Approximately 30 % of the colloidal calcium is also bound in this way but the remainder, about 50% of the total calcium in milk, is in the form of colloidal calcium phosphate, a complex compound also containing some citrate.

• 而胶原钙仅有30%25以这种方式结合,蓁的约有50%25的钙形成磷酸钙盐胶体;复合物中也有一定的柠檬酸盐。