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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.
The compound was first obtained by Otto Linné Erdman [1] and Auguste Laurent [2] in 1840 as a product from the oxidation of indigo dye by nitric acid and chromic acids. Isatin is a well-known natural product which can be found in plants of the genus Isatis , in Couroupita guianensis , [ 3 ] [ 4 ] and also in humans, as a metabolic derivative ...
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.
True indigo is a shrub 1–2 metres (3 ft 3 in – 6 ft 7 in) high. It may be an annual, biennial, or perennial, depending on the climate in which it is grown. It has light green pinnate leaves and sheafs of pink or violet flowers. The rotenoids deguelin, dehydrodeguelin, rotenol, rotenone, tephrosin and sumatrol can be found in I. tinctoria. [3]
SOURCE: Integrated Postsecondary Education Data System, Texas State University (2014, 2013, 2012, 2011, 2010). Read our methodology here. HuffPost and The Chronicle examined 201 public D-I schools from 2010-2014. Schools are ranked based on the percentage of their athletic budget that comes from subsidies.
Red, White, and Black Make Blue: Indigo in the Fabric of Colonial South Carolina Life is a book written by Andrea Feeser and published by the University of Georgia Press in 2013. [ 1 ] [ 2 ] About
Teachers let students choose which math methods work for them as long as they show their work and get the right answer. For example , children know 3/10 is the same as 0.3 – but how they grasp ...
The University Star, also called The Star, is a student-run newspaper for Texas State University. The Star provides news and information on issues that affect the Texas State community as well as San Marcos news.