INDEX 



467 



2.4.5-T, formula of, 407 

 Tagatose, 24 

 Takadiastase. 58 

 Tartaric acid, 161 

 Taurine, in urine, 197 

 Tauroeholic acid, 96, 317 

 Tea. manganese in, 189 

 Teeth, fluorides and. 193 

 Teeth, mottled. 193 



relation of vitamin C to, 223 



relation of vitamin D to, 210 

 TcrDiohactcriitiii mohile, 363 

 Teropterin. 247, 249 

 Terramycin : 



formula of, 367, 368 



mode of action. 369 



range of activity, 368 

 Terre.strie acid. 375 

 Testosterone. 295, 297 

 Tetan.v. relation to calcium. 183 

 Tetrahymena geleii, 360 

 Tetronic acid, 375 

 Tetroses. 20 

 Theobromine, 155 

 Theophylline, 155 

 Thiamiiiase, 229, 266 

 Thiamine : 



destruction during food preparation, 229 



determination of, 229, 230 



food sources, 230 



formula. 229 



human requirements, 230. 231 



in fat synthesis. 340 



in foods, table. 447--448 



physiological function, 226, 227. 228 



required by microorganisms. 356 



requirements, factors modifying. 228 

 Thiamine deficiency, prevalence of, 228 

 Thiamine pyrophosphate, 227 

 Thiazole. 359 

 Thiochrome method, for thiamine assay, 



229 

 Thioctic acid, 360 

 Thiouracil, as antithyroid drug, 300 

 Threonine, 113 



formula. 116 

 Threose, 20 

 Thymidine, 156 

 Thymidylic acid, 156 

 Thymine. 154-157 



pterovlglutamic acid activity of, 249 

 Thyroglobulin, 298 

 Thvroid deficiency. 299 

 Thyroid hormone. 297-300 

 Thyrotropic hormone, properties of, 307 

 Thyroxine. 297-300 



formula, 118 

 Titration, 163, 165 

 Tobacco mosaic virus, 110, 126. 153 

 Tocopherol, apha, formula, 218 

 Tocopherols. 217 



as antioxidants. 90 



content of foods. 218 

 TPN (see Triphosphopyridine nucleotide) 



TPN-cytochrome c. reductase, 268 

 Trace elements, 176 

 Transaminases, 268 

 Transamination, 343 



in plants, 401, 402 

 Transglucosidases, 269 

 Transmethylation, 343 

 Transphosphorylases, 267 

 Traumatic acid, 406 

 Trehalose, 41 

 Tributyrin, 83, 84 

 Tricarboxylic acid cycle, 330 

 2.4.5-Trichlorophenoxyacetic acid, 407 

 Trimethylamine. 162 

 Triolein, 83 



Triosephosphate isomerase, 267 

 Trioses, 20 

 Tripalmitin. 83 

 Triphosphopyridine nucleotide (TPN) : 



forms of, 275 



function in cytochrome system, 332, 

 333 



relation to nucleotides, 158 



role in tissue oxidation. 282 



structure of, 276 

 Tristearin, 83 

 Trypsin, 285 



in pancreatic secretion, 315 

 Trypsinogen, conversion to trypsin, 316 

 Tryptophan : 



bacterial degradation of, 320 



conversion to niacin in vivo, 347 



formula, 120 

 Tuberculin, 153 

 Turacin, 186 

 Tyramine, 321 

 Tyrosinase, 268 

 Tyrosine : 



as hormone precursor. 349 



bacterial decarboxylation of, 321 



biosynthesis, 346 



crystals of, 114 



formula. 117 

 Tyrothricin : 



components of, 370 



toxicity of, 370 



U 



Ulcers, 314 



Ultraviolet light and vitamin D, 212, 215 



Units : 



of penicillin, 374 



of vitamin A, 210 



of vitamin D. 216 

 Unsaturated fatty acids, in nutrition, 79 

 Uracil, 154-156 

 Urea : 



as nitrogen fertilizer, 400 



synthesis of, 352 

 Urease. 265 



Uric acid, as nitrogenous waste product, 

 353 



formation of, 155 



formula of, 155 

 Uridine, 156 

 Uridine diphosphate glucose, 280 



