588 



CHEMISTRY OF THE PROTEIDS 



Albumin- : 



derivatives, 4 



equivalent weight, 222 



ester-like compounds, 139 



halogen-compounds, 82 



HCN-content, 86 



+ heavy metals, 303 



hydrogen- atom, replaceable, 98 



jellies, 338 



neutral salts, 280, 290 



nucleus of, 151 



of castor-oil seed, 371 



oxidation, 86, 92. See also under 

 this heading, 240-248 



pluriacid nature, 147, 218 



pluribasic nature, 147 



purity of, 69 



quantitative composition, 65 



reactions, 5 



salts of, 208 



salts with metals, 223 



soluble, 375 



solubility in alcohol, 12, 224 



sulphate, 224 



trypsin, action on, 144 

 Albuminic acid, 225, 317 

 Albuminoids, 4, 349 

 Albumoids, 576 



Albumoses, 13, 170, 178; general account, 

 173 ; normally occurring albumoses, 

 205 ; secondary albumoses, 174- 

 175 ; + alcohol, 91 



alkali-albumoses, 201-202 



biuret-test, 143 



chlorides, 176 

 formation of : 



by acids, 199 



by alkalies, 201 



by heat, 202 



by peptic and tryptic digestion, 

 178, 199 



gelatine -albumoses, 561 



+ heat, 320 



Pick's albumoses, 180 



poisonous properties of, 206 



reaction, 224 



Alcaptonuria, 109, 113, 114 

 Alcohol, 116, 123, 124, 187, 192 



+ acetone, 192, 193 



amphoteric character, 208 



action on albumins, 341, 375 



on azides, 123 



on oxyprotein, 249 



precipitating power, 12, 174 



for preparing hsemoglobin, 471 



-radicals in amino-acids, 126 



for separating proto- and hetero-albu- 

 mose, 179, 183 



solvent of salts of albumin, 12, 224 

 Aldehyde, 92, 123, 124 



absence in albumins, 97, 152 



-albumins, 204 



-glyceric acid, 64 

 Aliphatic acids, 104 



Alkalies : 



action on albumins, 90, 150, 337 



as coagulants, 307 

 Alkali-albumin ates : 



artificial, 91, 201, 317, 337, 393 



normal, 339 



Alkaline earths, as coagulants, 298, 307 

 Alkali nitrites, action on albumins, 95 



-salts, action on albumin, 280 

 Alkaloidal reagents, 14, 342 

 Alkyl-radicals, 212 

 Allantoin, 100, 437 

 Alloxan, 427, 429 

 Alloxur-bases, 429 

 Aluminium hydroxide, 209 

 Amid-nitrogen, 76, 96, 99, 243 

 Amides and biuret-reaction, 140 

 Amide-splitting ferments, 112 

 Amidine, 100 



determination of, 77 



acet-aldehyde, 124 

 Amino- : 



acetic acid, 28 



acetyl - bisglycyl - amino - acetic acid 

 ethyl-ester, 116 



acety 1-pentagly cyl - amino - acetic acid 



ethyl-ester, 116 

 a-Amino-acids : 



active acids, method of preparing, 22 



amphoteric nature, 211 



anhydrides, 127\ 



aromatic amino - acids, changes in 

 digestion, 106, 114 



arrangement in albumin-molecule, 67" 



as bacterial food, 101 



characters of, 21, 24 " 



colloidal nature^ 124 



conversion of mono- " into di-amino- , 

 acids, 124 



coupling mono- with di- and oxy- 

 amino-acids, 129 



cuprates, 24 



dissociation of, 212 



distribution, 67 



estimation, 23 



formation : 



by pepsine, 190 



by trypsin, 148. See also under 

 Trypsin 



+ glucose, 64 



hydrolysis, 213 



interaction of NH 2 and COOH, 212' 



linking, 146 



by COOH-radical, 129 

 by NH 2 -radical, 129 



metabolism, 61 



method of separating, 23, 24 



NH 2 and COOH, relative strengths, 

 211, 212, 213 



NH 2 -radical, 127 



NH 2 -radical, inhibiting effect on 

 COOH, 212, 213 



NH 2 -radical, strengthening of, 128 



open chain compounds, 27 



