<i>In-vitro</i> Antioxidant Activities of the Ethanolic Extracts of Some Contained-Allantoin Plants.

Abstract

It has been investigated the <i>in-vitro</i> antioxidant properties of ethanol extracts of the contained-allantoin plants in this study. Contained-allantoined plant samples <i>Plantago lanceolata, Plantago major, Robinia pseudoacacia, Platanus orientalis</i> and <i>Aesculus</i><i>hippocastanum</i> were tested at different concentrations. The antioxidant activities of plant samples were analysed by 1,1- diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method, cupric reducing antioxidant capacity (CUPRAC), reducing power assay and β-carotene bleaching method. <i>Plantago major</i> plant showed the highest antioxidant capacity compared to other plant extracts in results of the <i>in-vitro</i> assays including 1,1- diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method with 90.25 %, cupric reducing antioxidant capacity (CUPRAC) with 1.789 %, reducing power assay (FRAP) with 1.321 % and β-carotene bleaching method with 78.01 % in 1 mg/mL. The lowest antioxidant activity was determined in <i>Robinia pseudoacacia</i> plant. In conclusion, allantoin shows antioxidant properties and it has the positive effect on total antioxidant capacity.