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KMID : 1134820080370101318
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Journal of the Korean Society of Food Science and Nutrition
2008 Volume.37 No. 10 p.1318 ~ p.1322
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Development of Extracts of Lycii folium Having High Antioxidant Activity
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Kim Tae-Su
Park Won-Jeong
Ko Sang-Beom
Kang Myung-Hwa
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Abstract
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The aim of this study was to analyze the antioxidant properties of Lycii folium extracts prepared from different solvents. Lycii folium were extracted with water, 80% ethanol (80% EtOH), 80% methanol (80% MeOH) and 100% methanol (100% MeOH) in water bath at 40℃. The antioxidant activity of the extracts was evaluated using DPPH, hydroxyl and hydrogen radical scavenging activities, and SOD-liked activity. Total phenolic acid contents were 1.085 ㎎/mL in 100% MeOH, 1.382 ㎎/mL in 80% EtOH, 1.420 ㎎/mL in 80% MeOH and 1.084 ㎎/mL in water. DPPH radical scavenging activity of the extracts were 65.60% in 80% EtOH, 56.80% in 80% MeOH, 83.85% in 100% MeOH and 54.65% in water. Hydroxyl radical scavenging activities were 66.65% in 100% MeOH, 73.13% in 80% ethanol, 73.58% in 80% MeOH and 70.73% in water. Hydrogen radical scavenging activity of the extracts prepared from Lycii folium were 11.70% in 100% MeOH, 33.73% in 80% EtOH, 35.40% in 80% MeOH and 23.86% in water. SOD-liked activity of the extracts prepared from Lycii folium was 71.58% in 100% MeOH, 74.29% in 80% EtOH, 88.46% in 80% MeOH and 67.47% in water. Our result showed that Lycii folium extracts prepared from 80% methanol were found to be promising biomaterials with antioxidant effects.
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KEYWORD
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antioxidant, Lycii folium, SOD-liked activity, DPPH
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