Interrelations of milk salt constituents

Various milk salts are interrelated and the interrelationships are affected by pH (Table 5.3). Those constituents, the concentrations of which are related to pH in the same way, are also directly related to each other (e.g. the concentrations of total soluble calcium and ionized calcium), while those related to pH in opposite ways are inversely related (e.g. the concentrations of potassium and sodium). 

The concentration of lactose is inversely related to the concentration of soluble salts expressed as osmolarity. This results from the requirement that milk be isotonic with blood. 

Soluble unionized calcium Colloidal inorganic phosphorus 

Soluble inorganic phosphorus Ester phosphorus Potassium Total phosphorus 

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