abstract |
PROBLEM TO BE SOLVED: To provide a stable water-soluble composition containing an effective concentration of α-lipoic acid and a method for producing the same. The water-soluble α-lipoic acid composition of the present invention comprises α-lipoic acid, an emulsifier and an alcohol. It is preferable that 1-30 mass% α-lipoic acid, 1-50 mass% emulsifier, 1-98 mass% alcohol, and the HLB of the emulsifier used in the present invention is 10 or more, The emulsifier is preferably one or more selected from polyglycerin fatty acid esters and saponins. Furthermore, it is preferable that the mass ratio of α-lipoic acid and emulsifier used in the present invention is 1/1 to 3 and the mass ratio of α-lipoic acid and alcohol is 1/1 to 10. [Selection figure] None |