Anthocyanins are water-soluble pigments that, depending on their pH, may appear red, yellow, orange, magenta, violet, purple, blue or black.
Anthocyanins are found within different plant organs; flowers, leaves, fruits, roots, tubers and grains. Food plants rich in anthocyanins include the blueberry, raspberry, black rice, and black soybean, among many others that are red, blue, purple, or black.
There are nearly 25 naturally occurring anthocyanidins, however more than 700 anthocyanins derivatives have been identified to date.[1:1]
The most prevalent anthocyanidins in nature are pelargonidin (Pg), cyanidin (Cy), peonidin (Pn), delphinidin (Dp), petunidin (Pt) and malvidin (Mv).[1:2]