| 单词 |
hexone |
| 释义 |
hexone Chem.|ˈhɛksəʊn|
Formerly also hexon.
[See hex- and -one; in sense 1, ad. G. hexon, hexonbase (A. Kossel 1898, in Zeitschr. f. physiol. Chem. XXV. 175).]
1. In full, hexone base: any of the three basic amino-acids arginine, histidine, and lysine.
Kossel distinguished between hexon and hexonbase (see quot. 18982).
1898Jrnl. Chem. Soc. LXXIV. i. 612 The substances..are called protones; these are, by the prolonged action of pancreatic juice, partially broken up into hexones (lysine, histidine, arginine). Ibid. 715 By the further hydrolysis of the protamines the hexon bases, histidine, arginine, and lysine, are produced, the name hexon being retained for nitrogenous substances, and obtained by the decomposition of proteids containing six atoms of carbon. 1905J. Wade Introd. Org. Chem. (ed. 2) lxxiii. 555 Histidine, the principal representative of the ‘hexone’ bases, is an important degradation product of proteïns. 1953Biochem. Jrnl. LIII. 435/2 A new technique for the estimation and isolation of the hexone bases in protein hydrolysates.
2. The name for methyl isobutyl ketone as used industrially.
1938T. H. Durrans Solvents (ed. 4) ii. iii. 126 Methyl isobutyl ketone, or 2-methyl pentanone 5, known industrially as hexone, is a medium boiling solvent for nitrocellulose. 1966McGraw-Hill Encycl. Sci. & Technol. X. 423/1 In the industrial process employing hexone (the Redox process), the uranium fuel is dissolved in nitric acid. |
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