Echinacea plants are widely distributed in North America. Their preparations are widely used as immune enhancers in the world. In the 19th century, North American immigrants were also widely used, and the climate gradually spread to Europe. As a common drug for upper respiratory tract infection, it was also used for trauma, lymphadema, measles and other diseases. The aerial parts and roots of Echinacea purpurea, the roots of Echinacea narrow leaf and Echinacea white are the most important raw materials for the preparation. Caffeic acid derivatives are the immunoactive components of Echinacea purpurea in traditional Chinese medicine. Chicory acid is a very important immunoactive component of Echinacea purpurea, which has the pharmacological effects of enhancing immunity, anti-inflammatory and anti-oxidation, and has stable curative effects.  

     Cichoric acidIt can be used with alkyl amide. Alkyl amide alone has no antioxidant activity, but it can enhance the antioxidant activity of cichoric acid. Cichoric acid crystals are filiform and needle shaped. Because of its functions of enhancing cellular immunity, humoral immunity, anti-oxidation and anti-virus, it is widely planted all over the world and used for various commercial purposes. Cichoric acid is a caffeic acid derivative, which is one of the most abundant phenolic compounds in Echinacea purpurea. Cichoric acid is one of the most important immunoactive components in chicory and Echinacea purpurea. Recent pharmacological studies have shown that cichoric acid can enhance immune function and anti-inflammatory effect, inhibit hyaluronidase, protect collagen from degradation free radicals, and inhibit HIV-1 and HIV-1 integrase.