Antioxidant Activity Abutilon indicum Sweet and Mimosa pudica L. Extracts

Abstract

This study was aimed to investigate antioxidant activity of extracts from Abutilon indicum Sweet mix with Mimosa pudica L. an equal amount extracted by using different solvents include aqueous (AMA), 50% ethanol (AMHE) and 80% ethanol (AME). By The total flavonoid contents (TFC), total phenolic (TPC), ferric reducing antioxidant power by Ferric reducing antioxidant power (FRAP) assay, scavenging of 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ABTS+ radical scavenging assay respectively.  The results revealed that the AME had the highest total phenolic and total flavonoid contents of 0.061±0.002 mgGE g-¹Ext and 1.235±0.001 mgQE g^-1Ext and the highest antioxidant capacity than aqueous extract (AMA) and hydro-ethanolic extract (AMHE) by DPPH and ABTS assay with IC₅₀ of 1.099±0.020 and 0.230±0.018 mg mL^-1 respectively. AMA had the highest antioxidant capacity than AMHE and AME by FRAP assay FRAP values was 4.269±0.120 mgTE g^-1Ext. The results suggest that the Thai medicinal plant extracts had showed antioxidative effect; therefore, chemical compound, mechanism of action, and toxicity for new drug development should be further evaluated.