Determation of Indigo in Indigo wood root tea

摘要

As a common medicine, people usually drink indigo wood root tea to prevent and cure cold in China. The indigo(indole group) was found as a useful componet, not only could cure cold, but also have good effect for other diseases. Moreover, it does not have negative effect. The separation and extraction technology are used to mensurate indigo from indigo wood root tea. We determined the absorption of indigo in the tea solution at wavelength of 290nm with HPLC and found the tea has some indigo(or components with indole froup indole group)in it. As a tea with good effect for healthy we suggest to drint it when fell catch cold or have a fever.