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KMID : 0861020160310060021
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Korea Journal of Herbology
2016 Volume.31 No. 6 p.21 ~ p.28
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Antioxidant Activities of Water Extracts from Different Parts of Lycopus lucidus Turcz. ex Benth.
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Song Youn-Jin
Chang Jun-Pok
Yoo Ji-Hyun
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Abstract
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Objectives : This study was performed to investigate the antioxidant activity of water extracts from Lycopus lucidus Turcz. ex Benth. leaves, stems and roots at the 100 ㎍/㎖ concentration.
Methods : The different part of Lycopus lucidus Turcz. ex Benth. extract was prepared using water. The antioxidant activities of polyphenol contents, total flavonoid contents, DPPH(1,1-diphenyl-2-picrylhydrazyl) free-radical scavenging activity, SOD like activity, hydroxyl radical, ABTS(2,2`-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), Fe2+ chelating, and nitrite scavenging activity.
Results : The total polyphenol and total flavonoid content of leaves were the highest at 221.85 ㎍/㎎ and 794.13 ㎍/㎎, respectively. Electron donating ability was the 79.68% in the water extract from leaves. The ABTS radical scavenging activity of the hot extracts, leaves ≫ roots > stems was higher in the order. It was shown the highest at 94.53% in the water extract from leaves, which showed a value equal to 94.7% of ascorbic acid. The hydroxyl radical scavenging activity was the highest at 8.07% in the water extract from leaves. SOD like activity and Fe2+chelating activity were leaves of 12.3% and 27%, respectively, which were much higher than those of any other parts. The nitrite scavenging ability of extracts was increased at pH 2.5, and those was the highest in leaves of 83.03%. Its were more than twice the 41.61% of BHT.
Conclusion : The results suggest that Lycopus lucidus Turcz. ex Benth. can be used as nutraceutical foods and natural antioxidant.
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KEYWORD
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Antioxidant, Lycopus lucidus Turcz. ex Benth. Water Extract, Different part
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