| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing ascorbic acid 2-glucoside anhydrous crystal-containing powder, which enables production of powder that is hard to solidify significantly, even when a yield of ascorbic acid 2-glucoside produced is less than 35 mass%.SOLUTION: A method for producing ascorbic acid 2-glucoside anhydrous crystal-containing powder comprises the steps of: causing CGTase to act on a solution containing either liquefied starch or dextrin and L-ascorbic acid, and causing glucoamylase to act on the solution to obtain a solution in which a percentage of ascorbic acid 2-glucoside produced is 27 mass% or greater; purifying the resulting solution such that the ascorbic acid 2-glucoside content exceeds 86 mass%; precipitating the ascorbic acid 2-glucoside anhydrous crystals by controlled cooling or semi-controlled cooling; and recovering, aging, and drying the precipitated ascorbic acid 2-glucoside anhydrous crystals. |
