Simultaneous determination of eleven major flavonoids in the pollen of Typha angustifolia by HPLC-PDA-MS.
Keywords
Abstract
BACKGROUND
The pollen of Typha angustifolia L. has been used for the treatment of dysmenorrhea, stranguria and metrorrhagia. Flavonoids are major active compounds in this pollen and their quantification is important for its quality control.
OBJECTIVE
To establish an HPLC-PDA-MS method for simultaneous determination of the 11 majority flavonoids in the pollen of T. angustifolia.
METHODS
The optimal condition of separation was achieved on a reversed-phase C₁₈ column with gradient elution of acetonitrile and 0.05% formic acid (v/v) at a flow-rate of 0.8 mL/min; the column temperature was set at 35 °C.
RESULTS
All calibration curves showed good linear regression (r² > 0.9992). The method provided good accuracy, precision, recovery and sensitivity for the quantification of the 11 compounds analysed.
CONCLUSIONS
The HPLC method established is appropriate for the quality assurance of the pollen of T. angustifolia.
