Stevia addition to formulated mixtures
ensured higher polyphenolic content. Dried carrot exhibited the highest (0.988 g/g) and liquorice the
lowest (0.087 g/g) content of total sugars but it contributed to the sweetness with 574.48 mg/L of glycyrrhizic
acid derivatives. Plain blackberry leaf extract exhibited cytotoxic and antioxidative activity on
human colon cancer cells. Formulated mixtures exhibited improved flavour profile and balanced sweetness
in relation to plain blackberry leaf infusion.