Abstract
Diets containing different proteins at 20% level were fed to groups of young adult rats which had been trained to consume their daily requirement during 1.5 hr by spaced-feeding.
On the first one hour after withdrawal of food, the contents of the small intestinal lumen were collected and analyzed for nitrogen distribution.
When the diet containing 20% egg albumin was given, greater amount of protein was accumulated as compared to casein, gelatin, zein or wheat gluten. The accnmulation was accompanied with a protein fraction (TE) which was extractable with ethanol after trichloroacetic acid precipitation.
Electrophoresis of TE showed that at least one of the constituents appeared to be serum albumin.
Although no obvious correlation has been commonly noted between dietary egg albumin and the metabolism of serum albumin, these findings suggest that such a high accumulation of protein may largely be derived from endogenous sources than from dietary egg albumin per se.
