INDEX 



167 



Phenol, 38. 

 Phenylalanine, 14. 

 amounts of, in proteins, 



22, 23. 



catabolism of, 103. 

 relation of, to homogen- 



tisic acid, 115, 116. 

 Phosphoproteins, 7. 

 Plastein formation, 68. 

 Plastic foods, 84. 

 Polypeptides, 10, 25. 

 action of enzymes upon, 



26. 

 value of, in amino acid 



mixtures, 129. 

 Proline, 17. 

 amounts of, in proteins, 



22, 23. 

 dextrose formation from, 



112. 



in blood, 55. 

 Protamines, 6. 

 Proteans, 8. 

 Protein, action of enzymes 



in synthesis of, 67, 69. 

 as a complex polypeptide, 



26. 



definition of, 2. 

 fate of ingested, 58. 

 free milk, 143, 144, 145, 



146, 149, 155. 

 molecular weight of, 3. 

 molecule, 2. 



molecule, structure of, 24. 

 metabolism, theories of, 

 81. 



Protein, regeneration, place 



of, 62. 



sparers, 127, 132, 133, 138. 

 synthesis, by intestinal 



bacteria, 133. 



synthesis, by intestine, 62. 

 synthesis, from amino 



acids, by tissues, 78. 

 synthesis, role of leuco- 

 cytes in, 66. 

 synthesis, role of liver in, 



129. 



Proteins, and growth, 148. 

 as colloids, 2. 

 classification of, 3. 

 characteristics of, 5. 

 composition of, 2. 

 conjugated, 4, 7. 

 crystallization of, 2. 

 derived, 4, 8. 

 influence of, on plane of 



polarized light, 3. 

 occurrence of, 5. 

 quantities of amino acids 



yielded by, 22. 

 simple, 4, 5. 

 specific dynamic action 



of, 120. 



Proteose, in blood, 50. 

 Proteoses, 9, 10. 

 action of erepsin on, 34. 

 and peptones, in blood, 59. 

 in gastric digestion, 31. 

 in intestinal putrefaction, 



37. 

 Ptomaines, 117. 



