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KMID : 0903520050480040435
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2005 Volume.48 No. 4 p.435 ~ p.439
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Antioxidant Activity on Ethanol Extract from Boiled-water of Hizikia fusiformis
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Park Ki-Eui
Jan Mi-Soon
Kim Yeon-Kye
Seo Young-Wan
Park Hee-Yeon
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Abstract
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Antioxidant activity of the ethanol extract from boiled-water of Hizikia fusiformis (EBH) were compared with those of BHA, L-ascorbic acid, gallic acid, caffeic acid and (-)-catechin. The free radical scavenging ability against DPPH (1,1-diphenyl-2-picrylhydrazyl), authentic peroxynitrite and reducing power were measured as indices of antioxidant activity. EBH showed the potent DPPH radical and peroxynitrite scavenging activities, showing 85.23 and 96.97% at final concentration of 1000 μg/ml, respectively. The reducing power increased with the increasing amount of EBH (final concentration of 1, 10, 100 and 1000 μg/ml). Total phenolic content of EBH was 588 mg (-)-catechin/g at the final concentration 1000 μg/ml. Total phenolic contents correlated with DPPH radical scavenging activity (R2= 0.766) and reducing power (R2= 0.944). These results suggested that EBH could be a natural antioxidative source containing antioxidative components.
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KEYWORD
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antioxidant, DPPH, Hizikia fusiformis, peroxynitrite, reducing power
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