ANTIOXIDATIVE PROPERTIES OF ALCHEMILLA-XANTHOCHLORA, SALVIA-OFFICINALIS AND SOLIDAGO-VIRGAUREA WATER EXTRACTS

Water extracts of Alchemilla xanthochlora, Salvia officinalis and Soli dago virgaurea were found to have significant antioxidative properties . These properties were tested as the ability to inhibit lipid peroxid ation of phosphatidylcholine liposomes as a model system of biological membranes. The hydrogen donating ability of these extracts was also d emonstrated using another system containing 1,1'-diphenyl-2-picrylhydr azyl radical and significant OH radicals scavenging activity using ESR spectroscopy. It was thus assumed that the potent antioxidative abili ties were caused by the high levels of reducing substances in these wa ter extracts as well as by their ability to scavenge OH radicals.