Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q4356365> ?p ?o }
Showing triples 1 to 40 of
40
with 100 triples per page.
- Q4356365 subject Q7224086.
- Q4356365 subject Q8461205.
- Q4356365 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.".
- Q4356365 thumbnail Quercitrin.png?width=300.
- Q4356365 wikiPageWikiLink Q1001011.
- Q4356365 wikiPageWikiLink Q10884.
- Q4356365 wikiPageWikiLink Q1136912.
- Q4356365 wikiPageWikiLink Q132734.
- Q4356365 wikiPageWikiLink Q147861.
- Q4356365 wikiPageWikiLink Q161061.
- Q4356365 wikiPageWikiLink Q162777.
- Q4356365 wikiPageWikiLink Q163811.
- Q4356365 wikiPageWikiLink Q1649777.
- Q4356365 wikiPageWikiLink Q189720.
- Q4356365 wikiPageWikiLink Q192639.
- Q4356365 wikiPageWikiLink Q2046743.
- Q4356365 wikiPageWikiLink Q205654.
- Q4356365 wikiPageWikiLink Q211578.
- Q4356365 wikiPageWikiLink Q2456591.
- Q4356365 wikiPageWikiLink Q25284.
- Q4356365 wikiPageWikiLink Q374116.
- Q4356365 wikiPageWikiLink Q397.
- Q4356365 wikiPageWikiLink Q409478.
- Q4356365 wikiPageWikiLink Q414109.
- Q4356365 wikiPageWikiLink Q415011.
- Q4356365 wikiPageWikiLink Q418384.
- Q4356365 wikiPageWikiLink Q424525.
- Q4356365 wikiPageWikiLink Q424567.
- Q4356365 wikiPageWikiLink Q49.
- Q4356365 wikiPageWikiLink Q5341743.
- Q4356365 wikiPageWikiLink Q7224086.
- Q4356365 wikiPageWikiLink Q7271322.
- Q4356365 wikiPageWikiLink Q734727.
- Q4356365 wikiPageWikiLink Q8461205.
- Q4356365 wikiPageWikiLink Q899955.
- Q4356365 wikiPageWikiLink Q951449.
- Q4356365 wikiPageWikiLink Q973741.
- Q4356365 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.".
- Q4356365 label "Quercitron".
- Q4356365 depiction Quercitrin.png.