Abstract
Different extracts of U. tomentosa were tested in vitro for their antioxidant activity utilizing tert -butyl-hydroperoxide-initiated chemiluminescence in rat liver homogenates. Methanol fractions of both stem-bark and roots were capable of exerting antioxidant activity by this technique. The presence of different concentrations of bark and root methanol extracts also prevented TBARS production and free radical-mediated DNA-sugar damage. © 1997 John Wiley & Sons, Ltd.
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