quercetinn.

Brit.

/ˈkwəːsᵻtɪn/, U.S.

/ˈkwərˌsədɪn/

Forms:

α. 1800s– quercetin, 1800s– quercetine.

β. 1800s– quercitin, 1800s– quercitine.

Origin: A borrowing from German. Etymon: German Quercetin.

Etymology: < German Quercetin (L. Rigaud 1854, in Ann. der Chemie u. Pharmacie 90 289) < querc- (in Quercitrin quercitrin n.) + German -etin -etin suffix. Compare French quercétine (1854).In β. forms probably influenced by quercit- (in quercitrin n.).

Chemistry.

A yellow crystalline pigment widely distributed in plants and usually obtained by hydrolysis of quercitrin.Systematic name: 3,3′,4′,5,7-pentahydroxyflavone; C₁₅H₁₀O₇.

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic compounds > [noun] > flavones > derivatives

quercetin1856

iretol1894

flavonol1898

1856 W. Gregory Handbk. Org. Chem. (ed. 4) 355 Quercetrine..when boiled with acids, yields grape sugar, and a new body, quercetine.

1873 I. Remsen tr. R. Fittig Wöhler's Outl. Org. Chem. v. 418 Quercitin..occurs ready formed in Calluna vulgaris, in tea, in the root-bark and trunk-bark of the apple-tree and other plants.

1913 Science 2 May 679/1 The substances isolated from the plant include quercitin, dextrose, [etc.].

1949 Thorpe's Dict. Appl. Chem. (ed. 4) IX. 300/2 Quercetin gives red-brown, brown-orange, bright orange and olive-black shades on wool mordanted with chromium, aluminium, tin, and iron, respectively.

1962 T. R. Seshadri in T. A. Geissman Chem. Flavonoid Compounds ii. 9 Quercetin and its glycosides can be conveniently extracted by borax and can be liberated by acidification.

1997 Manufacturing Chemist (Nexis) Aug. 58 Its affiliate..offers a small range of products for the health food industry, including diosmine, hesperidine, quercetine, lycopin, acidophilus bifidos and glutathione yeast.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	quercetin
释义	quercetinn. Brit. /ˈkwəːsᵻtɪn/, U.S. /ˈkwərˌsədɪn/ Forms: α. 1800s– quercetin, 1800s– quercetine. β. 1800s– quercitin, 1800s– quercitine. Origin: A borrowing from German. Etymon: German Quercetin. Etymology: < German Quercetin (L. Rigaud 1854, in Ann. der Chemie u. Pharmacie 90 289) < querc- (in Quercitrin quercitrin n.) + German -etin -etin suffix. Compare French quercétine (1854).In β. forms probably influenced by quercit- (in quercitrin n.). Chemistry. A yellow crystalline pigment widely distributed in plants and usually obtained by hydrolysis of quercitrin.Systematic name: 3,3′,4′,5,7-pentahydroxyflavone; C₁₅H₁₀O₇. ΘΚΠ the world > matter > chemistry > organic chemistry > organic compounds > [noun] > flavones > derivatives quercetin1856 iretol1894 flavonol1898 1856 W. Gregory Handbk. Org. Chem. (ed. 4) 355 Quercetrine..when boiled with acids, yields grape sugar, and a new body, quercetine. 1873 I. Remsen tr. R. Fittig Wöhler's Outl. Org. Chem. v. 418 Quercitin..occurs ready formed in Calluna vulgaris, in tea, in the root-bark and trunk-bark of the apple-tree and other plants. 1913 Science 2 May 679/1 The substances isolated from the plant include quercitin, dextrose, [etc.]. 1949 Thorpe's Dict. Appl. Chem. (ed. 4) IX. 300/2 Quercetin gives red-brown, brown-orange, bright orange and olive-black shades on wool mordanted with chromium, aluminium, tin, and iron, respectively. 1962 T. R. Seshadri in T. A. Geissman Chem. Flavonoid Compounds ii. 9 Quercetin and its glycosides can be conveniently extracted by borax and can be liberated by acidification. 1997 Manufacturing Chemist (Nexis) Aug. 58 Its affiliate..offers a small range of products for the health food industry, including diosmine, hesperidine, quercetine, lycopin, acidophilus bifidos and glutathione yeast. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1856
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