title: Chemical composition, olfactory evaluation and antioxidant effects of essential oil from Mentha x piperita.
abstract: The chemical composition of the essential oil from peppermint (Mentha x piperita L.) was analyzed by GC/FID and GC-MS. The main constituents were menthol (40.7%) and menthone (23.4%). Further components were (+/-)-menthyl acetate, 1,8-cineole, limonene, beta-pinene and beta-caryophyllene. Peppermint oil possessed antiradical activity with respect to DPPH (diphenyl picryl hydrazyl) and hydroxyl (OH*) radicals, exercising stronger antioxidant impact on the OH* radical. The concentrations required for 50% inhibition of the respective radical (IC50) were 860 microg/mL for DPPH and 0.26 microg/mL for OH*. Peppermint essential oil demonstrated antioxidant activity in a model linoleic acid emulsion system in terms of inhibiting conjugated dienes formation by 52.4% and linoleic acid secondary oxidized products generation by 76.9% (at 0.1% concentration).
authors.affiliation: Kurt Kitzing Co., Hinterm Alten Schloss 21, D-86757 Wallerstein, Germany.
authors.forename: Erich
authors.initials: E
authors.lastname: Schmidt
authors.forename: Stefanie
authors.initials: S
authors.lastname: Bail
authors.forename: Gerhard
authors.initials: G
authors.lastname: Buchbauer
authors.forename: Ivanka
authors.initials: I
authors.lastname: Stoilova
authors.forename: Teodora
authors.initials: T
authors.lastname: Atanasova
authors.forename: Albena
authors.initials: A
authors.lastname: Stoyanova
authors.forename: Albert
authors.initials: A
authors.lastname: Krastanov
authors.forename: Leopold
authors.initials: L
authors.lastname: Jirovetz
mesh_terms: D000975:Antioxidants / Q000302:isolation & purification* / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000737:chemistry / Q000302:isolation & purification; D003855:Deoxyribose; D005609:Free Radicals / Q000302:isolation & purification; D006801:Humans; D036142:Mentha piperita / Q000737:chemistry*; D008610:Menthol / Q000302:isolation & purification; D009812:Odorants; D009822:Oils, Volatile / Q000302:isolation & purification*; D010851:Picrates / Q000737:chemistry / Q000302:isolation & purification; D011794:Quercetin; D017392:Thiobarbituric Acid Reactive Substances / Q000032:analysis
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D005609:Free Radicals; D009822:Oils, Volatile; D010851:Picrates; D017392:Thiobarbituric Acid Reactive Substances; D008610:Menthol; D003855:Deoxyribose; D011794:Quercetin; C019466:menthone; C004931:1,1-diphenyl-2-picrylhydrazyl