title: Antioxidant and free-radical scavenging activities of Allium roseum and Allium subhirsutum.
abstract: This study was designed to examine the antioxidant and free-radical scavenging activities of two Allium species, Allium roseum and Allium subhirsutum. This study reports the results concerning bulb, stalk and leaf antioxidant enzyme activities (superoxide dismutase, catalase, guaiacol peroxidase and glutathione peroxidase), quantities of malonyldialdehyde, (*)OH and O(2) (*-) radicals and total antioxidant capacity determined by the FRAP method. Scavenging activities were determined by ESR method. The total antioxidant capacity was the highest in the leaves of Allium roseum. Among the investigated organs the leaves exhibited the highest antioxidant activities in all investigated Allium species. The highest ESR (84.61%) scavenger activity was observed in the leaves of Allium roseum.
authors.affiliation: University of Novi Sad, Faculty of Agriculture, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia. stajnerd@polj.ns.ac.yu
authors.forename: D
authors.initials: D
authors.lastname: Stajner
authors.forename: B M
authors.initials: BM
authors.lastname: Popovic
authors.forename: J
authors.initials: J
authors.lastname: Canadanović-Brunet
authors.forename: R S
authors.initials: RS
authors.lastname: Igić
mesh_terms: D000490:Allium / Q000737:chemistry*; D000975:Antioxidants / Q000737:chemistry*; D002374:Catalase / Q000378:metabolism; D004578:Electron Spin Resonance Spectroscopy; D036681:Fluorescence Recovery After Photobleaching; D016166:Free Radical Scavengers / Q000737:chemistry*; D005979:Glutathione Peroxidase / Q000378:metabolism; D015227:Lipid Peroxidation; D009195:Peroxidase / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry*; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; C121048:guaiacol peroxidase; D002374:Catalase; D009195:Peroxidase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase