title: Antioxidant properties of Fusarium head blight-resistant and -susceptible soft red winter wheat grains grown in Virginia.
abstract: Fusarium head blight (FHB) has emerged as a major threat to wheat crops around the world, and it has been hypothesized that wheat antioxidants may play a role against Fusarium infections. The current study aimed to determine antioxidant properties of FHB-resistant wheat grains as compared to susceptible wheat. The wheat samples were collected from a single growing location (Warsaw, VA) and the same growing season. The results showed that both FHB-resistant and -susceptible wheat grains exerted strong radical scavenging activities against DPPH* radical [0.91-1.53 micromol of Trolox equivalents (TE)/g], peroxyl radical (15.5-24.5 micromol of TE/g), and hydroxyl radical (15.7-35.8 micromol of TE/g). Their total phenolic contents ranged from 888 to 1117 microg of gallic acid equivalents (GAE)/g. Five phenolic acids including ferulic, syringic, vanillic, caffeic, and p-coumaric acids were determined in soluble and insoluble fractions of wheat grains, altogether with a range of 219-389 microg/g. On average, the FHB-resistant wheat group showed significantly higher average values in DPPH* and hydroxyl radicals scavenging activities (30 and 41% higher, respectively) than the FHB-susceptible wheat group.
authors.affiliation: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA. kzhou@vt.edu
authors.forename: Kequan
authors.initials: K
authors.lastname: Zhou
authors.forename: Junjie
authors.initials: J
authors.lastname: Hao
authors.forename: Carl
authors.initials: C
authors.lastname: Griffey
authors.forename: Hyun
authors.initials: H
authors.lastname: Chung
authors.forename: Sean F
authors.initials: SF
authors.lastname: O'Keefe
authors.forename: Jianli
authors.initials: J
authors.lastname: Chen
authors.forename: Shelly
authors.initials: S
authors.lastname: Hogan
mesh_terms: D000975:Antioxidants / Q000494:pharmacology*; D016166:Free Radical Scavengers / Q000494:pharmacology; D005670:Fusarium; D062385:Hydroxybenzoates / Q000032:analysis; D010636:Phenols / Q000032:analysis; D010935:Plant Diseases / Q000382:microbiology*; D010936:Plant Extracts / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry* / Q000382:microbiology; D014908:Triticum / Q000737:chemistry / Q000382:microbiology*
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D062385:Hydroxybenzoates; D010636:Phenols; D010936:Plant Extracts; C017616:phenolic acid