The antimutagenic effects of 46 kinds of medicinal plants that have been used as traditional folk antitumor agents in Korea were studied by using Ames mutagenicity teat. Most of the methanolic extracts from the plants which were used in this experiment showed strong antimutagenic activity toward atlatoxin B₁(AFB₁) in Salmonella typhimurium TA100 and TA98. However, N-methyl-N'-vitro-N-nitrosoguanidine (MNNG) induced mutagenicity was not blocked by adding the methanolic extracts of the plants except persimmon leaves (Diospyros kaki Thunberg) and Elaeagnus umbellata.

The underground parts of foso rugoso(Rosaceae) , which have been used as an antidiabetic in the folk medicines of Korea, lowered the blood pressure inthe normal rat . And from the chloroform soluble fraction, euscaphic acid wasisolated with β -sitosterol and campesterol .