Antioxidant Effects of Viscum album L. Extracts by Extraction Conditions
2010
Lee, H.J., Korea Food Research Institute, Sungnam, Republic of Korea | Do, J.R., Korea Food Research Institute, Sungnam, Republic of Korea | Kwon, J.H., Kyungpook National University, Daegu, Republic of Korea | Kim, H.K., Korea Food Research Institute, Sungnam, Republic of Korea
This study was to investigate antioxidant effects of mistletoe extracts by extraction conditions. Electron donating ability of 50% ethanol extract had shown 92.27% at 50 mL/g, which was higher than 1.0% and 0.1% L-ascorbate solutions (p less than 0.05). SOD-like activities were the most effective in all samples at 50 mL/g, which were barely detectable. The total polyphenol contents of water extracts including all extracts were the highest at 50 mL/g extracts (p less than 0.05). The nitrite scavenging effects were different depending on pH value; they were decreased overall as pH value was increased. Especially, nitrite scavenging effects were the most effective in pH 1.2, which showed more than 80% (p less than 0.05). Tyrosinase-inhibitory activities ranged at fewer than 10%. These results indicate that mistletoe extracts are potential sources of natural antioxidant.
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