Cyanidin is a natural
organic compound. It is a particular type of
anthocyanidin (
glycoside version called anthocyanins). It is a pigment found in many red berries including
grapes,
bilberry,
blackberry,
blueberry,
cherry,
cranberry,
elderberry,
hawthorn,
loganberry,
açai 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-purple 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. In certain fruits, the highest concentrations of cyanidin are found in the seeds and skin.