INDEX 



459 



Insulin (Cont.) : 



se(|uenoe of nmino acids in, 110, 132 



zinc in, IS!), 190 

 Insulin shock, 302. 327 

 Intermediary metabolism, 3S0 

 Intestinal absorption, 319, 320 

 Intestinal digestion. 315 

 Intestinal juice, enzymes in, 318, 319 

 Intestinal secretion, 31S 

 Intrinsic factor in pernicious anemia, 251 

 Inulin, 63 



Inversion of sucrose, 42, 43, 45 

 Invert su^ar. 42, 45 

 Invertase, 202, 263 

 lodinated proteins as source of thyroid 



hormone, 299 

 Iodine : 



human requirement for, 192 



relation to goiter, 192 

 Iodine content of foods, table, 442 

 Iodine number of fats, 88, 89 

 Iodine, radioactive, use in Grave's dis- 

 ease, 300 

 Iodized salt, 192 

 lodoijorgoic acid, 297, 29S 

 Ion antagonism, 185 

 Ion exchange resins, 16-17 

 Iron : 



absorption of, 320 



availability of various forms, 188 



compounds of in living cells, 179, 186 



content of foods, table, 442 



food sources of, 188 



human requirement for, 188 



storage of in body, 186 

 Irradiated milk, 214 

 Islets of Langerhans, 301 

 Isocitric acid, 331 

 Isocitric acid dehydrogenases, 268 

 Isocitric acid, dehydrogenation of, 333 

 Isocitric acid, oxidation energy from, 421 

 Isoelectric pH, 144 

 Isoleucine, formula, 116 

 Isopropyl alcohol, 377 

 Isotopic carbon as metabolic tracer, 339, 



340 

 Isotopic nitrogen (N^^) as metabolic 



tracer, 404 

 Isotopic tracer studies, 335, 345 



Jaundice, use of vitamin K in treatment 



of, 220 

 Jelly, pectin in, 65 



K 



Keratin, 110, 125 



a-Ketobutyric acid, from cystathionine, 



345 

 Ketogenic diets, 339 

 Ketogluconic acid. 304, 380 

 a-Ketoglutaric acid, 331, 342 



role in nitrogen fixation, 404 

 a-Ketoglutaric acid oxidation, energy 



from, 421 

 Ketoglutaric oxidase, 266 



Ketoheptoses, 21 

 Ketone bodies, 339 

 Ketose, definition, 19 

 Ketoses, 22 



differentiation from aldoses, 36 



Fehling's reaction with, 35 



test for. 30 

 Ketosis, 338, 339 



in diabetes, 301 

 17-Ketosteroids, 299 

 Ketotriose, 20 



Kidney, effect of phlorizin on, 302 

 Kilocalorie, definition, 413 

 Kjeldahl method, 146 

 Knoop's theory of fat catabolism, 336, 



337 

 Krebs cycle, 330 



in plants, 405 

 Krebs-Henseleit urea cycle, 352-354 

 Kynurenine, 347 



Lacteal, 319 

 Lactic acid : 



amount in muscles, 418 



bacterial production of, 363, 376. 377 



formation during violent exercise, 328 

 Lactic acid dehydrogenase, 268 

 Lactobacillus arahinosus, 358 

 Lactohacillus hulgaricus, 359 

 Lactohacillits casei, 359 

 Lactobacillus citrovorum, 359 

 Lactobacillus delbruckii, 363 

 Lactobacillus gaijonii, 363 

 Lactobacillus lijcopersici, 363 

 Lactobacillus pentoaceticus, 377 

 Lactogenic hormone, 125, 295 



properties of, 307 

 Lactoglobulin, 125 

 Lactosazone crystals, 47 

 Lactose, 48, 49, 263 



alpha and beta forms of, 49 



food value, 48 

 Lanolin, 94 

 Lanthioniiie : 



as source of cystine, 345 



formula of, 117, 122 



in subtilin, 122 

 Laurie acid, 77 

 Lead poisoning, treatment with vitamin 



C, 223 

 Lecithinases A and B, 98 

 Lecithins, 97 



with fat transport, 253 

 Legumin, 109, 125 

 Leucine, formula, 116 

 Leuconostoc citrovorum, growth factor 



for, 248 

 Leuconostoc niesenteroides, 378 

 Leucosin, 108, 109 

 Leucovorin, 248 

 Levans, 63, 379 



Levulinic acid, from hexoses, 26 

 Levulose, 33 



Light reactions of photosynthesis, 393 

 Lignin, 61 



