INDEX 



453 



Chyniotrypsin : 



amino acid composition, 124 



classification, 265 



in pancreatic secretion, 315 

 Chymotrypsinofien, conversion to chymo- 



trypsin, '^10 

 Vis- and trans- isomers, 79 

 Citric acid, 161 



mechanism of formation, 372 



])roduction of. 363 

 Citric acid cycle, 330. 332, 380 



enerjiy from, 410. 421 

 Citrovaiiiin factor, 248 

 ('itrnlline, formula. 120 

 Clostiidiiint aceiohHfiflicinii : 



butyric acid formation by, 377 



fermentation pi-oducts of. 36.3 



growth efficiency of, 123, 360, 361 



growth factors for, 359 

 Clostridium acidiurici, 359 

 Clostridium buti/licum, 363 

 Clostridium, nitrogen fixation bv, 403, 



404 

 Clostridium snccharohutyricum. 363 

 Clostridium tetani. 359 

 Clupanadonic acid, SO 

 Cobalamin, 251 

 Cobalt : 



in hemoglobin formation, 188 



in vitamin Bjo. 189 

 Cobalt deficient areas, 188 

 Cocarboxylase, 227, 273 

 Cocoanut oil. composition, 82 

 Codecarboxylase, 243 



Coenzyme I {see Diphosphopyridine nu- 

 cleotide) 

 Coenzyme II (see Triphosphopyridine nu- 

 cleotide) 

 Coenzyme A, 240 



growth factors and, 359 



structure of, 274 

 Coenzyme R {see Biotin) 

 Coenzymes : 



as activators, table. 266-268 



as i)rosthetic groups, 262 



ex.imples of, 273-280 



hydrogen carrying, 332, 333 



reduction of by light energy, 394, 395 

 Coleoptiles, bending of by plant hormones, 



406 

 Comb growth, effect of androgens on, 296 

 Composition of food : 



variations in. 433 



tables, 433-448 

 Configuration of stereoisomers, 23 

 Conjugases, 265 



Conjugated double bonds, 390, 391 

 Constipation, in thiamine deficiency, 228 

 Copper : 



compounds in living cells, 179, 186 



destruction of vitamin C by. 226 



enzymes containing. 186 



human requirement for, 188 



in foods, table, 442 



role in hemoglobin formation, 187 

 Coprogen, 360 



Coprophagy, 322 



Cori ester {see D-Glucose-1-phosphate) 



Corn sirup, 29 



composition of, 57 

 Corpus luteum, 293 

 Corticosterone, formula, 290 

 Cortisone : 



formula, 290 



physiological effects of, 291 



synthesis of, 292 

 Coumarin, 221 

 Cream of tartar. 161 

 Creatine, biosynthesis of, .348, 349 

 Creatine phosphate (CrP) : 



amount in muscles, 418 



relation to muscle contraction, 415, 416 



structure of, 349 

 Creatine transphosphorylase, 267 

 Cretinism, 299 

 Crotonic acid, 76 

 Cryptoxanthine, 207 

 Cushing's syndrome. 291 

 Cyanide group, in vitamin Bjo. 250, 251 

 Cyanocobalamin, 251 

 Cystathionine, .344, 345 



formula, 118 



in cystine synthesis, 122 

 Cysteine, formula. 117 

 Cystine, 115 



biosynthesis of, 345 



formula. 117 

 Cytidine. 156 

 Cytidylic acid, 156 



Cvtochrome c, as electron carrier, 279, 

 282, 283 



formula, 279 



iron content of, 139, 279 



protein nature of, 139 



role in hydrogen transport, 333, 334 



role in oxidation, 282-283 

 Cytochrome oxidase, 268, 334 

 Cytochrome system, 332, 333, 404 

 Cytochromes, 139 

 Cytosine, 154-158 



D 



2, 4-D, formula of, 407 

 Dark adaptation, with vitamin A, 204 

 Dark reactions of photosynthesis, 393 

 Deamination of amino acids. 351 

 Decarboxylases. 266 

 Decarboxylation, bacterial, 321 

 Dehydroascorbic acid, formula, 224 

 Dehydrocarolic acid, 375 

 7-Dehydrocholesterol, 95 

 11-Dehvdrocorticosterone, formula, 290 

 Dehydrogenases, 2(i2, 282 

 Denaturation of proteins, 144 

 Denatured proteins, properties of, 145 

 Denitrification, 402 

 Dental caries, 193 

 Derived proteins, 112 

 Dermatitis, of pellagra, 235, 236 

 Desmolases, 266 

 Desoxycholic acid, 317 

 11-Desoxycorticosterone, formula, 290 



