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KMID : 0620720050110040229
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Natural Product Sciences
2005 Volume.11 No. 4 p.229 ~ p.232
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Antioxidant Constituents from Portulaca oleracea
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Choi Bong-Rak
Hong Seong-Soo
Han Xiang Hua
Hwang Ji-Sang
Lee Min-Hee
Hur Jae-Doo
Hwang Bang-Yeon
Ro Jai-Seup
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Abstract
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The repeated column chromatographic separation of the EtOH extract of Portulaca oleracea afforded seven compounds. The structures of these isolates were identified as bergapten (1), umbelliferone (2), daidzein (3), genistein (4), protocatechuic acid (5), ferulic acid (6), and gallic acid (7) by the analysis of physico-chemical and spectral data. Their antioxidant effect on free radical scavenging was evaluated in the DPPH assay.
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KEYWORD
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Portulaca oleracea, Portulacaceae, DPPH assay, antioxidant effect
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