Identification, quantitative determination, and antioxidative activities of chlorogenic acid isomers in prune (Prunus domestica L. )

J Agric Food Chem. 2000 Nov;48(11):5512-6. doi: 10.1021/jf000422s.


Neochlorogenic acid (3-CQA) and cryptochlorogenic acid (4-CQA), isolated from prune (Prunus domestica L.), were identified by NMR and MS analyses. In addition, the quantity of chlorogenic acid isomers in prune were measured by HPLC. These isomers, 3-CQA, 4-CQA, and chlorogenic acid (5-CQA), were contained in the ratio 78.7:18. 4:3.9, respectively. 4-CQA was identified and quantified in prune for the first time, and relatively high amounts of this isomer were characteristic. Antioxidative activities of the chlorogenic acid isomers, such as scavenging activity on superoxide anion radicals and inhibitory effect against oxidation of methyl linoleate, were also evaluated. Each isomer showed antioxidative activities which were almost the same.

MeSH terms

  • Antioxidants / analysis*
  • Antioxidants / chemistry
  • Antioxidants / pharmacology
  • Chlorogenic Acid / analogs & derivatives*
  • Chlorogenic Acid / analysis*
  • Chlorogenic Acid / chemistry
  • Chlorogenic Acid / pharmacology
  • Food Preservation*
  • Free Radical Scavengers / analysis
  • Free Radical Scavengers / pharmacology
  • Fruit / chemistry*
  • Isomerism
  • Models, Molecular
  • Molecular Conformation
  • Superoxides / chemistry


  • Antioxidants
  • Free Radical Scavengers
  • Superoxides
  • Chlorogenic Acid