Abstract
About 180mg of meta or pyrophosphate had to be added to 100ml of abnormal milk to make its curd tension nearly zero, whereas the amount of the phosphate needed for 100ml of normal milk was about 80mg.
By the addition of a large amount of meta or pyrophosphate, the casein particles in abnormal milk under natural condition were combinative rather to calcium than phosphorus in comparison with those in normal milk and became less easily to soft curd milk toward pepsin. The result was quite contrary to that for normal milk, in which an appreciable decrease in the ratio of bound-Ca and P was observed.
The amounts of bound-Ca (mg) of casein (1g) per 1mg of metaphosphate added were about 7.5×10-2 in abnormal milk and about 4.4×10-2 in normal milk. They were about 20% higher than those with pyrophosphate.
On the contrary, the amounts of bound-P (mg) of metaphosphate were about 15.2×10-2 and 17.8×10-2, respectively, being 25% higher than those with pyrophosphate.
