Physcion is extracted from The Root of Rheum palmatum L. contains anthracene derivatives, stilbene derivatives, tannin compounds , organic acid compounds and volatile oils etc. The main bioactive components in in the Radix et Rhizoma Rhei Extract is anthracene derivatives, which includes aloe emodin,chrysaron,chrysophanol,emodin,isoernodin, laccaic acid, physcion, rhein,rheidin, palmidin,sennosides.
Physcion-A high activity fungicide of botanical resource. The Physcion has a very strong inhabition on about 26kinds of the bacterias, such as staphylococcus aureus，Escherichia Coli，Pseudomonas aeruginosa，streptococcus and shigella dysenteriae etc.
In agriculture, the Physcion is used as fungicide to control Powdery mildew, Downy Mildew, anthracnose and gray mold etc. Fungi diseases.