. Elements of human physiology. Physiology. Leucine 'cones' (imperfect crystals) Tyrosine crystals (Frey). (Frey) digests, often crystallising out spontaneously at the bottom of the liquid. It forms only 2-3 per cent, of the original protein. Aspartic acid (amino-succinic acid CoH,((COOH).^) is also formed in small quantity in the pancreatic digestion of proteins. It forms, however, the greater part (35 per cent.) of the amino-acids obtained by digestion of the proteins of wheat. Antipeptone is a name which has been given to the precipitate obtained by treating the digest with phospho- mo
. Elements of human physiology. Physiology. Leucine 'cones' (imperfect crystals) Tyrosine crystals (Frey). (Frey) digests, often crystallising out spontaneously at the bottom of the liquid. It forms only 2-3 per cent, of the original protein. Aspartic acid (amino-succinic acid CoH,((COOH).^) is also formed in small quantity in the pancreatic digestion of proteins. It forms, however, the greater part (35 per cent.) of the amino-acids obtained by digestion of the proteins of wheat. Antipeptone is a name which has been given to the precipitate obtained by treating the digest with phospho- molybdic acid, after separation of the chief amino-acids. Although it gives the biuret test, it does not give any colora- tion with Millon's reagent, and is not properly included in the class of peptones. It is probably a mixture of bodies, including the bases, lysine and arginine, the former being diamino-caproic acid C,r,H,, (NH^).^ COOH, and the latter a body analogous to creatine and giving rise, like creatine, to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Starling, Ernest Henry, 1866-1927. Chicago : W. T. Keener
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