INDEX 



Phosphotungstic precipitation test for proteose 



(v. Aldor), 427 



Physiological constituents of urine, 369 

 Phytase, 5 

 Phytin, 5 



Picric acid reaction for creatinine (Jaffe), 385 

 Pigments of urine, 359, 370, 399, 451 

 Pine wood test for indole, 219 

 Piria's test for tyrosine, 86 

 Plasma of blood, 245, 268 



of muscle, 339, 347 

 Plasmaphaeresis, 249 

 Polariscope, use of, 31 



in detection of conjugate glycuronates, 



443 



in determination of dextrose, 31, 531 

 /3-hydroxybutyric acid, 442, 541 

 Polypeptides, 66, 71, 95 

 Polysaccharides, 20, 43 

 classification of, 20 

 properties of, 43 



Posner's modification of biuret test, 100 

 Potassium in urine, 370, 409 



quantitative determination of, 562 

 Potassium hydroxide test for blood in urine 



(Heller), 429 

 indoxyl-sulphate (see Indican, pp. 212, 387, 



542) 



formula for, 212, 387 

 origin of, 212, 386 

 tests for, 387 



Primary protein derivatives, 94, 114 

 Primary proteoses, 119 

 Products of protein hydrolysis, 66, 67, 71 

 Prolamins, 93, in 



classification of, 93 

 preparation of, 112 

 tests on, 112 

 Proline, 65, 67, 68, 83, in, 142, 186 



crystalline form of copper salt of, 84 

 crystalline form of laevo-a-, 84 

 Prosecretin, 185 

 Protagon, 353, 354 



preparation of, 356 

 structure of, 355 



Protamines, classification of, 93, 95 

 Proteans, 94, 114 

 Protease, gastric, 5, 12, 141 



experiments on, 12, 144 

 pancreatic, 5, 12, 186 



experiments on, 12, 189 

 vegetable, 5, 13 

 Proteases, 5, 12 



experiments on, 12 



Protective enzymes (see defensive enzymes), 3 

 Protein content of foods, 569 



derivatives, primary, 65, 94, 114 



secondary, 65, 94, 118 

 metabolism, time relations of, 569 



influence of water on, 575 

 utilization, determination of, 590 

 Protein-coagulating enzymes, 5, 143, 189, 256, 315 

 Protein-cystine,' 77 

 Protein-sparing action of fat and carbohydrate, 



579 

 Proteins, 63, 92, 412, 422 



acetic acid and potassium ferro-cyanide test 

 for, 104 



Proteins, Acree-Rosenheim test on, 100 

 action of alkaloidal reagents on, 103 

 of metallic salts on, 103 

 mineral acids, alkalies and organic acids 



on, 103 



Bardach's reaction on, 101 

 biuret test on, 98 

 chart for use in review of, 121 

 chemical composition of, 63 

 classification of, 93, 95 

 coagulated, 94, 116 



biuret test on, 118 

 formation of, 116 

 Hopkins-Cole reaction on, 118 

 Millon's reaction on, 118 

 solubility of, 118 

 xanthoproteic reaction on, 118 

 quantitative determination of, 327 

 coagulation, influence of salts upon, 117 

 coagulation or boiling test for, 105 

 color reactions of, 97 

 conjugated, 94, 95, 112, 123 

 classes of, 94, 112 



experiments on, 59, 113, 128, 296, 321 

 nomenclature of, 94, 112 

 occurrence of, 94, 112 

 decomposition of, 64, 67, 68 

 by hydrolysis, 65 

 by oxidation, 64 

 products of, 64, 67, 68, 71 

 experiments on, 85 

 separation of, 85 

 study of, 64, 67, 85 

 derived, 94, 114 

 formation of fat from, 179 

 formulas of, 64 

 Heller's ring test on, 103 

 Hopkins-Cole reaction on, 98 

 importance of, to life, 63 

 in urine, 412, 422 



determination of, 531 

 test for, 423 



Liebermann's reaction on, 100 

 Millon's reaction on, 97 

 of milk, 315, 318 

 molecular weights of, 64 

 Posner's reaction on, 100 

 precipitation of, by alcohol, 106 

 alkaloidal reagents, 103 

 metallic salts, 103 

 mineral acids, 103 

 precipitation reactions of, 102 

 quantitative determination of, in milk, 328 

 review of, 121 

 Robert's ring test on, 104 

 salting-out experiments on, 105 

 salts of, 102 



scheme for separation of, 122 

 simple, 93, 95 

 synthesis of, 66, 70 

 xanthoproteic reaction on, 98 

 Proteolysis, peptic, 142 



tryptic, 142, 1 86 



Proteolytic enzymes (see Proteases, p. 12) 

 Proteose, 64, 94, 95, 118 



v. Aldor's method for detection of, 427 

 biuret test on, 120 

 coagulation test on, 120 



