| 摘要 |
PURPOSE:Proteins are removed from whey, the remainder is acidified and filtered, then, the filtrate is alkalized and the precipitate is collected to obtain noncrystallic calcium salts insoluble in water from waste in the cheese production. CONSTITUTION:Proteins are removed from whey, and the remainder is acidified, preferably lower than 4 in pH and subjected to electric dialysis. The resultant supernatant is adjusted in pH, preferably to 7.0 by adding alkali such as sodium hydroxide. Then, the precipitate formed is separated, when necessary, mixed with an oil to give the objective calcium salt for enriching foods, which is insoluble in water and noncrystalline. |
