Antioxidative activity of Geranium macrorrhizum

G. Miliauskas, T.A. van Beek, P.R. Venskutonis, J.P.H. Linssen, P. de Waard

Research output: Contribution to journalArticleAcademicpeer-review

38 Citations (Scopus)

Abstract

The composition of radical-scavenging compounds from Geranium macrorrhizum leaves was analyzed and the antioxidative activities of various extracts was determined. Seven compounds, namely gallic acid, ellagic acid, 4-galloyl quinic acid, the flavonoid quercetin and three of its glycosides, quercetin-3-beta-glucopyranoside, quercetin-3-beta-galactopyranoside and quercetin-4'-beta-glucopyranoside were isolated and identified in the various fractions. The radical-scavenging activity of the isolated compounds was measured using DPPHcircle and ABTS(circle+) scavenging assays and compared with the activity of rosmarinic acid. Quercetin-3-glucopyranoside and quercetin-3-galactopyranoside showed the highest antioxidative capacities. Antioxidative activities of all plant fractions were assessed by model system tests (superoxide anion and hydrogen peroxide scavenging) and by oxidation tests (beta-carotene bleaching, peroxide value, UV absorbance and headspace-gas chromatography hexanal determination). The ethanol-butanol fraction of the plant possessed the highest activity in most of the tests.
Original languageEnglish
Pages (from-to)253-261
JournalEuropean Food Research and Technology
Volume218
Issue number3
DOIs
Publication statusPublished - 2004

Keywords

  • radical scavenging activity
  • plant-extracts
  • rapeseed oil
  • flavonoids
  • l.
  • identification
  • lithuania
  • tannins
  • leaves
  • pomace

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