Nitrogen Factor for the Calcium Caseinate–Calcium Phosphate Complex in Milk

Open Access
Publisher Website
Google Scholar
Abstract
Casein exists in milk as aggregates of a calcium caseinate-calcium phosphate complex. In the broad intermediate range of particle sizes the contained casein has the same phosphorus: nitrogen ratio for all sizes, and apparently for all milks, but the proportion of calcium phosphate varies slightly. Analyses of the colloids, centrifugally separated, give an average ratio of dry weight of complex to nitrogen of about 6.89 (1.3%). This factor applies to an average normal milk and to the intermediate sizes only. An equation is given with which a factor correct to about 0.6% can be calculated for any particular milk or size fraction provided the calcium content of the colloid is known.

This publication has 3 references indexed in Scilit: