ABSTRACT
This study was aimed to establish an HPLC method for simultaneous determination of the content of echinacoside, acteoside and isoacteoside in Total Cistanchis glycosides Capsules. Waters C18 column (4.6 mm ×150 mm, 5 μm) was used with the mobile phase of methanol-0.1% formic acid at a flow rate of 1.0 mL·min-1. The detection wavelength was set at 330 nm. The column temperature was maintained at 30℃ . The results showed that the linear ranges of echinacoside, acteoside and isoacteoside were in the range of 27.792-277.92 μg·mL-1 (r = 0.9996,n = 6), 2.4184-24.184 μg·mL-1 (r = 0.9996, n = 6), 5.106-51.06 μg·mL-1 (r = 0.9998, n = 6). The average recoveries of three components were in accordance with the determination requirement. It was concluded that the method was simple and accurate, which can be used in the content determination of echinacoside, acteoside and isoacteoside in Total Cistanchis glycosides Capsules.
ABSTRACT
In this article, HPLC fingerprint analysis method for total flavonoids from pollen of Brassica campestris L.was established., The HPLC fingerprint was performed on Waters C18 column (250 mm × 4.6 mm, 5 μm), eluted gradiently with the mixture of acetonitrile and 0.4% phosphoric acid aqueous solution at a flow rate of 0.8 mL·min-1. The column temperature was 40℃. The detection wavelength was 320 nm. The HPLC standard fingerprint of total flavonoids from pollen of Brassica campestrisL. was established, and 16 common peaks were calibrated. The method was simple, stable, and reproducible. It could be applied for quality control of total flavonoids from pollen of Brassica campestris L.