title: Antioxidant activity of minor components of tree nut oils.
abstract: The antioxidative components of tree nut oils were extracted using a solvent stripping process. Tree nut oil extracts contained phospholipids, sphingolipids, sterols and tocopherols. The chloroform/methanol extracted oils had higher amounts of phenolic compounds than their hexane extracted counterparts. The antioxidant activity of tree nut oil minor component extracts were assessed using the 2,2-azino-bis (3-ethylbenzthiazoline sulphonate) (ABTS) radical scavenging activity, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging capacity, β-carotene bleaching test, oxygen radical absorbance capacity (ORAC) and photochemiluminescence inhibition assays. Results of these studies demonstrated that extracts of chloroform/methanol extracted oils possessed higher antioxidant activities than extracts of their hexane extracted counterparts. Meanwhile the extract of chloroform/methanol extracted pecan oil possessed the highest antioxidant activity.
authors.affiliation: Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X9.
authors.forename: H
authors.initials: H
authors.lastname: Miraliakbari
authors.affiliation: Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X9. Electronic address: fshahidi@mun.ca.
authors.forename: F
authors.initials: F
authors.lastname: Shahidi
keywords: 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging capacity; Antioxidant; Oxygen radical absorbance capacity (ORAC); Photochemiluminescence inhibition assay; Tree nut oil extracts; Trolox equivalent antioxidant capacity (TEAC); β-Carotene bleaching test