

464 



INDEX 



Plant hormones, 406, 407 

 Plant metabolism : 



glycolysis in, 405 



Krebs cycle in, 405 



organic acids in, 405 

 Plant nutrition : 



effects of mineral deficiencies, 409, 410 



mineral elements for, 407 

 Plant respiration, true oxidases in, 404 

 Plants : 



nitrogen nutrition* of, 400-402 



respiration of. 404-^05 

 Plasmalogens, 101 

 Polarimeter, 24 

 Polarized light, 24 



Polished rice, relation to thiamine de- 

 ficiency. 228 

 Polymyxin, 122 



bacterial spectrum of, 370 



components of. 370 



toxicity of, 370 

 Polyneuritis, 227 

 Polyphosphatases, 264 

 Polysaccharides : 



molecular weights of, 50 



production by bacteria, 378 



properties of, 51 



structure of. 50, 51 

 Polyuronides, 21 

 Porphyrins : 



biosynthesis of, 351 



prosthetic groups of enzymes, 278 

 Porphyropsin, 204 



Potassium content of foods, table, 439 

 Potassium deficiency, effect on plants, 



409, 410 

 Potassium, in animals, 183 

 Pressin {see Vasopressin) 

 Progesterone : 



effect on uterus, 294 



physiological functions, 292-295 

 Prolactin, 305 

 Proline : 



biosynthesis from glutamic acid, 346 



formula, 120 

 Propanolamine, from vitamin Bjo, 250 

 Propionibacterium pentosaceum, 363, 377 

 Propionic acid, 77 



Propionic acid fermentation, 363, 377, 382 

 6-Propyl-2-thiouracil. 300 

 Prosthetic group. 111, 136 

 Protamines : 



nucleoproteins and, 153 



properties of. Ill 

 Protein-bound iodine. 298. 299 

 Protein content of foods, table, 434 

 Protein foods, use in correcting over- 

 weight, 429 

 Protein, human reciuirements for, 347 

 Protein metabolism, 341-354 



link to carbohydrate metabolism, 342, 

 343 

 Proteinases, 265 



of bacteria, 265 



specificity, 315-316 

 Proteins, 103-149 



Proteins (Cont.) : 



amino acid composition, 122, 124 



classification, 110 



coagulation, 145 



color tests, 142 



commercial, 103 



conjugated. 111. 136 



criteria of purity, 107 



crude, definition, 146, 434 



crystalline, 104 



denaturation of, 144 



derived. 111 



determination, 146 



economic importance, 103 



elementary composition, 75. 109 



half-life period in tissues, 347 



hydrolysis, 122 



isolectric pH. 144 



linkages in. 131 



molecular weights, 141 



number. 104 



occurrence, 104, 108 



physiological fuel value of, 423, 424 



precipitation, 143 



preparation. 104 



products on hydrolysis, 111, 113 



simple. 111 



solubility. 111 



structure, 133 



table of common, 108 

 Proteus vulgaris. 369 

 Prothrombin, 219, 220, 221 

 Protochlorophyll. 390 



formula, 391 

 Protomone (iodinated casein), 298 

 Protoplasm, 6 



Proximate composition, definition of, 423 

 Pseudomonas aeruginosa, 381 

 Pseudomonas putida, 358 

 Pseudomonas saccharophila, 399 

 Pseudomonas sp., 370 

 Pteroic acid, 359 

 Pteroylglutamic acid, 246-249, 359 



stability of, 249 

 Pterovlglutamic acid deficiency, symptoms 



of, 248 

 Pteroyltriglutamic acid, 131 

 Ptyalin, 58, 263 

 Purines, 154-157 



biosynthesis of, 351 



formula of, 154 



list of. 154 

 Putrescine, 260, 321 

 Pyranose ring forms of sugars, 26 

 Pyribenzamine : 



antihistamine drug, 289, 290 



formula, 290 

 Pyridine nucleotides, as hydrogen car- 

 riers, 332, 333 

 Pyridine-3-sulfonic acid, as nicotinic acid 



antagonist, 256 

 Pyridino coenzymes, 275 

 Pvridino proteins, 268 

 Pyridoxal, 243 

 Pyridoxal phosphate. 243. 279 



coenzyme for transamination, 343 



i 



