactone in Liuwei Muxiang Capsules by HPLC / 中草药

ABSTRACT

Objective: To establish an HPLC method for the determination of costunolide and dehydrocostuslactone in Liuwei Muxiang Capsules. Methods: The determination was performed on VP-ODS (250 mm × 4.6 mm, 5 μm) with column temperature set at 25℃. The mobile phase consisted of methanol-0.4% phosphoric acid water (72∶28) at a flow rate of 1.0 mL/min. The detection wavelength was set at 225 nm. Results: The linear range of costunolide and dehydrocostuslactone was 203.12-2 031.20 ng and 207.84-2 078.40 ng (r = 0.999 9), with average recovery at 101.1% and 101.2%, RSD = 0.48% and 0.73% (n = 6). Conclusion: The method proved is simple, accurate, reproducible, and specific, and it can be used for the quality control and evaluation of Liuwei Muxiang Capsules.