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The genus name Rubia derives from the Latin ruber meaning "red", as the roots of some species (mainly Rubia tinctorum) have been used since ancient times as a vegetable red dye. The specific epithet is the Latin adjective peregrinus, -a, -um meaning "foreign, alien, exotic, strange."
Terraria: A bright-green metal found deep beneath the jungle, implied to be the toughest ore that can be mined from the ground (topped only by Luminite, a material dropped by the final boss). True to its name, Chlorophyte has plant-themed properties, and can be used to craft armor and weapons that harness the powers of plants.
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Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources—roots, berries, bark, leaves, and wood—and other biological sources such as fungi. [1] Archaeologists have found evidence of textile dyeing dating back to the Neolithic period.
The dye is an organic compound of bromine (i.e., an organobromine compound), a class of compounds often found in algae and in some other sea life, but much more rarely found in the biology of land animals. This dye is in contrast to the imitation purple that was commonly produced using cheaper materials than the dyes from the sea snail. [2]
The plant's roots contain several polyphenolic compounds, such as 1,3-Dihydroxyanthraquinone (purpuroxanthin), 1,4-Dihydroxyanthraquinone (quinizarin), 1,2,4-Trihydroxyanthraquinone (purpurin) and 1,2-dihydroxyanthraquinone . This last compound gives it its red colour to a textile dye known as Rose madder. It was also used as a colourant ...
The plant's roots contain an anthracene compound called alizarin that gives its red colour to a textile dye known as Rose madder. It was also used as a colourant, especially for paint, that is referred to as Madder lake. The synthesis of alizarin greatly reduced demand for the natural compound. [4] In Georgia, Rubia is used for dying Easter ...
It was extensively cultivated from antiquity until the mid-nineteenth century. The plant's roots contain an anthraquinone called purpurin (1,2,4-Trihydroxyanthraquinone) that gives it its red colour when used as a textile dye. It was also used as a colourant, especially for paint, that is referred to as Madder lake.