A study of the partial acid hydrolysis of cow-hide gelatin

Abstract

"Basic" fractions were found to suggest that residues of basic amino-acids occur in gelatin directly linked to residues of the higher monoamino-acids. Analysis of the "neutral" material led to the isolation of a number of lower peptides in the form of their acetyl derivatives. The monoamino-acids were identified and the rates of their liberation during partial hydrolysis were studied. A chromatographic micro-method for the detn. of the order of amino-acid residues in acetyl-peptides was discussed.