Flash Extraction of Functional Components from Radix Astragalus

The extraction of functional components from Radix Astragalus by the flash extraction method was optimized using one-factor-at-a-time experiments followed by an L9(33) orthogonal array design based on the extraction yields of polysaccharides,flavonoids and saponins.The optimal extraction conditions were extraction at a solid-to-liquid ratio of 1:20 and 120 V voltage repeated 3 times for 1 min each time.Under these conditions,the extraction yields of polysaccharides,flavonoids and saponins were 3.728%,0.135% and 1.019%,respectively.In conclusion,the optimized process is a time-saving,highly efficient,energy-saving new method to extract functional components from Radix Astragalus.