Mutarotation is a change in optical rotation as anomers interconvert in a chemical solution. The glucose mutarotation experiment detects redistribution between cyclic forms through monosaccharide ring-chain interconversion.
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Mutarotation is a phenomenon observed in solutions of certain carbohydrates, primarily reducing sugars, where the optical rotation of the solution changes over time until it reaches a stable equilibrium. This change in optical rotation occurs due to the interconversion between different anomeric forms of the sugar, particularly in the case of aldoses and ketoses. In aqueous solution, many aldoses can exist in two cyclic forms (anomers): the alpha (α) and beta (β) forms.