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[Amino acid and peptide ratio in protein hydrolysates for parenteral feeding].

Using the method of amino acid analysis and routine methods of protein biochemistry, the ratio of amino acids and peptides in acid and enzyme protein hydrolyzates was determined. Depending on the production procedure, the hydrolyzates under study contained various amounts of free amino acids and peptides in which the number of amino acid residues varied from 2 to 7. Additional hydrolysis of these preparations by leucine aminopeptidase led to a decrease in the peptide content and to an increase in the amino acid content. This may have a beneficial effect on the quality of protein hydrolyzates.