rhamninn.

Brit.

/ˈramnɪn/, U.S.

/ˈræmnən/

Forms: 1800s– rhamnin, 1800s– rhamnine.

Origin: Formed within English, by derivation; modelled on a French lexical item. Etymons: rhamnus n., -in suffix¹.

Etymology: < rhamnus n. + -in suffix¹, after French rhamnine (Fleury 1841, in Jrnl. de pharm. 27 667; c1820 denoting a crimson colouring matter obtained from buckthorn berries).

Chemistry. Now rare.

A yellow colouring matter obtained from the berries of common or purging buckthorn, Rhamnus cathartica, containing flavonoid glycosides; (also) = rhamnetin n. Cf. rhamnegin n., xanthorhamnin n. at xantho- comb. form 1a(a).

ΘΚΠ

the world > matter > chemistry > organic chemistry > neutral substances from plants > bitter principles > [noun]

quassin1819

colocynthin1830

plumbagin1830

colocynthite1838

quassite1838

amarine1839

rhamnin1843

maticin1844

limonin1845

serpentarin1847

rubian1848

humulin1854

pinipicrin1859

ilicin1861

physalin1863

scrophularin1868

lobelacrin1874

berberia1876

berberine1876

citrulline1882

tigline1900

1843 Ann. Chym. & Pharmacy 1 405 Rhamnine occurs in the juice and marrow of the berries of buckthorn, from which it separates either immediately on expression, or after a certain time.

1894 Bot. Gaz. 19 70 Rhamnase. In seeds of Rhamnus infectorius, it decomposes the glucoside xanthorhamnin into rhamnin and sugar.

1931 E. C. Miller Plant Physiol. xi. 632 Xanthorhamnin which is found in the seeds of Rhamnus infectorius (Persian berry) is hydrolyzed into rhamnin and glucose by an enzyme.

1977 W. H. Lewis & M. P. F. Elvin-Lewis Med. Bot. 284/2 Rhamnus catharticus... Purgative berries contain rhamnin and rhamnetin; now largely replaced by cascara.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	rhamnin
释义	rhamninn. Brit. /ˈramnɪn/, U.S. /ˈræmnən/ Forms: 1800s– rhamnin, 1800s– rhamnine. Origin: Formed within English, by derivation; modelled on a French lexical item. Etymons: rhamnus n., -in suffix¹. Etymology: < rhamnus n. + -in suffix¹, after French rhamnine (Fleury 1841, in Jrnl. de pharm. 27 667; c1820 denoting a crimson colouring matter obtained from buckthorn berries). Chemistry. Now rare. A yellow colouring matter obtained from the berries of common or purging buckthorn, Rhamnus cathartica, containing flavonoid glycosides; (also) = rhamnetin n. Cf. rhamnegin n., xanthorhamnin n. at xantho- comb. form 1a(a). ΘΚΠ the world > matter > chemistry > organic chemistry > neutral substances from plants > bitter principles > [noun] quassin1819 colocynthin1830 plumbagin1830 colocynthite1838 quassite1838 amarine1839 rhamnin1843 maticin1844 limonin1845 serpentarin1847 rubian1848 humulin1854 pinipicrin1859 ilicin1861 physalin1863 scrophularin1868 lobelacrin1874 berberia1876 berberine1876 citrulline1882 tigline1900 1843 Ann. Chym. & Pharmacy 1 405 Rhamnine occurs in the juice and marrow of the berries of buckthorn, from which it separates either immediately on expression, or after a certain time. 1894 Bot. Gaz. 19 70 Rhamnase. In seeds of Rhamnus infectorius, it decomposes the glucoside xanthorhamnin into rhamnin and sugar. 1931 E. C. Miller Plant Physiol. xi. 632 Xanthorhamnin which is found in the seeds of Rhamnus infectorius (Persian berry) is hydrolyzed into rhamnin and glucose by an enzyme. 1977 W. H. Lewis & M. P. F. Elvin-Lewis Med. Bot. 284/2 Rhamnus catharticus... Purgative berries contain rhamnin and rhamnetin; now largely replaced by cascara. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1843
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