Isolation of Antioxidant Compounds from Ethanol Extract of Temu Kunci (Boesenbergia pandurata Roxb.) Rhizomes

Abstract: Temu kunci (Beosenbergia pandurata Roxb.) is traditionally used to treat various diseases, and antioxidants are one of their utilization. The aim of this study was to isolate and identify the antioxidant compounds of temu kunci rhizomes. Temu kunci rhizomes was extracted by maceration with ethanol 95%. Etanol extract was then fractionated by liquid-liquid extraction, vacuum liquid chromatography, and classical column chromatography. Monitoring and testing the antioxidant activity used thin-layer chromatography (TLC) with 0.2% DPPH (1,1-diphenyl-2-picrylhydrazyl) reagent. Purity test was performed by a single development TLC using three different kinds of mobile system and two-dimensional TLC. Isolate BP-1 was isolated from the ethanol extract and active as an antioxidant. Based on ultraviolet-visible and infrared spectrums, isolate BP-1 was identified as flavanone in the absence of hydroxyl groups at the ortho position (o-diOH), with substitution of -OH at C5 and C7.
Keywords: Temu kunci, Boesenbergia pandurata, DPPH, Antioxidant
Penulis: Lia Marliani, Dadang Juanda, Arif Rubianto
Kode Jurnal: jpfarmasidd130425

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