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KMID : 0616120120430040274
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Korean Journal of Pharmacognosy
2012 Volume.43 No. 4 p.274 ~ p.278
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Antioxidant Constituents of the Aerial Parts of Curcuma longa
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Ahn Dal-Rae
Lee Eun-Byeol
Ahn Min-Sil
Lim Hye-won
Xing Ming Ming
Tao Chao
Yang Jae-Heon
Kim Dae-Keun
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Abstract
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As part of ongoing study focused on the discovery of natural antioxidants from Korean plants by measuring the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging effect and superoxide quenching activity, ethanol extract of the aerial parts of Curcuma longa (Zingiberaceae) was found to show potent antioxidant activities. Subsequent activity-guided fractionation of the ethanol extract led to the isolation of two phenolic compounds, 1,2,3,4,6-penta-O-galloyl-β-D-glucopyranoside (1) and gallic acid (2), as antioxidant compounds. Their structures were elucidated by spectroscopic studies. Compounds 1 and 2 were isolated for the first time from this plant. These compounds showed the significant antioxidative effects during the DPPH free radical scavenging test, and the riboflavin- and xanthine-originated superoxide quenching activity tests.
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KEYWORD
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Curcuma longa , Zingiberaceae , DPPH , Superoxide quenching activity
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