| abstract |
An alternative method for efficiently producing lactic acids from carbohydrate-containing raw materials is provided. At least one metal compound selected from the group consisting of an indium compound, a gallium compound, an aluminum compound, a tin compound, and a rhenium compound, an alkali metal salt, an alkaline earth metal salt, and a first transition series metal salt A carbohydrate-containing raw material is heat-treated in a solvent containing water and / or alcohol using at least one salt selected from the group consisting of quaternary ammonium salt and quaternary phosphonium salt as a catalyst. And a method for producing lactic acids. [Selection figure] None |