Antioxidant activity of Galinsoga parviflora and Galinsoga quadriradiata

M. Derwińska; A. Bazylko; J. Kowalski

doi:10.1055/s-2006-949896

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Planta Med 2006; 72 - P_096
DOI: 10.1055/s-2006-949896

Antioxidant activity of Galinsoga parviflora and Galinsoga quadriradiata

M Derwińska ¹, A Bazylko ¹, J Kowalski ¹

¹Departament of Pharmacognosy,Medical University,1 Banacha St, 02–097 Warsaw, Poland

Congress Abstract

Galinsoga sp. is native to Mexico and South America. It has become naturalized and occurs as widespread weed in different areas whole over the world. It grows in gardens, crop fields and along roadsides. Galinsoga sp. is used in traditional medicine in Poland for treatment dermatitis.

The aim of our study was to determine antioxidant activity of different fractions of Galinsoga parviflora and Galinsoga quadriradiata. Water-methanolic extracts (50:50) were fractionated successively by SPE-columns with water, 20% methanol, 50% methanol, 70% methanol and pure methanol at the end. Antioxidant properties of each fraction were tested using three assays: DPPH photometric assay, xanthine oxidase assay and linoleic acid peroxidation assay.

Mentioned above assays demonstrated the 50% methanolic fractions and 20% methanolic fractions of both species were the most active. Phytochemical determinations using TLC and HPLC showed that those fractions were rich of flavonoids.