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KMID : 0604520090350030251
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Journal of the Society of Cosmetic Scientists of Korea
2009 Volume.35 No. 3 p.251 ~ p.256
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Identification of Antioxidative Constituents from The Branches of Quercus gilva Blume
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Moon Mi-Youn
Baik Jong-Seok
Kim Sang-Suk
Jang Won-Jung
Kim Mi-Sun
Lee Nam-Ho
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Abstract
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Investigation of antioxidative constituents from the ethanol extract of Quercus gilva branches led to the identification of four compounds; catechin (1), epi-catechin (2), tyrosol (3) and tiliroside (4). The antioxidative activity was examined using DPPH radical and superoxide anion radical scavenging method. The isolated compounds 1, 2, 3 and 4 exhibited 94.2 %, 93.4 %, 33.6 % and 11.2 % scavenging activities respectively against DPPH radicals at the concentration of 100 μL/mL. As well, the compounds 1 ∼ 4 showed respectively 60.2 %, 35.1 %, 20.6 %, 4.5 % inhibition activities against superoxide anion radicals at 200 μL/mL. Interestingly, the compounds 1 ∼ 4 were isolated for the first time from Quercus gilva Blume.
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KEYWORD
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quercus gilva, DPPH radical scavenging activity, superoxide anion radical scavenging activity, catechin, tyrosol
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