title: Antiradical activity of different parts of Walnut (Juglans regia L.) fruit as a function of genotype.
abstract: The objective of this work was to analyse phenolic compounds and antiradical capacity of different parts of walnut fruit among six genotypes of Juglans regia L. Therefore, total phenolic and flavonoid content were determined and methanolic extracts of walnut genotypes were considered by the reducing power, DPPH (2,2-diphenyl-1-picrylhydrazyl), superoxide anion and nitric oxide radical scavenging. Significant differences were found in phenolic content and radical scavenging capacity of different parts of fruits and among various genotypes. High correlation coefficient (R(2)=0.81) was observed between phenol content and radical scavenging activity, but this was not always true (R(2)=0.01). These results demonstrated that walnut genotypes have different phenolic compounds and phenolic compounds have different radical scavenging power. The differences of phenolic compounds were confirmed by using high performance liquid chromatography (HPLC).
authors.affiliation: Department of Biology, Faculty of Science, Urmia University, Serow Road, Urmia, Iran. akbarivali.bio85@yahoo.com
authors.forename: Vali
authors.initials: V
authors.lastname: Akbari
authors.forename: Rashid
authors.initials: R
authors.lastname: Jamei
authors.forename: Reza
authors.initials: R
authors.lastname: Heidari
authors.forename: Ali Jahanban
authors.initials: AJ
authors.lastname: Esfahlan
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D005609:Free Radicals / Q000737:chemistry; D005638:Fruit / Q000737:chemistry / Q000235:genetics; D031324:Juglans / Q000737:chemistry* / Q000235:genetics*; D010636:Phenols / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D005609:Free Radicals; D010636:Phenols; D010936:Plant Extracts