Free-radical-scavenging and antioxidant activities of secondary metabolites from reddened cv. Annurca apple fruits

J Agric Food Chem. 2006 Feb 8;54(3):803-9. doi: 10.1021/jf052632g.

Abstract

Forty-three secondary metabolites were isolated and characterized from cv. Annurca apple fruit, an apple variety cultivated in the south of Italy. This apple cultivar undergoes a typical reddening treatment after collection. All of the compounds were characterized on the basis of their spectroscopic data. The compounds were tested for their radical-scavenging and antioxidant activities by measuring their capacity to scavenge DPPH* (2,2'-diphenyl-1-picrylhydrazyl radical), H2O2, and NO (nitric oxide) and to inhibit the formation of methyl linoleate conjugated diene hydroperoxides or TBARS (thiobarbituric acid reactive species).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / pharmacology*
  • Biphenyl Compounds
  • Flavonoids / analysis*
  • Flavonoids / pharmacology
  • Free Radical Scavengers / pharmacology*
  • Fruit / chemistry*
  • Fruit / metabolism*
  • Hydrogen Peroxide
  • Lipid Peroxides / chemistry
  • Malus / chemistry*
  • Nitric Oxide
  • Oxidation-Reduction
  • Phenols / analysis*
  • Phenols / pharmacology
  • Picrates
  • Polyphenols
  • Thiobarbituric Acid Reactive Substances / analysis
  • Thiobarbituric Acid Reactive Substances / chemistry

Substances

  • Antioxidants
  • Biphenyl Compounds
  • Flavonoids
  • Free Radical Scavengers
  • Lipid Peroxides
  • Phenols
  • Picrates
  • Polyphenols
  • Thiobarbituric Acid Reactive Substances
  • methyl linoleate hydroperoxide
  • Nitric Oxide
  • Hydrogen Peroxide
  • 1,1-diphenyl-2-picrylhydrazyl