ABSORPTION SPECTRA OF THE CAROTENOIDS 



661 



400 420 440 460 480 500 520 540 

 WAVE LENGTH, n\^ 



Fig. 2 1.35 A. Alisorption spectrum of 

 fucoxanthol in hexane (after Wald 1942). 

 (For a different curve for the same solution 

 see fig. 21.36.) 



c 

 o 

 o 



400 450 



WAVE LENGTH, m,i 



500 



Fig. 21.35B. Absorption spectra of 

 diatoxanthol, diadinoxanthol, neodia- 

 dinoxanthol, zeaxanthol and luteol (after 

 Strain, Manning and Hardin 1944). 



3.2- 



o 



S 2.7 



a 

 o 

 o 



2.2 



L7 



250 



500 550 



300 350 400 450 



WAVE LENGTH, m/x 

 Fig. 21.36. Specific absorption coefficients of fucoxanthol in hexane and 

 violaxanthol in ethanol (after Karrer and Wtirgler 1943). Concentration in 

 g./lOO cc. 



