title: Supercritical carbon dioxide extraction of Mentha pulegium L. essential oil.
abstract: The dependence of Mentha pulegium L. (pennyroyal) essential oil composition, obtained by supercritical carbon dioxide (SC-CO(2)), with the following parameters: pressure, temperature, extraction time (dynamic), and modifier (methanol) was studied. The results were also compared with those obtained by conventional hydrodistillation method in laboratory conditions. Regarding the percentages of menthone (30.3%) and pulegone (52.0%), the optimum SFE results were obtained at the following experimental conditions: pressure=100atm, T=35 degrees C, dynamic time=10min, and V(modifier)=0mul. The results of hydrodistillation showed that the major components of M. pulegium L. were pulegone (37.8%), menthone (20.3%), and piperitenone (6.8%). The evaluation of the composition of each extract was performed by gas chromatography-mass spectrometry.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 4155/6451, Iran.
authors.forename: Nasrin
authors.initials: N
authors.lastname: Aghel
authors.forename: Yadollah
authors.initials: Y
authors.lastname: Yamini
authors.forename: Abbas
authors.initials: A
authors.lastname: Hadjiakhoondi
authors.forename: Seied Mahdi
authors.initials: SM
authors.lastname: Pourmortazavi