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Studies on the Antioxidative Ability of Methanol and Water Extracts from Orostachys japonicus A. Berger According to Harvest Times  

Choi, Sun-Young (Dept. of Home Economics Education, Education Research Institute, Gyeonsang National University)
Chung, Mi-Ja (Dept. of Biotechnology and Engineering, Kangwon National University)
Sung, Nak-Ju (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University)
Publication Information
The Korean Journal of Food And Nutrition / v.21, no.2, 2008 , pp. 157-164 More about this Journal
Abstract
This study examined the antioxidant activity of methanol and water extracts from Orostachys japonicus A. Berger according to harvest times, by measuring electron donating ability(EDA), reducing power, superoxide dismutase(SOD)-like activity, thiobarbituric acid reactive substances(TBARS) and antioxidant activity within a linoleic acid emulsion. EDA increased proportionally with the extract concentration and the methanol extract had slightly stronger effects than the water extract. And reducing power and SOD-like activity were highest in the methanol extract. Overall, based on the data, the methanol extract of O. japonicus A. Berger harvested during $August{\sim}October$ presented the highest level of antioxidative activity and may be a good candidate as a natural antioxidant source.
Keywords
Orostachys japonicus; electron donating ability; reducing power; SOD-like activity;
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Times Cited By KSCI : 6  (Citation Analysis)
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