1964 年 84 巻 11 号 p. 1143-1144
On the chemical components of Xanthorrhiza apiifolia L'HÉRIT, grown in the south of the United States, as one of the berberine containing drugs, and their pharmacological activities, some remarkable findings were already reported. The cultivation and the yield of berberine·HCl from aqueous extract were examined and comparing with Japanese Phellodendron amurense RUPR. and Coptis japonica MAKINO, the cultivation was found to be easy and also this plant was found to be pretty noticeable plant-resources for berberine·HCl. The base in this plant is also identified with the tetrahydro derivative to be berberine.