evaluation of cichoric acid of echinacea purpurea extract under different ecological conditions in semnan province iran

echinacea purpurea is an herbaceous perennial plant as members of the asteraceae family. it is one the important medicinal plant in pharmacy industrial. active substances of echinaceae are amplifier of body's immune system and antivirus. echinacea is not native to iran. the phytochemical traits of medicinal plants depend on ecological conditions involving growing areas, climate conditions; various grow stages and genetic modifications. the aim of this study was the evaluation of cichoric acid of e. purpurea extract in different ecological conditions in semnan, iran. dormancy in seeds was broken by treating them with strafication in 4 °c for 48 h, was grown in nursery beds for autumn and early winter and transfered to four areas with different ecological conditions in late winter. chashm, ahuvan, semnan and foladmahale were chosen for this experiment. the spacing of plantlet was about 25 × 45 cm in the field. after 2- 3 months, aerial parts of the plants collected in all areas and extract samples were prepared and characterized using high- performance liquid chromatography (hplc). the components of a basic hplc system were shown significant values of the cichoric acid in plants under four habitats. the level of cichoric acid in one condition was more than standards level that reported in another references. in addition, ecological diversities have significant impacts the quantity of cichoric acid in e. purpurea .