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KMID : 1007519940030040233
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Food Science and Biotechnology
1994 Volume.3 No. 4 p.233 ~ p.237
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Antioxidative Activity of Crysanthemin in Black Rice Hulls
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Choi, Sang-Won
Kang, Woo-Won/Osawa, T./Kawakishi, S.
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Abstract
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Antioxidative activity of black rice hull (Oryza sutiva L., Indica type) extract was determined by the thiocyanate method using linoleic acid system. A 0.5% trifluoroacetic acid (TFA)-95% ethanol extracts of black rice hull, having strong antioxi-dative activity were fractionated by an Amberlite XAD-7 column chromatography and preparative HPLC techniques, and the active component was characterized by FAB-MS, ¹H-NMR, and ^(13)C-NMR spectrometry. The active components were found to be anthocyanin pigments, and one of them exhibiting antioxidant property as strong as a-tocopherol was identified as crysanthemin (cyanidin 3-O-β-D-glucoside).
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