Astragali Radix, the dry root of Astragalus membranceus (Fisch) Bge, known as Huangqi in China, as a primary Chinese tonic herb has been used for centuries. Calycosin, an isoflavonoid, is the major active component in Astragali Radix. Calycosin displayed beneficial effects such as antioxidation, antitumor, anti-ischemia, inhibition of hyperpermeability induced by low osmolarity, neuroprotective activity and scavenging free radicals.
The present study was to optimize the extraction technology of total c...