Patent ID: 9186368
Filing Date: 2015-11-17
Classification: A61K,A61P,C07H,C12P,C12Y

Abstract:
1. A particulate composition comprising anhydrous crystalline 2-O-α-D-glucosyl-L-ascorbic acid, which comprises 2-O-α-D-glucosyl-L-ascorbic acid in an amount of over 98.0% by weight but 99.8% by weight or lower, on a dry solid basis; which has a degree of crystallinity of 90% or higher for anhydrous crystalline 2-O-α-D-glucosyl-L-ascorbic acid, when calculated based on a profile of powder X-ray diffraction analysis of said composition; which contains L-ascorbic acid and/or D-glucose; which contains L-ascorbic acid in an amount of 0.1% by weight or lower, on a dry solid basis; which contains particles with a particle size of less than 150 μm in an amount of 70% by weight or higher to the whole particulate composition, and those with a particle size of at least 53 μm but less than 150 μm in an amount of 40 to 60% by weight to the whole composition; and which has a reducing power of the whole composition being less than one percent by weight.