Abstract
Summary
Amino acid analysis of human blood plasma showed considerable intra- and terindividual variation in fasting as well as in the postprandial state. The mean maximal postprandial rise of all amino acids usually occurred in the first or second hour after test meal ingestion but in any individual it could be delayed as long as 4 hr. The plasma amino acid molar ratios were quite different from those calculated for beef muscle protein and we conclude that the amino acid pattern of the test meal was not reflected in the plasma. Ingestion of a nonprotein meal resulted in reduced plasma amino acid concentrations that persisted for 8 hr. Ingestion of beef resulted in a significant drop in plasma glucose concentration in the first 2 hr and the expected rise in amino N and urea N.
Get full access to this article
View all access options for this article.