mutarotationn.

Brit.

/mjuːtərə(ʊ)ˈteɪʃn/, U.S.

/ˈˌmjudəˌroʊˈteɪʃ(ə)n/

Origin: Formed within English, by compounding. Etymons: mutation n., rotation n.

Etymology: < muta- (in mutation n.) + rotation n., as alternative to slightly earlier multirotation n.

Chemistry.

The change of optical activity with time exhibited by solutions of certain compounds, esp. sugars, after being prepared; an instance of this.

ΘΚΠ

the world > matter > chemistry > chemical structure or stereochemistry > [noun] > configuration > changes in > mutarotation

multirotation1890

mutarotation1899

1899 T. M. Lowry in Jrnl. Chem. Soc. 75 213 The essential feature of the phenomenon, however, is the change of rotatory power which takes place in the freshly prepared solution, and the term ‘mutarotation’ may, therefore, be used with advantage to include all those cases in which such a change occurs without reference either to the sign or to the relative magnitude of the initial and final rotations.

1937 Chem. Rev. 21 65 The brucine salt..was found..to exhibit definite mutarotation.

1971 Jrnl. Gen. Psychol. 85 116 Each quantity of the sugar solution was refrigerated for a day before use at room temperature to allow adequate time for mutarotations.

1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. ii. 33 The optical rotations of freshly made solutions of α- and β- d-glucose change with time. This is called mutarotation.

This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).

单词	mutarotation
释义	mutarotationn. Brit. /mjuːtərə(ʊ)ˈteɪʃn/, U.S. /ˈˌmjudəˌroʊˈteɪʃ(ə)n/ Origin: Formed within English, by compounding. Etymons: mutation n., rotation n. Etymology: < muta- (in mutation n.) + rotation n., as alternative to slightly earlier multirotation n. Chemistry. The change of optical activity with time exhibited by solutions of certain compounds, esp. sugars, after being prepared; an instance of this. ΘΚΠ the world > matter > chemistry > chemical structure or stereochemistry > [noun] > configuration > changes in > mutarotation multirotation1890 mutarotation1899 1899 T. M. Lowry in Jrnl. Chem. Soc. 75 213 The essential feature of the phenomenon, however, is the change of rotatory power which takes place in the freshly prepared solution, and the term ‘mutarotation’ may, therefore, be used with advantage to include all those cases in which such a change occurs without reference either to the sign or to the relative magnitude of the initial and final rotations. 1937 Chem. Rev. 21 65 The brucine salt..was found..to exhibit definite mutarotation. 1971 Jrnl. Gen. Psychol. 85 116 Each quantity of the sugar solution was refrigerated for a day before use at room temperature to allow adequate time for mutarotations. 1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. ii. 33 The optical rotations of freshly made solutions of α- and β- d-glucose change with time. This is called mutarotation. This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022). < n.1899
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