Antioxidant activity
Total phenolic content
The TPC of each herbal tea infusion was measured using the
method described by K¨ahk¨onen et al.14 The herbal tea infusion
(3 mL) was added to 1.5 mL of Folin–Ciocalteu’s phenol reagent
(10% v/v) and was allowed to react for 5 min. Next, 1.2 mL of 7.5%
w/v sodium carbonate was added to the reaction mixture and
incubated for 30 min. The resulting blue complex was measured
at765 nm,andTPCwasexpressed asmg g−1 gallic acid equivalents
(GAE). Measurements were performed in triplicate.