SUBJECT INDEX 



945 



Lauronitrile, melting point, 141 

 Lauryl alcohol, boiling point, 307 



density, 307 



freezing point, 307 



occurrence, 308 



Bolubility, 317 

 Lauroyl chloride, constants, 146 

 Lauryl myristate, in spermaceti, 371 



melting point, 362 

 Lauryl palmitate, melting point. 119 

 Laurjd stearate, in spermaceti, 371 



melting point, 362 

 Lawsone, vitamin K biopotency, 850, 851 

 Lead soaps, solubilitj', 69, 70 

 Lead tetraacetate (Criegee's reagent), 



160 

 Leaves, carotenes from, 518-520 

 Lecithin, 408-439 



antioxidant effect, 296 



bile salt-lecithin combination, 416 



definition, 4 



discovery, 407 



enzyme hydrolysis, 421-424 



fatty acid composition, 424-426 



glycerophosphate from, 432-437 



glycerylphosphorylcholine from, 437. 

 438 



hj'drolecithin and, 439 



internal anhydride from, 419 



iodine numbers, 417 



a- and /3-lecithin, 408, 409 

 distribution, 409, 410 



myelin forms, 416 



phosphorylcholine from, 438, 439 



preparation, 411-413 



properties, 414-419 



separation of a- and /3-lpcithin. 412. 413 



solubiHty, 415, 416 



specific rotation, 418 



.'-■ynthesis, 413, 414 

 a-Lecithin, distribution, 409, 410 



separation from ^-lecithin, 412, 413 



structure, 408 



synthesis, 413, 414 

 j8-Lecithin, distribution, 409, 410 



separation from a-lecithin, 412, 413 



structure, 408 



synthesis, 414 

 Lecithinase A, action, 421, 422 



cobra venom and, 421 



in pancreas, 422 



rattlesnake venom and, 422 



water-moccasin and, 422 



Lecithinase B, action 421, 423 



distribution, 423 



glycerylphosphoiylcholine formed by, 

 437 

 Lecithinase C, action, 421 

 Lecithinase D, action, 421 



in Clostridium loelckii, 423, 424 



phosphorylcholine from, 438 

 Leeches, provitamin D in, 747 

 Leopard bane flowers, helenien in, 559 



physalien in, 559 



zeaxanthin in, 562 

 Lettuce, carotenes from, 518 



vitamin K in, 830 

 Leucocytes, cerebrosides in, 474 

 Levene method for sphingomyelin prep- 

 aration, 456 

 Levulinaldehyde from vitamin K2, 837 

 Licanic acid, discovery, 29 



properties, 31, 32 

 Lignoceric acid, 495, 496 



content in vegetable fats. 204. 208, 496 



discovery, 12 



from ganglioside, 504 



in cerasine, 475, 476 



in sphingomyelins, 455, 456, 466 



long spacings, 97 



physical constants, 45 



properties, 496 



structure, 495, 496 

 Lignoceric anhydride, melting point, 135 

 Lignocerjd alcohol, boiling point, 307 



density, 307 



freezing point, 307 



in cotton wax, 376 



in tree bark waxes, 379 



in wool fat, 370 



long spacings, 317 



occurrence, 308 

 Lignocerylsphingosine, 460, 461 



from sphingomj'elin, 455, 456, 460 

 Lignocerylsphingosine fatty acid esters, 



properties, 465 



synthesis, 456, 464, 465 

 Lily-of-the-valley (berries), a-carotene in, 

 535 



/3-carotene in, 523 



7-carotene in, 540 



lutein ester in, 557 



Ij'copene in, 544 

 Linderic acid, discovery, 14 



physical constants, 46 



