DPPH radical scavenging activity of methanol extract of Indonesian Etlingera elatior flower and leave

This research goal was to investigate the antioxidant activity of methanol extract of kecombrang (Etlingera elatior) flowers and leaves. Extraction processes by using maceration technique. Dried samples were extracted by using commercial methanol for 48 h. Antioxidant activity was measured as DPPH radical scavenging activity. The results showed that IC50 of the methanol extract of kecombrang shoot leaves was 14.53 ppm; the methanol extract of kecombrang mature leaves was 28.97 ppm; and the methanol extract of kecombrang flowers was 105.90 ppm. It is indicated that the extracts can be used as an agent to scavenging free radicals.