单词 | acetoin |
释义 | acetoinn. Chemistry. A pale yellow to colourless liquid which solidifies just below room temperature and which gives butter its characteristic aroma.Systematic name: 3-hydroxybutan-2-one; CH3C(O)CH(OH)CH3. ΘΚΠ the world > matter > chemistry > organic chemistry > ketones > [noun] > hydroxyketones acetoinc1919 c1919 Decennial Index Chem. Abstr. I–X 2015 Acetoin, see 2-Butanone, 3-hydroxy-. 1935 Jrnl. Chem. Soc. 704 Acetoin..is one of the simplest unsaturated optically active compounds. 1976 Ann. Rev. Microbiol. 30 561 If..fumarate is provided as a hydrogen acceptor, acetoin (acetylmethylcarbinol) is excreted. 2000 R. S. Jackson Wine Sci. (ed. 2) vi. 255 Acetoin..has a sugary, butter-like character. Its sensory significance in table wines, in which it occurs at low concentrations, is doubtful. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < n.c1919 |
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