Chemical composition, olfactory evaluation and antioxidant effects of essential oil from Mentha canadensis.
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%.
Jirovetz
Leopold
L
Department of Clinical Pharmacy and Diagnostics, University of Vienna, Pharmacy-Center, Althanstrasse 14, A-1090 Vienna, Austria. leopold.jirovetz@univie.ac.at
Wlcek
Katrin
K
Buchbauer
Gerhard
G
Stoilova
Ivanka
I
Atanasova
Teodora
T
Stoyanova
Albena
A
Krastanov
Albert
A
Schmidt
Erich
E
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
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