plant alkaloid
4.The genus Stephania is one of the alkaloid-rich genus of the family Menispermaceae and includes about 50 species distributed in the whole world, among which approximately 32 species has been found in China, and 18 species are used medicinally. In this paper, 18 medicinal plant species in Stephania, their distritution, abundance of resources are reported, and the content of total alkaloid in each plant, the distribution of 17 alkaloids in root and tuberous root and the content of 10 alkaloids.
8.To assess the medicinal value of cultural Anisodus tanguticus,the contents of four bioactive tropane alkaloids,anisodine,anisodamine,scopolamine and atropine,in cultural and wild materials were determined by the HPLC method.The results showed that content of each alkaloid in the aboveground parts of cultural and wild samples was lower than that in roots,and this explained why it was not the whole plant but the root that was used as medicinal materials.The content of each alkaloid in the roots of one-year cultural material was lower than that in the two-year plants.The discrepancy of the total of four alkaloids between one-year and wild plants is not significant.Moreover,the total of four alkaloids,and the contents of anisodine,scopolamine,and atropine in two-year plants were higher than those in wild plant.Thus there is medicinal value in the cultivated A.tanguticus as well as wild A.tanguticus,especially in the two-year cultural A.tanguticus.
