| abstract |
An object of the present invention is to provide a protein having an action of suppressing crystallization of calcium in the body and promoting absorption in the intestinal tract, and a method for producing the protein. Furthermore, it aims at provision of the food-drinks and feed which contain the calcium salt crystallization suppression and absorption promoter which uses this protein as an active ingredient, and this protein. SOLUTION: The ability to suppress crystallization of calcium salt against calcium carbonate, calcium phosphate, calcium oxalate, etc. by extracting shells, especially scallop shells in the presence of oxycarboxylic acids such as citric acid and their salts or hydrates thereof. It was possible to obtain a protein having a high yield. In addition, the protein of the present invention can be used by mixing with a beverage, food, or sample, and further, a calcium absorption promoter, a calculus treatment and / or prevention agent, an osteoporosis treatment and / or It is effective as a preventive agent. [Selection figure] None |