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- Quercitron abstract "Quercitron is a yellow natural dye obtained from the bark of the Eastern Black Oak (Quercus velutina), a forest tree indigenous in North America.The name is a shortened form of quercicitron, from Latin quercus, oak, and citron, lemon, and was invented by Edward Bancroft (1744–1821), who by act of parliament in 1785 was granted special privileges in regard to the importation and use of the substance. The dyestuff is prepared by grinding the bark in mills after it has been freed from its black epidermal layer, and sifting the product to separate the fibrous matter, the fine yellow powder which remains forming the quercitron of commerce.The ruddy-orange decoction of quercitron contains quercitannic acid, whence its use in tanning, and an active dyeing principle, quercitrin, C21H20O12. The latter substance is a glycoside, and in aqueous solution under the influence of mineral acids it yields quercetin, C15H10O7, which is precipitated, and the methyl-pentose rhamnose.Quercetin is a crystalline powder of a brilliant citron yellow color, entirely insoluble in cold water and dissolving only sparingly in hot water, but quite soluble in alcohol.Either by itself or in some form of its glucoside quercitrin, quercetin is found in several vegetable substances, among others in cutch, in Persian berries (Rhamnus cathartica), buckwheat leaves (Fagopyrum esculentum), Zante fustic wood (Rhus cotinus), and in rose petals.Chemically, quercetin is a member of a fairly extensive class of natural coloring matters derived from phenyl benzoyl-pyrone or flavone, the constitution of which followed on the researches of St von Kostanecki, A. G. Perkin, Herzig, Goldschmidt and others. Among the related, coloring matters are: chrysin from poplar buds, apigenin from parsley, luteolin from weld, mignonette and dyer's broom, fisetin from young fustic and yellow cypress, galangin from galangal root, and myricetin from Nageia nagi.".
- Quercitron thumbnail Quercitrin.png?width=300.
- Quercitron wikiPageID "738182".
- Quercitron wikiPageLength "2465".
- Quercitron wikiPageOutDegree "39".
- Quercitron wikiPageRevisionID "646199343".
- Quercitron wikiPageWikiLink Apigenin.
- Quercitron wikiPageWikiLink Bark_mill.
- Quercitron wikiPageWikiLink Buckwheat.
- Quercitron wikiPageWikiLink Catechu.
- Quercitron wikiPageWikiLink Category:Flavonoid_glycosides.
- Quercitron wikiPageWikiLink Category:Plant_dyes.
- Quercitron wikiPageWikiLink Chrysin.
- Quercitron wikiPageWikiLink Cupressus_nootkatensis.
- Quercitron wikiPageWikiLink Decoction.
- Quercitron wikiPageWikiLink Dye.
- Quercitron wikiPageWikiLink Dyers_broom.
- Quercitron wikiPageWikiLink Dyestuff.
- Quercitron wikiPageWikiLink Eastern_Black_Oak.
- Quercitron wikiPageWikiLink Edward_Bancroft.
- Quercitron wikiPageWikiLink Epidermal_layer.
- Quercitron wikiPageWikiLink Fibrous_matter.
- Quercitron wikiPageWikiLink Fisetin.
- Quercitron wikiPageWikiLink Flavone.
- Quercitron wikiPageWikiLink Flavones.
- Quercitron wikiPageWikiLink Galangal.
- Quercitron wikiPageWikiLink Galangin.
- Quercitron wikiPageWikiLink Genista_tinctoria.
- Quercitron wikiPageWikiLink Glycoside.
- Quercitron wikiPageWikiLink Latin.
- Quercitron wikiPageWikiLink Luteolin.
- Quercitron wikiPageWikiLink Myricetin.
- Quercitron wikiPageWikiLink Natural_dye.
- Quercitron wikiPageWikiLink North_America.
- Quercitron wikiPageWikiLink Parsley.
- Quercitron wikiPageWikiLink Pentose.
- Quercitron wikiPageWikiLink Poplar_bud.
- Quercitron wikiPageWikiLink Quercetin.
- Quercitron wikiPageWikiLink Quercitannic_acid.
- Quercitron wikiPageWikiLink Quercitrin.
- Quercitron wikiPageWikiLink Quercus_velutina.
- Quercitron wikiPageWikiLink Reseda_(plant).
- Quercitron wikiPageWikiLink Rhamnose.
- Quercitron wikiPageWikiLink Rhamnus_cathartica.
- Quercitron wikiPageWikiLink Rose_petal.
- Quercitron wikiPageWikiLink Tanning.
- Quercitron wikiPageWikiLink Tree.
- Quercitron wikiPageWikiLink Yellow_cypress.
- Quercitron wikiPageWikiLink Zante_fustic_wood.
- Quercitron wikiPageWikiLink File:Quercitrin.png.
- Quercitron wikiPageWikiLinkText "Quercitron".
- Quercitron wikiPageWikiLinkText "quercitron".
- Quercitron hasPhotoCollection Quercitron.
- Quercitron wikiPageUsesTemplate Template:1911.
- Quercitron wikiPageUsesTemplate Template:Glycosides.
- Quercitron wikiPageUsesTemplate Template:No_footnotes.
- Quercitron wikiPageUsesTemplate Template:One_source.
- Quercitron subject Category:Flavonoid_glycosides.
- Quercitron subject Category:Plant_dyes.
- Quercitron hypernym Dye.
- Quercitron type Article.
- Quercitron type ChemicalCompound.
- Quercitron type Article.
- Quercitron type Flavonoid.
- Quercitron type Glycoside.
- Quercitron comment "Quercitron is a yellow natural dye obtained from the bark of the Eastern Black Oak (Quercus velutina), a forest tree indigenous in North America.The name is a shortened form of quercicitron, from Latin quercus, oak, and citron, lemon, and was invented by Edward Bancroft (1744–1821), who by act of parliament in 1785 was granted special privileges in regard to the importation and use of the substance.".
- Quercitron label "Quercitron".
- Quercitron sameAs Quercitrón.
- Quercitron sameAs Kversitroni.
- Quercitron sameAs m.0373zs.
- Quercitron sameAs Q4356365.
- Quercitron sameAs Q4356365.
- Quercitron wasDerivedFrom Quercitron?oldid=646199343.
- Quercitron depiction Quercitrin.png.
- Quercitron isPrimaryTopicOf Quercitron.