Antioxidant Effects of Secondary Metabolites from Geranium psilostemon

Research output: Contribution to journalArticle


An investigation was made of the effects on endogenous antioxidant enzyme activities and H2O2-induced lipid peroxidation inhibition in human red blood cells of the crude MeOH extract and its EtOAc, n-BuOH, and H2O sub-extracts obtained from aerial parts of Geranium psilostemon Ledeb., as well as compounds isolated from the most active EtOAc extract. Gallic acid (1), methyl gallate (2), pusilagin (3), 1,3,6-tri-O-galloyl-beta-glucopyranoside (4), 1,2,3,4,6-penta-O-galloyl-beta-glucopyranoside (5), kaempferol (6), quercetin (7), kaempferol 7-O-alpha-rhamnopyranoside (8), and quercetin 7-O-alpha-rhamnopyranoside (9) were isolated from the aerial parts of the title plant, and their structures identified from spectroscopic (UV, 1D- and 2D- NMR) and spectrometric (TOF-MS) data. All extracts and isolated compounds inhibited H2O2-induced lipid peroxidation and also enhanced the activity of superoxide dismutase (SOD) and catalase (CAT).


  • Didem Sohretoglu
  • Suna Atasayar Sabuncuoglu
  • M. Koray Sakar
  • Hilal Ozgunes
  • Olov Sterner
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Organic Chemistry


  • pentagalloyl glucose, trigalloyl glucose, SOD, CAT, antioxidant, Geranium, Geraniaceae
Original languageEnglish
Pages (from-to)899-902
JournalNatural Product Communications
Issue number6
Publication statusPublished - 2010
Publication categoryResearch

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Organic chemistry (S/LTH) (011001240)