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Screening of Antioxidant Activity from Medicinal Plant Extracts  

Kwon, Ji-Wung (Medicinal Resources Research Center, Wonkwang University, College of Life Science and Natural Resources, Wonkwang University)
Lee, Eoh-Jin (Medicinal Resources Research Center, Wonkwang University, College of Life Science and Natural Resources, Wonkwang University)
Kim, Youn-Chul (Medicinal Resources Research Center, Wonkwang University, College of Pharmacy, Wonkwang University)
Lee, Hye-Suk (Medicinal Resources Research Center, Wonkwang University, College of Pharmacy, Wonkwang University)
Kwon, Tae-Oh (Medicinal Resources Research Center, Wonkwang University, College of Life Science and Natural Resources, Wonkwang University)
Publication Information
Korean Journal of Pharmacognosy / v.39, no.2, 2008 , pp. 155-163 More about this Journal
Abstract
This study was carried out to search the natural antioxidants from the 36 medicinal plants. $IC_{50}$ values of linoleic acid peroxidation inhibition to the BHA, BHT and ${\alpha}-tocopherol$ showed $7.2{\mu}g/ml$, $7.3{\mu}g/ml$, and $26.6{\mu}g/ml$, but hexane extract of Zingiber officinale showed $13.2{\mu}g/ml$, EtOAc extracts of Phellinus linteus, Morus alba, Zingiber officinale and butanol extract of Diospyros kaki showed $15.9{\mu}g/ml$, $16.9{\mu}g/ml$, $20.1{\mu}g/ml$, and $21.5{\mu}g/ml$ respectively. $IC_{50}$ values of DPPH radical scavenging activity of BHA, BHT and $\alpha$-tocopherol showed $14.9{\sim}27.7{\mu}g/ml$, but EtOAc extract of Paeonia suffruticosa showed the lowest $6.5{\mu}g/ml$ than those of other extracts, EtOAc extracts of Camellia sinensis, Salvia miltiorrhiz, and Phellinus linteus showed $8.0{\mu}g/ml$, $11.5{\mu}g/ml$, and $13.0{\mu}g/ml$ respectively.
Keywords
medicinal plant; DPPH radical scavenging activity; linoleic acid peroxidation inhibition;
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