title: Antioxidant capacity of cornelian cherry (Cornus mas L.) - comparison between permanganate reducing antioxidant capacity and other antioxidant methods.
abstract: Ethanol extracts (80% in water) of 10 cornelian cherry (Cornus mas L.) genotypes were studied for antioxidant properties, using methods including DPPH(), ()NO, O(2)(-) and ()OH antiradical powers, FRAP, total phenolic and anthocyanin content (TPC and ACC) and also one relatively new, permanganate method (permanganate reducing antioxidant capacity-PRAC). Lipid peroxidation (LP) was also determined as an indicator of oxidative stress. The data from different procedures were compared and analysed by multivariate techniques (correlation matrix calculation and principal component analysis (PCA)). Significant positive correlations were obtained between TPC, ACC and DPPH(), ()NO, O(2)(-), and ()OH antiradical powers, and also between PRAC and TPC, ACC and FRAP. PCA found two major clusters of cornelian cherry, based on antiradical power, FRAP and PRAC and also on chemical composition. Chemometric evaluation showed close interdependence between PRAC method and FRAP and ACC. There was a huge variation between C. mas genotypes in terms of antioxidant activity.
authors.affiliation: Faculty of Agriculture, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia. popovicb@polj.uns.ac.rs
authors.forename: Boris M
authors.initials: BM
authors.lastname: Popović
authors.forename: Dubravka
authors.initials: D
authors.lastname: Stajner
authors.forename: Kevrešan
authors.initials: K
authors.lastname: Slavko
authors.forename: Bijelić
authors.initials: B
authors.lastname: Sandra
mesh_terms: D000872:Anthocyanins / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry*; D005838:Genotype; D017895:Manganese Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D027861:Prunus / Q000737:chemistry* / Q000235:genetics
chemical_list: D000872:Anthocyanins; D000975:Antioxidants; D017895:Manganese Compounds; D010087:Oxides; D010936:Plant Extracts; C048856:permanganic acid