| abstract |
PROBLEM TO BE SOLVED: To produce D-allose, D-altrose and L-altrose which can be industrially produced in large quantities and at low cost, and to provide D-allose and D-alt. Provided are an enzyme reaction solution containing Lose or L-altrose, and an enzyme preparation containing D-xylose / isomerase. SOLUTION: D-xylose isomerase is allowed to act on a solution containing D-psicose and / or L-psicose, and D-allose and D-altrose from D-psicose, and L-psicose from L-psicose. A method for producing aldose, wherein aldose is produced, and one or more aldohexoses selected from D-allose, D-altrose and L-altrose are collected; and D-allose is produced by the method. An enzyme reaction solution containing D-altrose or L-altrose, and an enzyme preparation containing D-xylose / isomerase used in the production method. |