Antitumor activity of spinasterol isolated from Pueraria roots Abstract We purified phytoestrogens from Pueraria root (Pueraria Mirifica from Thailand and Pueraria lobata from Korea), which is used as a rejuvenating folk medicine in Thailand and China. Dried, powdered plant material was extracted with 100% ethanol and further separated by concentration, filtration, and thin layer silica […]