title: Chemical composition, olfactory evaluation and antioxidant effects of essential oil from Mentha canadensis.
abstract: The chemical composition of the essential oil from cornmint (Mentha canadensis L.) was analyzed by GC/FID and GC-MS. The main constituents were menthol (41.2%) and menthone (20.4%). It was established that cornmint oil had antiradical activity with respect to the DPPH and hydroxyl (OH*) radicals. The concentrations necessary for 50% neutralization of the respective radicals (IC50) were 365.0 microg/mL for DPPH and 0.3 microg/mL for OH*, which was indicative that the antioxidant activity in terms of OH* was higher than that of quercetin. Cornmint oil chelated the Fe3+ ions present in the solution. The oil demonstrated antioxidant activity in a linoleic acid emulsion model system, where at 0.1% concentration it inhibited the formation of conjugated dienes by 57.1% and the generation of secondary oxidized products of linoleic acid by 76.1%.
authors.affiliation: Department of Clinical Pharmacy and Diagnostics, University of Vienna, Pharmacy-Center, Althanstrasse 14, A-1090 Vienna, Austria. leopold.jirovetz@univie.ac.at
authors.forename: Leopold
authors.initials: L
authors.lastname: Jirovetz
authors.forename: Katrin
authors.initials: K
authors.lastname: Wlcek
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: Erich
authors.initials: E
authors.lastname: Schmidt
mesh_terms: D000975:Antioxidants / Q000737:chemistry* / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D017665:Hydroxyl Radical / Q000737:chemistry; D007502:Iron Chelating Agents / Q000737:chemistry; D019787:Linoleic Acid / Q000737:chemistry; D027541:Mentha / Q000737:chemistry*; D009812:Odorants / Q000032:analysis*; D009822:Oils, Volatile / Q000737:chemistry* / Q000494:pharmacology*; D016877:Oxidants / Q000737:chemistry; D010851:Picrates / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D011794:Quercetin / Q000494:pharmacology; D017392:Thiobarbituric Acid Reactive Substances / Q000737:chemistry
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D007502:Iron Chelating Agents; D009822:Oils, Volatile; D016877:Oxidants; D010851:Picrates; D017392:Thiobarbituric Acid Reactive Substances; D017665:Hydroxyl Radical; D011794:Quercetin; D019787:Linoleic Acid; C004931:1,1-diphenyl-2-picrylhydrazyl