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Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria. Dye-bearing Indigofera plants were once common throughout the world. It is now produced via chemical routes. Blue colorants are rare.
Indigo vats are where fermentation and settlement processes for production of indigo dyestuff were accomplished. Each vat measures approximately 14 feet square and has a stuccoed interior. The upper vat, known as the "steeper vat", was used for the fermentation of indigo plants with the liquor drawn through a small portal into the "beater vat ...
Although sometimes considered a dye, indigo is a pigment (insoluble in water). Unlike many traditional mineral-based blues, indigo is an organic compound. It was once obtained by laborious extraction from various plants. Subsequent to the discovery of synthetic dyes, such as mauvine, a chemical route was discovered to this material. In 2022 ...
The first archaeological finds of woad seeds date to the Neolithic period. The seeds have been found in the cave of l'Audoste, Bouches-du-Rhône, France.Impressions of seeds of Färberwaid (Isatis tinctoria L.) or German indigo, of the plant family Brassicaceae, have been found on pottery in the Iron Age settlement of Heuneburg, Germany.
“What we’re doing,” defenseman Brandon Montour said, “is working.” The Panthers held the Sabres (27-28-4) to just 30 shots despite leading for most of the final 45 minutes and giving up ...
Indigo carmine, or 5,5′-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by aromatic sulfonation, which renders the compound soluble in water. Like indigo, it produces a blue color , and is used in food and other consumables , cosmetics, and as a medical contrast agent and staining agent; it also acts as a pH indicator .
Indigofera is a varied genus that has shown unique characteristics making it an interesting candidate as a potential perennial crop. [clarification needed] Specifically, there is diverse variation among species with a number of unique characteristics.
Lactarius indigo, commonly known as the indigo milk cap, indigo milky, indigo lactarius, blue lactarius, or blue milk mushroom, is a species of agaric fungus in the family Russulaceae. The fruit body color ranges from dark blue in fresh specimens to pale blue-gray in older ones.