Cyanidin

Cyanidin is a natural organic compound. It is a particular type of anthocyanidin (not to be confused with anthocyanins which are glycosides of anthocyanidins). It is a pigment found in many red berries including but not limited to grapes, bilberry, blackberry, blueberry, cherry, cranberry, elderberry, hawthorn, loganberry, acai berry and raspberry. It can also be found in other fruits such as apples and plums, and in red cabbage and red onion. It has a characteristic reddish-orange color, though this can change with pH; solutions of the compound are red at pH < 3, violet at pH 7-8, and blue at pH > 11. The highest concentrations of cyanidin are found in the seeds and skin of a given fruit.