Use as environmental pH indicator

Anthocyanins may be used as pH indicators because their color changes with pH; they are red or pink in acidic solutions (pH < 7), purple in neutral solutions (pH ? 7), greenish-yellow in alkaline solutions (pH > 7), and colorless in very alkaline solutions, where the pigment is completely reduced.

Biosynthesis

#Anthocyanin pigments are assembled like all other flavonoids from two different streams of chemical

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