Determination method on flavonoids of Shumai tablets by spectrophotometry

Determination method on flavonoids of Shumai tablets is studied systematically through examining the wavelength, the linear relation between the concentration and absorbance, precision, recovery and reappearance by spectrophotometry. The test indicated, that the linear range of flavonoids determination for Shumai tablets was 2～12μg/ml, r=0.9997, the average recovery of the additional sample was 99.6, with RSD=0.037, when the determination wavelength was 430 nm. The method was accurate and reliable. The determination result of flavonoids was stable.