DPPH Radical Scavenging Property of Methanol Leaf Extract from Pogostemon quadrifolius (Benth.)

Abstract

The study was conducted to evaluate the DPPH scavenging property of leaf extracts of plant P. quadrifolius (Benth.). In this study, plant leaves were solvent extracted by soxhlet method using petroleum ether, chloroform and methanol sequentially. The extracts were then analyzed for DPPH scavenging properties. Among the three extracts used, only methanol extract has exhibited the DPPH scavenging property. The results showed that the methanol extract of P. quadrifolius (Benth.) leaf exhibit DPPH scavenging property with IC 50 14.5±1.05 µg mLG 1 . The phytochemical analysis indicated that the methanol extract is a rich source of phenolic compounds and this may be the reason for DPPH radical scavenging property of this extract.