Antioxidant properties of Fusarium head blight-resistant and -susceptible soft red winter wheat grains grown in Virginia

J Agric Food Chem. 2007 May 2;55(9):3729-36. doi: 10.1021/jf070147a. Epub 2007 Apr 6.

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.

Publication types

  • Comparative Study

MeSH terms

  • Antioxidants / pharmacology*
  • Free Radical Scavengers / pharmacology
  • Fusarium*
  • Hydroxybenzoates / analysis
  • Phenols / analysis
  • Plant Diseases / microbiology*
  • Plant Extracts / chemistry*
  • Seeds / chemistry*
  • Seeds / microbiology
  • Triticum / chemistry
  • Triticum / microbiology*

Substances

  • Antioxidants
  • Free Radical Scavengers
  • Hydroxybenzoates
  • Phenols
  • Plant Extracts
  • phenolic acid