title: Antioxidant and antiradical capacities in apricot (Prunus armeniaca L.) fruits: variations from genotypes, years, and analytical methods.
abstract: The fruit quality parameters and antioxidant capacity (ferric reducing antioxidant power, FRAP) and total phenolic content (TPC) were determined in 27 apricot cultivars and hybrids of diverse origins. Twenty one- to 35-fold variations were measured among FRAP and TPC values. Besides genotype, harvest year also contributed significantly (P≤0.05) to the variations of TPC presumably due to the climatic differences between years. A subset of genotypes (15) was also analyzed for their antiradical activities (2,2'-diphenyl-1-picrylhydrazyl, DPPH; total radical-scavenging activity, TRSA; water-soluble antioxidant capacity, ACW; and lipid-soluble antioxidant capacity, ACL), and vitamin C contents as well as color indices (CIE H°, L*, and chroma). The hybrid "Preventa" had outstanding FRAP (>10.4 mmol ascorbic acid/L), DPPH (74.45%), TRSA (0.002%), ACW (33587.5 nmol AA/L) and ACL (78.65 nmol Trolox/L), TPC (>2890.0 mg gallic acid/L), and vitamin C (16.17 mg/100 g FW) levels and an average carotenoid content estimated from the hue angle (66.99°). Most antioxidant and antiradical activities correlated significantly except for TRSA; the closest correlation was observed between FRAP and ACW (r=0.952). Only TRSA showed significant correlations with color indices, H° and chroma, suggesting TRSA measures at least a fraction of the antioxidant capacity attributable to apricot carotenoids.
authors.affiliation: Dept. of Genetics and Plant Breeding, Corvinus Univ. of Budapest, P.O. Box 53, Budapest, H-1518, Hungary. hegedus.attila@uni-corvinus.hu
authors.forename: Attila
authors.initials: A
authors.lastname: Hegedus
authors.forename: Rita
authors.initials: R
authors.lastname: Engel
authors.forename: László
authors.initials: L
authors.lastname: Abrankó
authors.forename: Emoke
authors.initials: E
authors.lastname: Balogh
authors.forename: Anna
authors.initials: A
authors.lastname: Blázovics
authors.forename: Rita
authors.initials: R
authors.lastname: Hermán
authors.forename: Júlia
authors.initials: J
authors.lastname: Halász
authors.forename: Sezai
authors.initials: S
authors.lastname: Ercisli
authors.forename: Andrzej
authors.initials: A
authors.lastname: Pedryc
authors.forename: Éva
authors.initials: É
authors.lastname: Stefanovits-Bányai
mesh_terms: D001205:Ascorbic Acid / Q000032:analysis; D001713:Biphenyl Compounds / Q000032:analysis; D002338:Carotenoids / Q000032:analysis; D002839:Chromans / Q000032:analysis; D016166:Free Radical Scavengers / Q000032:analysis*; D005638:Fruit / Q000737:chemistry*; D005707:Gallic Acid / Q000032:analysis; D005838:Genotype; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis; D010851:Picrates / Q000032:analysis; D010858:Pigmentation; D027861:Prunus / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; D002839:Chromans; D016166:Free Radical Scavengers; D010636:Phenols; D010851:Picrates; D002338:Carotenoids; D005707:Gallic Acid; C004931:1,1-diphenyl-2-picrylhydrazyl; D001205:Ascorbic Acid; C010643:6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid