Patent ID: 8211472

Claim:
A process for producing a suspension of ascorbic acid in glycerol wherein the suspension comprises ascorbic acid in an amount of 13% by mass or greater; wherein 8 to 12% by mass of the ascorbic acid is dissolved in the glycerol, and the rest of the ascorbic acid is crystallized in a form of microcrystals having a particle diameter of 25 μm or smaller, wherein the ascorbic acid microcrystals are uniformly dispersed in the suspension, the process comprising: mixing the ascorbic acid, the glycerol and ethyl alcohol to form a mixture and to dissolve the ascorbic acid in the glycerol and the ethyl alcohol; forming the suspension comprising the microcrystals of ascorbic acid and the glycerol by removing the ethyl alcohol from the mixture; and aging the microcrystals of ascorbic acid having a particle diameter of 25 μm or smaller in the suspension comprising 13% by mass or greater of the ascorbic acid at 20 to 40° C. for at least 3 days.