Composition of Ultrafiltrates from Milk Heated at 80 to 230° F. in Relation to Heat Stability

Analyses of ultrafiltrates collected from milk at temperatures up to 230 P. illdicated that temperature changes affect the inorganic composition of milk nmch more drastically than has previously been demonstrated from the analyses of cooled milks. At 200 F., the amount of calcium passing into the ultrafiltrate was approximately 50%, and the phosphate about 82%, oil that found at 80 F. On the other hand, the hydrogen ion concentration of ultrafiltrate eolleeted at 200 F. was at least double that of ultrafiltrate collected at 80 F.