20 



CONSTITUENTS OF MILK 



The following results of Van Slyke and Bosworth 12 show the 

 composition of milk serum as separated by filtration through 

 porcelain candles. 



TABLE VI 

 COMPOSITION OF MILK AND MILK SERUM 



* Not obtained on same sample. 



Van Slyke and Bosworth suggest that the various combina- 

 tions of acids and bases in milk are: 



Proteins combined with calcium ...................... 3 . 20 



Di-calcium phosphate (CaHPO 4 ) ..................... 0. 175 



Calcium chloride ................................... . 119 



Mono-magnesium phosphate (MgH 4 P2Os) ............. 0.103 



Sodium citrate (NasCeHsO?) ........................ 0.222 



Potassium citrate (KaCeH^OT) ....................... 0.052 



Di-potassium phosphate (K^HPCU) ................... 0.230 



Other constituents which have been found in minute traces 

 are fluorine, iodine, silica, acetates, and thiocyanates. 



Lecithin. C44H9oOgNP also exists in milk in minute quan- 

 tities. 



