1.A tall, coarse plant(Inula helenium) native to central Asia, having rayed yellow flower heads. The roots are used medicinally.
欧洲南部终年草本植物,有窄子和黄,黑色胡萝卜似的根部可食用。
2.Objective:to study the chemical constituents of the essential oil of Inula helenium L.were extracted by steam distillation(SD)and supercritical-CO2 fluid(SFE).