ANTIOXIDANT FREE RADICAL SCAVENGING PROPERTIES OF A HEMEPARASITIC MISTLETOE PLANT, DENDROPHTHOE FALCATA (L.F.) ETTINGSH INFESTED ON ARTOCARPUS HETEROPHYLLUS HOST TREE.
U.S. Priya and R. Neelamegam*
Studies on free radical scavenging activity of ethanol extract of Dendrophthoe falcata samples collected from
Artocarpus heterophyllus indicate their potential on DPPH, NO and SO free radical scavenging activity. In general,
the ethanol extracts of Dendrophthoe falcata samples exhibit less scavenging activity on DPPH, NO and SO
radicals when compared to standard. Dendrophthoe falcata sample ethanol extracts shows significant variations in
the DPPH, NO and SO radical scavenging activities. Dendrophthoe falcata tender shoot and bark samples show
higher FRAP than the standard at all concentrations tested as compared to leaf sample. The ethanol extracts exhibit
significant concentration dependent scavenging effects on free radicals and FRAP. The results indicate that
Dendropthoe falcata ethanol extracts could be a source of potent natural antioxidants which act as free radical
Scavengers and Fe-chelators, and these properties of health benefits are host dependent.
Keywords: Hemiparasite, Mistletoe, Dendrophthoe falcata, Artocarpus heterophyllus, Free radical scavenging activity, DPPH, NO, SO, FRAP.
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