title: Possible Formation of Dehydro-L-ascorbic Acid from 2,3-Diketo-L-gulonic Acid in an Aqueous Solution.
abstract: The reaction of 2,3-diketo-L-gulonic acid (DKG), which is one of the important intermediate products in the degradation of L-ascorbic acid (ASA) in both food and biological systems, in an aqueous solution was studied. The formation of a small amount of the γ-lactone, dehydro-L-ascorbic acid (DASA), from DKG was observed. This strongly suggests the chemical possibility of a reverse reaction in DASA hydrolysis which has been long believed to be irreversible.
authors.affiliation: a Institute of Environmental Science for Human Life, Ochanomizu University.
authors.forename: N
authors.initials: N
authors.lastname: Miyake
authors.affiliation: a Institute of Environmental Science for Human Life, Ochanomizu University.
authors.forename: T
authors.initials: T
authors.lastname: Kurata
keywords: 2,3-diketo-L-gulonic acid; L-ascorbic acid; dehydro-L-ascorbic acid; lactonization