| 单词 | quinova | 
| 释义 | quinovan. Chemistry.  1.   quinova red  n. now rare a resinous substance derived from the tannin present in the bark of the tree formerly known as  Cinchona nova (perhaps cascarilla, genus  Ladenbergia). ΚΠ 1862    H. Watts tr.  L. Gmelin Hand-bk. Chem. XV. 486  				Quinova-red... Different from cinchona-red. Occurs ready-formed in large quantity in Cinchona nova. 1894    Watts' Dict. Chem. IV. 392  				Quinova red is a nearly black resin. 1918    A. R. Cushny Text-bk. Pharmacol. Therapeutics 		(ed. 7)	 457  				The neutral bitter substances have been named quinovin, quinova-red and cinchona-red. ΚΠ 1868    H. Watts Dict. Chem. V. 31  				The alcoholic solution..leaves the quinova-sugar, on evaporation, as an uncrystallisable hygroscopic mass.  3.   quinova-bitter  n. now rare = quinovin n. ΚΠ 1868    H. Watts Dict. Chem. V. 32  				Quinovin... Quinova-bitter; formerly also called Quinovic, Quinovatic or Chiococcic acid. 1884    H. G. Greenish tr.  G. Dragendorff Plant Anal. 175  				Quinovic acid, obtained by boiling quinovin or quinova-bitter with acids, is said to resemble cholic acid in gradually turning red with sulphuric acid and sugar. 1989    Merck Index 		(ed. 11)	 1287/1  				Quinovia. Quinova-bitter; chinovin. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). <  | 
	
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