title: Antioxidants in different parts of oleaster as a function of genotype.
abstract: BACKGROUND
  Fruits of oleaster (Elaeagnus angustifolia L.) were used in traditional medicine to treat various diseases. The aim of this study was to evaluate and compare the phenol and flavonoid contents and antioxidant activity of methanol extracts from the fruit peel, flesh and seed of seven genotypes of oleaster.
  
  
  METHODS
  The phenol and flavonoid contents were determined using spectrophotometric methods. Antioxidant and antiradical activities were determined using reducing power, ferric-reducing antioxidant potential (FRAP) and ability to scavenge DPPH radical assays.
  
  
  RESULTS
  Significant differences ( P < 0.05) were found in phenol and flavonoid contents and antioxidant activity among components of fruit and within various genotypes.
  
  
  CONCLUSIONS
  RESULTS indicated that oleaster has good fruit quality varying among different genotypes. Seeds of fruits have excellent antioxidant activity and phenolic contents in comparison to flesh and peel.
authors.affiliation: Department of Plant Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran.
authors.forename: Samaneh
authors.initials: S
authors.lastname: Faramarz
authors.affiliation: Department of Plant Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran.
authors.forename: Golamreza
authors.initials: G
authors.lastname: Dehghan
authors.affiliation: Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran ; Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Jahanban-Esfahlan
keywords: Antioxidants; Elaeagnus angustifolia L.; Free radicals; Function of genotype