LIGHT ABSORPTION CURVES OF SOME CAROTENOIDS 355 



3.6 



3.1 



2.6 



?.1 



230 



300 



350 



WO 



450 



Fig. 18. Crocetin dimethyl ester in ethanol 

 Helv. chim. Acta 26 (1943) 120 



500 



500 



Fig. 19. Methylbixin in hexane 

 Z. angew. Chem. 47 (1934) ^62 



