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This study evaluates the effects of traditional preparation on the total phenol content and in vitro antioxidant activity of Fallopia multiflora Thunb.. The experimental results show that the total phenol content calculated with gallic acid (GAE) of Fallopia multiflora Thunb. increased during preparation processing. The Fallopia multiflora Thunb. after preparation had a total phenol content of 22.73 ± 0.21 mg GAE/g, about 3% higher than the raw sample (22.03 ± 0.40 mg GAE/g). The preparation processing also significantly increased the antioxidant activity of Fallopia multiflora Thunb.. The concentration of extract, which could neutralize 50% of the free radicals generated from 2.2-diphenyl-1-picrylhydrazyl of medicinal materials, after processing was 53.71 ± 0.44 μg/ml, about 2.3 times lower when compared to raw pharmaceutical materials (124,38 ± 0,56 μg/ml).

Effect of Traditional Preparation Processing on the Total Phenol Content and Antioxidant Activity of Fallopia multiflora Thunb.