Behavior of 3,4-endiol form of 2,3-diketo-gulono-.DELTA.-lactone formed from dehydro-L-ascorbic acid in deoxygenated and neutral solution.

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概要

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• The formation of L-ascorbic acid (AsA) was observed when dehydro-L-ascorbic acid (DHA) was dissolved in neutral buffer solutions under N2 bubbling at room temperature. The reduction of DHA was done with the lactonized compound of 2, 3-diketo-L-gulonic acid (DKG), that is, the 3, 4-endiol form of 2, 3-diketo-gulono-b-lactone (3, 4-End DKGL). 3, 4-End DKGL was formed from DHA or DKG (yield about 10%) under N2 bubbling in neutral buffer solution (pH 7.2). This material was not stable in neutral or alkaline solutions. 3, 4-End DKGL suppressed more strongly the linoleic acid (LA) peroxidation in the medium containing 20% EtOH and 10mM LA than did AsA. This may suggest the possibility that 3, 4-End DKGL reproduces AsA from DHA in physiological status.

• 財団法人 学会誌刊行センターの論文

著者

• 森田 尚文

  Laboratory of Food Chemistry, College of Agriculture, University of Osaka Prefecture

• 高木 正之助

  Laboratory of Food Chemistry, College of Agriculture, University of Osaka Prefecture

• 川尻 厚志

  Laboratory of Food Chemistry, College of Agriculture, University of Osaka Prefecture

• 中田 邦彦

  Laboratory of Food Chemistry, College of Agriculture, University of Osaka Prefecture

関連論文

• Behavior of 3,4-endiol form of 2,3-diketo-gulono-.DELTA.-lactone formed from dehydro-L-ascorbic acid in deoxygenated and neutral solution.

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