Essential oil composition and anatomical study of Scrophularia striata Boiss.

Scrophularia striata Boiss belongs to Scrophulariaceae family which contains 5 species in the flora of Iran. Its local name in Lorestan province is Teshne Daro. S. striata was collected from northwest mountains of Kuh-dasht in Lorestan province, Iran. The collected plant materials were dried in shade and subjected to hydro distillation using a Clevenger apparatus. The oil was analyzed by capillary GC and GC/MS. The anatomical studies were carried out using distaining method with brown Bismarck and methyl green. GC and GC/MS analysis of the essential oil resulted in the identification of 34 compounds, representing 90.3% of the oil. Major constituents isolated from the essential oil of Scrophularia striata were linalool (18.3%), 6, 10, 14-trimethylpentadecane-2-one (8.4%), dibutyl phthalate (6.9%) and β-damascone (5.9%). The anatomical studies showed that, oil-secreting idioblasts and terpenoides were observed in cortex region.