carminic acid

Carminic acid was first synthesized by organic chemists in 1991.

The carminic acid can be extracted from the insect's body and eggs to make the red dye.

Addition of lime (calcium) can give carminic acid lakes a purple cast.

Carminic acid, the organic compound which gives carmine its color, was synthesized in 1991.

The insects produce carminic acid as an antipredator adaptation.

It uses carminic acid, acquired from its prey, as a defence against its own predators.

The insect produces carminic acid, which deters predation by other insects.

Carminic acid is the colouring agent in carmine.

Cochineal insects produce carminic acid to deter predation by other insects.

In general, cochineals are waxy gray insects, but the adult females turn bright red when crushed, due to their carminic acid content.

The scale insect Dactylopius coccus produces the brilliant red-coloured carminic acid to deter predators.

The chemical structure of carminic acid consists of a core anthraquinone structure linked to a glucose sugar unit.

Carmine may be prepared from cochineal, by boiling dried insects in water to extract the carminic acid and then treating the clear solution with alum.

Carmine dyes, which give crimson and related red and purple colors, are based on an aluminium and calcium salt of carminic acid.

Around 40,000 cochineal bugs are needed to produce just one pound of cochineal extract for the carminic acid, according to the Food and Agriculture Organization.

Carmine is a bright red dye derived from the aluminum salt of carminic acid, which naturally occurs in the scales of cochineal insects.

Besides grain, other seaborne exports included carminic acid from Polish cochineal, lumber and wood-related products such as ash, and tar.

Aluminum from the alum gives the traditional crimson color to carminic acid precipitates, which are called "carmine lakes" or "crimson lakes".

Strong red colors for eye products have been produced using the dye carmine, made from carminic acid extracted from the crushed bodies of the cochineal insect.

Carminic acid is extracted from the female cochineal insects and is treated to produce carmine, which can yield shades of red such as crimson and scarlet.

Carminic acid, typically 17-24% of dried insects' weight, can be extracted from the body and eggs, then mixed with aluminium or calcium salts to make carmine dye, also known as cochineal.

Carminic acid (CHO) is a red glucosidal hydroxyanthrapurin that occurs naturally in some scale insects, such as the cochineal, Armenian cochineal, and Polish cochineal.

For shades of purple, lime is added to the alum; thus, the traditional crimson color is guaranteed not only by carminic acid but also by choice of its chelating metal salt ion.

A reflectance spectroscopy study of one commercially available dye based on carminic acid found that it reflects mostly red light with wavelengths longer than about 603 nm, which provides its saturated red color.

The carmine dyestuff of Porphyrophora hamelii owes its red color almost entirely to carminic acid, making it difficult to distinguish chemically from the dyestuff of cochineal from the Americas.