J Ethnopharmacol. 1987 May; 19(3): 279-83.
Anti-Bacteroides fragilis substance from rhubarb.
Oriental Medicine Research Center, Kitasato Institute, Tokyo, Japan.
Extracts of 178 Chinese herbs were screened for their antibacterial activity against Bacteroides fragilis a major anaerobic microorganism in the intestinal flora of humans. Only rhubarb root (Rheum officinale) was found to have significant activity and the purified active substance was identified as rhein.