Abstract: Twenty kinds of herbal tea purchased from the local market were assessed for their antioxidant activities including DPPH radical scavenging activity, oxygen radical absorbance capacity (ORAC) and Fe3+ reducing power. Results indicated that all 20 kinds of herbal tea had antioxidant capacities in different antioxidant evaluation systems. In addition, a fuzzy comprehensive evaluation model was established to evaluate their comprehensive antioxidant capacity and five kinds of herbal tea with the highest comprehensive antioxidant capacity were all from two locally famous traditional herbal tea shops. A non-linear correlation between total phenol content and comprehensive antioxidant capacity of twenty kinds of herbal tea was achieved.

Key words: antioxidant activity, herbal tea, total phenol content, content, fuzzy comprehensive evaluation