Research on the antioxidant properties of extracts from stemless carline thistle (Carlina acaulis l.), mountain arnica (Arnica montana l.) and pot marigold (Calendula officinalis l.)

Abstract

The intensity of lipid peroxidation (LPO) and oxidative modification of proteins (OMP) was investigated under the influence of 40 % and 70 % aqueous-ethanol plant extracts (PE) of the root of Carlina acaulis L., flowers of Arnica montana L. and Calendula officinalis L. on rat liver hepatocytes under conditions of free radical oxidation initiation in vitro. Investigated plant extracts reduce the formation of free radicals in proteins and lipids, which is evidently associated with the presence of phenolic compounds, flavonoids, and polyphenols in the extracts. The best results were demonstrated by the plant extracts of arnica and calendula. Arnica extract at a concentration of 40 % exhibited better antioxidant properties than its 70 % extract.