remarkable variation in phytochemicals of ferula gummosa bioss. essential oils collected from different parts of iran

Background and objectives: the oleo-gum resin from ferula gummosa bioss. is commercially important. variability of geographic location has shown a deep effect on essential oil of different genus of plants. thus, evaluation of oleo-gum resin of ferula gummosa from different locations is important for further studies. in the present study, phytochemicals profile of essential oil of oleo-gum resins from f. gummosa in different geographic location and various bioclimates of iran, were studied. methods: the oleo-gum resin of f. gummosa was collected from different regions of iran. the essential oils of the samples were extracted by clevenger apparatus and were analyzed by gc-ms. results: the highest amount of essential oil compared was observed in the samples from damghan area (24.0%), firuzkuh area (22%) and kalat-e-naderi area (22%). the variability in the oil composition of different samples exhibited a notable difference in monoterpenes content from 39.15 % to 87.48%. based on gc-ms analysis, the major components were β-pinene (5.11-63.80 %), sabinene (3.37-30.69%), α-pinene (4.43-12.72%) and δ-carene (2.38-10.23 %). the highest concentrations of β-pinene (63.80%) and sabinene (30.69%) were observed in the shiraz and torbat-e-jam essential oils, respectively.  the highest amounts of α-pinene (12.72%) and δ-carene (10.23%) were recorded in firuzkuh and shiraz areas, respectively. conclusion: significant variation in the component of the essential oils from different oleo-gum resins can be used to improve the knowledge about the endemic medicinal plants.