Copigmentation
Encyclopedia
Copigmentation is a phenomenon where pigmentation due to anthocyanidin
s is reinforced by the presence of other colorless flavonoid
s known as cofactors or “copigments”. There is a formation of a non covalently linked complex
. An example is the bluish purple flowers of the Japanese garden iris (Iris ensata).
Part of the color of a wine
can be due to the copigmentation phenomenon. It is a phenomenon observed in the berries color of the porcelain berry (Ampelopsis brevipedunculata
).
Anthocyanidin
Anthocyanidins are common plant pigments. They are the sugar-free counterparts of anthocyanins based on the flavylium ion or 2-phenylchromenylium, which is a type of oxonium ion . They form a large group of polymethine dye. In particular anthocyanidins are salt derivatives of the...
s is reinforced by the presence of other colorless flavonoid
Flavonoid
Flavonoids , are a class of plant secondary metabolites....
s known as cofactors or “copigments”. There is a formation of a non covalently linked complex
Complex (chemistry)
In chemistry, a coordination complex or metal complex, is an atom or ion , bonded to a surrounding array of molecules or anions, that are in turn known as ligands or complexing agents...
. An example is the bluish purple flowers of the Japanese garden iris (Iris ensata).
Part of the color of a wine
Wine color
The color of wine is one of the most easily recognizable characteristics of wines. Color is also an element in wine tasting since heavy wines generally have a deeper color. The accessory traditionally used to judge the wine color was the tastevin, a shallow cup allowing to see the color of the...
can be due to the copigmentation phenomenon. It is a phenomenon observed in the berries color of the porcelain berry (Ampelopsis brevipedunculata
Ampelopsis brevipedunculata
Ampelopsis brevipedunculata , the porcelain berry, is an ornamental plant, native to temperate areas of Asia...
).