462 



INDEX 



Nucleoproteins (Cont.) : 



occurrence of, 150 



preparation of, 151 



proteins of, 153 



relation to chromosomes, 150, 151 



types of, 152 



virus, 153 

 Nucleosidases in digestion, 319 

 Nucleoside phosphorylases, 207 

 Nucleosides, 156 

 Nucleotidases in digestion, 318 

 Nucleotides, 156-158 



structure of, 158 

 Nutrition, objectives and methods, 3 

 Nylon from pentosans via furfural, 53 



O 



Obesity, 427-429 



cause of, 428 



relation to varying food needs, 429 

 Octapine, formula, 120 

 Oils, fatty, hardening of, 89 

 Oleic acid : 



cis-trans isomers of, 79 



formula, 79, 80 

 Oleyl alcohol, 93 



Omega oxidation of fatty acids, 337 

 Opsin, 204 

 Optical activity, 24 

 Optical rotation, 24 

 Organic acids in plants, metabolism of, 



405 

 Ornithine, 321 



bacterial decarboxylation, 321 



formula, 121 



from glutamic acid, 346 

 Ornithine cycle, 352-354 

 Osazone crystals, 47 

 Osazones, 31, 32 

 Osmotic pressure, 181, 182 

 Osteomalacia, 202 

 Ovarian hormones, 292, 293 

 Overweight : 



cause of, 428 



correction of. 429 

 Ovovitellin, 108, 126 

 Ovulation, 293 

 Oxalacetate carboxylase, 266 

 Oxalacetic acid : 



in citric acid cycle, 330, 331 



source of, for citric acid cycle, 332 

 Oxalacetic transaminase, reaction cata- 

 lyzed by, 343 

 Oxalates, soluble, toxicity of, 161, 162 

 Oxalic acid, occurrence in foods, 161 

 Oxalosuccinic acid, 331 

 Oxalosuccinic carboxylase, 266 

 Oxidases, 268 



in plants, 404 

 Oxidation, definition of, 419 



metabolic, by hydrogen removal, 332 



multiple alternate, of fatty acids, 337, 

 338 



of fatty acids, 336-339 



of glucose, direct, 380 



of glucose, nonphosphorylative, 381 



Oxidation (Cont.) : 



of organic matter on earth, 387 

 of sugar alcohols, 364 

 omega, of fatty acids. 337 

 Oxidation-reduction carriers, 275-279 

 Oxidation reduction potential, definition 



of, 419 

 Oxidation-reduction, principles of, 419. 



420 

 Oxidative deamination, 351, 352 

 Oxide-ring forms of sugars, response to 



reducing sugar tests, 30 

 Oxide-ring formulas of sugars, alpha and 



beta forms, 25 

 Oxygen isotope, use as tracer, 392 

 Oxygen production, in photosynthesis, 



388, 392 

 Oxyhemoglobin, 105, 138 

 Oxytocic hormone, 295 

 Oxytocin, 303, 304 



PABA (see Para-aminobenzoic acid) 

 Paint, unsaturated oils for, 89 

 Palmitaldehyde, 101 

 Palmitic acid, in waxes, 93 

 Palmitoleic acid, 80 

 Pancreas, 300 



hyperglycemic factor of. 303 



in carbohydrate metabolism, 300-.'i03, 

 327 

 Pancreatic amylases, 263, 316 

 Pancreatic digestion. 315 

 Pancreatic lipase, 316 

 Pancreatic secretion, hormonal control of, 



308 

 Pancreozymin, 308, 316 

 Pantatheine, 359 

 Pantathenic acid, 359 



formula, 240 



in foods, table, 447-448 



physiological function, 239 

 Papain, 265 



Paper chromatography, 396 

 Paper making, 61 

 Paper pulp. 61 

 Para-aminobenzoic acid (see p-Amino- 



benzoic acid) 

 Parathyroid secretion, effect on blood 



calcium, 183 

 Parietal cells. 312 

 Pectin, 64, 65 

 Pectinase, 263 

 Pellagra, 235, 236, 237, 238 



relation to corn as food, 237 

 Penicillamine, 122 



formula, 118 

 Penicillin, 122 



activity of, 374 



formula of, 374 



industrial production of, 372 



mode of action of, 374 



precursors of, 374 



range of activity, 374 



resistance of bacteria to. 374 

 Penicillinase, 265 



