Glycyrrhizin is a triterpenoid saponin found in Glychyrrhiza glabra (licorice). Chemically, glycyrrhizin is a sulphated polysaccharide. It is considered to the active constituent of the drug and the standardization of licorice is based on glycyrrhizin content. The standardized extracts of licorice sold in the market contain 20% of glychrrhizin. Glycyrrhizin is converted into glychyrrhetic acid by an enzyme, glycaronidase.
Singh, Amrit Pal
"Glycyrrhizin: A Review,"
Ethnobotanical Leaflets: Vol. 2005
, Article 36.
Available at: http://opensiuc.lib.siu.edu/ebl/vol2005/iss1/36