| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder containing anhydrous crystals of ascorbic acid 2-glucoside, the powder being significantly less prone to caking than existing general-purpose quasi-drug-class powders containing anhydrous crystals of ascorbic acid 2-glucoside, to provide a method for producing the same, and to provide uses thereof.SOLUTION: There are provided a powder containing anhydrous crystals of ascorbic acid 2-glucoside, which contains, in terms of anhydride content, greater than 98.0 mass% and less than 99.9 mass% of ascorbic acid 2-glucoside, and in which the crystallinity of the anhydrous crystals of ascorbic acid 2-glucoside is at least 90%, as calculated on the basis of a powder X-ray diffraction profile, or after free moisture has been removed from the provided powder in a nitrogen stream, the dynamic amount of moisture absorbed by the powder after 12 hours at a temperature of 25°C and a relative humidity of 35 mass% is no more than 0.01 mass%; a method for producing the same; and uses thereof. |
