Loranthus pulverulentus: A potent source of natural antioxidants and alternative medicine

This study was designed to evaluate the antioxidant potential of loranthus pulverulentus. stem bark,leaves,and seeds of loranthus pulverulentus were extracted in methanol:water (90: 10) and partitioned with n-hexane,chloroform,ethyl acetate,and n-butanol successively using partition chromatography. total phenolic contents and antioxidant potential were checked using standard protocols. total phenolic contents of all extracts were determined,using folin-ciocalteu reagent,and ranged between 151 ± 2.1 and 396 ± 1.6 for stem bark,137 ± 0.9 and 430 ± 2.2 for,and 39 ± 0.6 and 231 ± 1.7 for seeds. the antioxidant potential of extracts was evaluated; namely,dpph,frap,and total antioxidant models. the ethyl acetate extract of stem-bark,leaves,and seeds showed the highest activity in dpph (94.5 ± 2.1%,96.30 ± 0.9%,and 92.30 ± 1.1%,ic 50 15.9 ± 0.5 g,14.5 ± 0.8,and 102.7 ± 1.3,resp.),frap (7.7 ± 0.6,7.5 ± 0.7 and 6.6 ± 0.7,resp.),and total antioxidant (0.95 ± 0.09,1.19 ± 0.09,and 0.686 ± 0.08,resp.). strong correlations were observed between total phenols versus total antioxidant activity,dpph,and frap with r 2 values ranging from 0.8185 to 0.9951 (stem-bark),0.6728 to 0.8648 (leaves),and 0.8658 to 0.9910 (seed) which indicated that phenolic contents are the major constituents responsible for antioxidant activity. © 2013 muhammad asam raza et al.