INTRODUCTION OF ONE IRANIAN PIMPINELLA SPECIES AS A NATURAL SOURCE FOR TRANS-A-BERGAMOTENE PRODUCTION

trans-a-Bergamotene is an aromatic compound that is used for synthesize of the other aromatic compounds.  Pimpinella affinis Ledeb. grows wild in different regions of Iran, north, north-west, center, eastern and north-east. In This research, the aerial parts and seeds of P. affinis werecollected from Noshahr in 2003 and 2004. Essential oils were isolated by hydro-distillation. The yields of stem plus the leaf, inflorescence and seed oils for the first year were 0.26%, 1/1% and 4.1% w/w and for the second year were 0.26%, 0.86% and 2.45%, respectively. Four constituents in stem plus the leaf oil, five constituents in inflorescence oil and six constituents in seed oil were identified in samples of 2003. Six constituents in stem plus the leaf oil, fifteen constituents in inflorescence oil and six constituents in seed oil were identified in samples of 2004. Major constituent of the stem plus the leaf, inflorescence, and seed oils was trans-a-Bergamotene (91.1%, 96.2% and 90.2% in 2003 and 94.3% 84.9% and 95.5% in 2004, respectively).