1996 Volume 60 Issue 10 Pages 1714-1716
Five antioxidative compounds were isolated from dichloromethane extracts of kokuto, a kind of non-centrifugal sugar, and identified by spectral analysis as syringaresinol (1), medioresinol (2), coniferyl alcohol (3), sinapyl alcohol (4), and 3-hydroxy-1-(4-hydroxy-3, 5-dimethoxyphenyl)-1-propanone (5). The antioxidative activities of 1 as determined by the ferric thiocyanate method and by the thiobarbituric acid (TBA) method were respectively superior to and similar to those of butylated hydroxyanisole (BHA). 2 and 5 had stronger activities than BHA, while 3 and 4 respectively had almost the same and weaker activities than BHA.
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