SUBJECT INDEX 



749 



Diphosphoesterase, effect on coenzyme 



A, 604 

 1 ,3-Diphosphoglyceraldehyde, 498-499 



oxidation of, 496-497 

 Diphosphop3a-idine nucleotide, 35, 39, 

 455, 604, see also Pyridine nucleo- 

 tides 



biosynthesis of, 506 



effect on choline oxidase, 82 



estimation of, 509-511 



in coenzyme A assay, 603 



in fatty acid sj^nthesis, 619 



in oxidation of betaine aldehyde, 34, 36 



isolation of, 458, 482-484 



nicotinic acid in, 453, 480 



properties, 486^87 



structure 484-486 

 Diphosphothiamine, 17 

 Dipicrylamine, 



in acetylcholine isolation, 8 



in choline isolation, 7 

 Disease, vitamin D treatment of, 261 

 Docosahexaenoic acid, 



as essential fatty acid, 270 



effect in deficiency, 280 

 Dog, 



fatty acid deficiency in, 295-296, 307, 

 314 



niacin deficiency in, 553, 565-567 



pantothenic acid deficiency in, 663-664 

 Doryl, see Carbaminojdcholine 

 DPN, see Diphosphopyridine nucleotide 

 Duck, pantothenic acid deficiency in, 



661-662 

 Ducklings, choline deficiency in, 97 

 Dyspnoea, in rickets, 239 



E 



Eczema, serum fatty acids in, 303-305 

 Edema, in choline deficiency, 86 

 Edestin, effect in choline deficiency, 78 

 Egg, 



inositol in, 357 



niacin synthesis in, 532 



vitamin K in, 445 

 A5,8,ll ,14-Eicosatetraenoic acid, see 



Arachidonic acid 

 Elaidic acid, 69 

 Elaidolinolinoleic acid, 282 

 Electrodialysis, 9 



Eleostearic acid, conversion to other 



acids, 283 

 "Encephalopathy," in pellagra, 562 

 Enterokinase, 101 



Ephedrine, effect on choline oxidase, 36 

 Epicalciferol, 206, 207 

 Epicholesterol, 142 

 Epiergosterol, 206 



as provitamin D, 144 



synthesis of, 142 

 Epinephrine, 380, 381, 652 



formation of, 32 



vitamin B12 and, 85 

 Epiphysis, in bone formation, 233 

 Ergocalciferol, see Calciferol, vitamin D2 

 Ergosterol, 132, 135, 136, 137 



absorption spectrum of, 174 



as provitamin D, 139-140 



coenzyme A and, 623 



color reactions of, 189-191 



esters, as provitamin D, 143 



energy of activation, 176 



formation in plants, 156-158 



in invertebrates, 155-156 



in vitamin D estimation, 217 



irradiation of, 139-140, 212 



nitrite treatment of, 208-209 



occurrence, 153-154 



properties of, 183-189 



purification of, 183-184 



source in animals, 158 

 Ergosterone, 142 



Ergothionine, relation to choline, 2 

 Eryocalciferol, 132 

 Essential fatty acids, 384 



biochemical systems, 277-278 



biogenesis and metabolism, 280-286 



chemistry of, 268-277 



commercial preparations of, 272-273 



deficiency, 



histopathology of, 298-300, 309-310 

 in animals and insects, 292-300 

 in humans, 300-311 



estimation of, 



animal assay, 290-291 

 chemical methods, 288-289 

 enzymatic methods, 289-290 

 spectrophotometric methods, 286- 

 288 



