LAUSR

An industrial MCM-41-miniaturized matrix solid-phase dispersion extraction coupled with response surface methodology was explored to determine L-epicatechin, typhaneoside, isorhamnetin-3-O-neohespeidoside, naringenin, kaempferol, and isorhamnetin in Pollen typhae by ultra-high performance liquid chromatography connected to a photodiode array detection. Several variables were optimized in detail, including mesh number of sieve, type of adsorbent, mass ratio of sample to adsorbent, grinding time, methanol concentration, and elution volume. Central composite design was applied to optimize the best conditions for the maximum yields of the total flavonoids. The results displayed a good linear relationship (R > 0.9992) and the recoveries ranged from 92.9 to 103% (RSD < 4.53%) of the six flavonoids. The optimal method with high efficiency and low consumption was obviously better than heating reflux and ultrasonic extraction. It was proven that the developed industrial MCM-41-miniaturized matrix solid-phase dispersion extraction coupled with simple ultra-high performance liquid chromatography method could be a rapid and efficient tool for extraction and determination of flavonoids in natural products.