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The antioxidant activity against O2•-, H2O2, HOCl in control (distilled water), PHGG, catechins and vitamin C is demonstrated. Catechins, vitamin C and PHGG significantly reduced O2•-, H2O2, HOCl activity in an order of catechins > vitamin C > PHGG > control. Each test was performed 6 times. * P < 0.05 when compared to the control value.
