Background: Fritillaria imperialis is an endangered species with pharmaceutical alkaloids that can be effective in reducing blood pressure and reducing cardiac palpitations.   Objective: Comparison of head space solid phase microextraction (HS-SPME) and hydro-distillation (HD) techniques in determination of essential oils in Fritillaria imperialis Methods: Quality and quantity determination o...

the essential oils of the aerial parts of three different artemisia species (a.scoparia, a. diffusa, a. turanica ) growing wildly in the northeast of iran were analyzed by gc-ms. twenty-two, twenty-six, and thirteen components were identified in the essential oils of these plants, respectively. the major constituents of the oil ofa. scoparia were b-pinene (16.10%), carvacrol (13.81%), limonene ...