982 



SUBJECT INDEX 



?/i-Xylohydroquinone, vitamin E biopo- 



tency, 826 

 7>-Xyloh3'dioquinonc, vitamin E biopo- 



tency, 826 

 m-XjdotocophoroI, biopotency, 821 



Yeast 



ascosterol in, 361 



astacene in, 588 



faiotene.s, in 524, 541 



compo.sition of lecithin in, 426 



cryptosterol in, 361 



flihydioeigosteiol in, 359 



episterol in, 361 



ergosterol in, 357, 745, 746 



fecosterol in, 361 



glycerophosphatase in, 434 



neosterol in, 361 



red, astacene in, 588 



spliingomyelin in, 466 



squalene in, 401 



zymosterol in, 361 

 Yellowtail liver oil, vitamin A in, 



676 

 Yew fruit, j8-carotene in, 523 



rhodoxanthin in, 574, 575 



Zamene, 402 



Zeaxanthin, 561-566 

 absorption spectra, 611 

 adsorption order, 660 



derivatives, 563-566 



disco \cry, 553 



extinction coefficient, 619 



lutein and, 553, 554 



molecular extinction ciux (\ 617 



occmrencp, 553, 562, 563 



possible stereoisomers, 627 



properties, 605 



solubility, 619 



structure, 555 

 Zeaxanthin diacetate, 564 

 Zeaxanthin dibutj'rate, 564 

 Zeaxanthin di-?i-caproate, 564 

 Zeaxanthin di-n-caprylate, 564 

 Zeaxanthin di-epoxide (see Vuildxanlhin) 

 Zeaxanthin dilaurate, 564 

 Zeaxanthin dipropionate, 564 

 Zeaxanthin distearate, 564 

 Zeaxanthin di-/i-valerate, 564 

 Zeaxanthin esters, melting points, 564 

 Zeaxanthin mono-epoxide (see Anihcm- 



xanlhin) 

 Zeaxanthin monopalmitate, 564 

 Zeaxanthin palmitate as phy.salien, 398 

 Zeolite, adsorbent action, 658 

 Zeorin, as probable triterpene, 387 

 Zinc chloride, reaction with vitamin A, 



732 

 Zinnia, phytofluene in, 662 

 Zoomaryl alcohol (see 9-He.xndecenol) 

 Zooplankton, fat composition, 186 

 Zoosterols, 321 



Zwitterion behavior of lecithin, 418 

 Zvmosterol, 361 



