title: Antioxidant properties of Viburnum opulus and Viburnum lantana growing in Turkey.
abstract: In the present study, antioxidant properties of the water extracts of different parts of Viburnum opulus and Viburnum lantana (Caprifoliaceae) were investigated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging and superoxide anion scavenging methods. The extracts were prepared from the fruits, branches, and leaves of V lantana and V opulus species. The branch extracts of V lantana and V opulus inhibited superoxide anion in a concentration-dependent manner. Compared with t-tocopherol, the fruit extract of V lantana did not show any scavenging effect on superoxide anion formation. V lantana leaf extracts, however, showed a moderate scavenging effect on superoxide anion formation, whereas V lantana branch extracts showed a strong scavenging effect (IC50 = 3.1 mg/ml) on superoxide anion in higher concentration. On the other hand, all extracts exhibited a scavenging effect on the DPPH radical with various potencies. When compared with butylated hydroxytoluene, V opulus branch and V lantana leaf extracts, as well as V lantana branch, V opulus fruit and V lantana fruit extracts, showed strong DPPH radical scavenging activity with IC50 values of 0.014, 0.035, 0.052, 0.057 and 0.085 mg/ml, respectively.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, University of Ankara, Tandogan, Ankara, Turkey. altun@pharmacy.ankara.edu.tr
authors.forename: Mehmet Levent
authors.initials: ML
authors.lastname: Altun
authors.forename: Gülcin Saltan
authors.initials: GS
authors.lastname: Citoğlu
authors.forename: Betül Sever
authors.initials: BS
authors.lastname: Yilmaz
authors.forename: Tülay
authors.initials: T
authors.lastname: Coban
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000494:pharmacology; D010936:Plant Extracts / Q000032:analysis / Q000494:pharmacology; D013481:Superoxides / Q000032:analysis* / Q000494:pharmacology; D014421:Turkey; D027925:Viburnum / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010936:Plant Extracts; D013481:Superoxides