mutarotation

[myoo-tuh-roh-tey-shuhn]

noun

Chemistry.

1. a gradual change in the optical rotation of freshly prepared solutions of reducing sugars.

Word History and Origins

Origin of mutarotation¹

1895–1900; < Latin mūtā ( re ) to change + rotation

Example Sentences

This phenomenon has been called mutarotation by T. M. Lowry.

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This discovery explained the mutarotation of glucose.

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Solutions exhibit mutarotation, fresh solutions having a specific rotation of −104.0�, which gradually diminishes to −92�.

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But when glucose is dissolved in water, it exhibits in a marked degree the phenomenon known as "mutarotation"; that is, freshly made solutions exhibit a certain definite rotatory power, but this changes rapidly until it finally reaches another definite specific rotation.

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The results of these studies may be considered in connection with the several different types of reactions which these sugars undergo, as follows: Glucoside Hydrolysis.—As was pointed out in connection with the discussion of the mutarotation of glucose, this sugar may exist in either the α or the β modification.

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