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ANTHOCYANIN: RED CABBAGE pH INDICATOR
Pigment Molecule Affected By pH
Like other indicator dyes, including phenolphthalein, the structure of the Anthocyanin molecule changes in its acid or base form, turning bright pink in acids, reddish-purple in neutral solutions and green in alkaline or basic solutions.
Copyright:© 2003 Richard Megna - Fundamental Photographs
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