Noun
English Wikipedia has an article on:mutarotationWikipedia
mutarotation (countable and uncountable, plural mutarotations)
(organic chemistry, biochemistry) A dynamic change in the rotation of polarized light as it passes through a fresh solution of some sugars as an equilibrium mixture of anomers is formed
Mutarotation consists of a temporary reversal of the ring-forming reaction, resulting in the open-chain form, followed by a reforming of the ring. Source: Internet
Mutarotation is considerably slower at temperatures close to convert. Source: Internet