title: Volatile constituents and antioxidant activity of flowers, stems and leaves of Nasturtium officinale R. Br.
abstract: GC-MS analyses of the essential oils of leaves, stems and flower of Nasturtium officinale resulted in the identification of 9, 8 and 15 compounds, representing 97%, 100% and 94.7% of the oils, respectively. The main compounds of the oil of leaves were myristicin (57.6%), α-terpinolene (8.9%) and limonene (6.7%). Caryophyllene oxide (37.2%), p-cymene-8-ol (17.6%), α-terpinolene (15.2%) and limonene (11.8%) were the main components in stems, whereas limonene (43.6%), α-terpinolene (19.7%), p-cymene-8-ol (7.6%) and caryophyllene oxide (6.7%) were the major constituents in the oil of flowers. All the samples were subjected to a screening for their possible antioxidant activities using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and β-carotene-linoleic acid assays. In the above tests, methanol extracts of leaves showed higher antioxidant activity than the oils and methanol extracts of stems and flowers.
authors.affiliation: Department of Biology, Lorestan University, Khoramabad, Iran. amiri_h_lu@yahoo.com
authors.forename: Hamzeh
authors.initials: H
authors.lastname: Amiri
mesh_terms: D000081248:Allylbenzene Derivatives; D000975:Antioxidants / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D001593:Benzyl Compounds / Q000032:analysis; D001713:Biphenyl Compounds; D053138:Cyclohexenes / Q000032:analysis; D000081007:Cymenes; D004148:Dioxolanes / Q000032:analysis; D005419:Flavonoids / Q000032:analysis; D035264:Flowers / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D007492:Iran; D000077222:Limonene; D000432:Methanol; D039821:Monoterpenes / Q000032:analysis; D031223:Nasturtium / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry*; D010636:Phenols / Q000032:analysis; D010851:Picrates; D018515:Plant Leaves / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D011748:Pyrogallol / Q000031:analogs & derivatives / Q000032:analysis; D012717:Sesquiterpenes / Q000032:analysis; D013729:Terpenes / Q000032:analysis
chemical_list: D000081248:Allylbenzene Derivatives; D000975:Antioxidants; D001593:Benzyl Compounds; D001713:Biphenyl Compounds; D053138:Cyclohexenes; D000081007:Cymenes; D004148:Dioxolanes; D005419:Flavonoids; D039821:Monoterpenes; D009822:Oils, Volatile; D010636:Phenols; D010851:Picrates; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D013729:Terpenes; D011748:Pyrogallol; C005246:myristicin; C007210:4-cymene; D000077222:Limonene; C004931:1,1-diphenyl-2-picrylhydrazyl; C515179:caryophyllene oxide; D000432:Methanol