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Anthocyanins are natural colorants which have gained a growing interest due to their extensive range of colors and beneficial health effects. The red and blue shades of 15 flowers were extracted with 1 % acidic methanol and these extracts were then screened for Total Anthocyanin content (TAC) using the pH method. In this paper the overall anthocyanin content of red and blue flowers was determined at room temperature (25°C). TAC accounts for the antioxidant activity of red and blue flowers. A quantitative relationship between acid-base and redox chemistry was also drawn.

Evaluation of Anthocyanin Content in Red and Blue Flowers