发明名称 |
Process for producing a particulate composition comprising an hydrous crystalline 2-O-α-D-glucosyl-L-ascorbic acid |
摘要 |
The invention provides a process for enabling the production of a particulate composition containing anhydrous crystalline ascorbic acid 2-glucoside that does not significantly cake even when the production yield of ascorbic acid 2-glucoside does not reach 35% by weight. The process for producing a particulate composition containing anhydrous crystalline ascorbic acid 2-glucoside, which comprises allowing a CGTase to act on a solution containing either liquefied starch or dextrin and L-ascorbic acid and then allowing a glucoamylase to act on the resulting solution to obtain a solution with an ascorbic acid 2-glucoside production yield of at least 27%, purifying the obtained solution to increase the ascorbic acid 2-glucoside content to a level of over 86% by weight, precipitating anhydrous crystalline ascorbic acid 2-glucoside by a controlled cooling method or pseudo-controlled cooling method, collecting the precipitated anhydrous crystalline ascorbic acid 2-glucoside, and ageing and drying the collected anhydrous crystalline ascorbic acid 2-glucoside. |
申请公布号 |
US9186368(B2) |
申请公布日期 |
2015.11.17 |
申请号 |
US201414295546 |
申请日期 |
2014.06.04 |
申请人 |
HAYASHIBARA CO., LTD. |
发明人 |
Shibuya Takashi;Izawa Seisuke;Nishimoto Tomoyuki;Fukuda Shigeharu;Miyake Toshio |
分类号 |
C07H17/04;A61K31/7048;C12P19/18;C12P19/60;A61K9/16 |
主分类号 |
C07H17/04 |
代理机构 |
Browdy and Neimark, PLLC |
代理人 |
Browdy and Neimark, PLLC |
主权项 |
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. |
地址 |
Okayama JP |