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Antioxidant activity of the tea brews measured with the ORAC assay. Bars are coloured according to the type of tea (brown = black tea; green = green tea; yellow = yellow tea; rust = oolong tea; grey = white tea) and to the type of brew (light shade = cold brew; dark shade = hot brew). Letters above the bars indicate homogeneous sub-classes resulting from Tukey’s post hoc multiple comparison test (p < 0.05).
