Light absorption curves of some carotenoids 



Fig. 4. Lycopene in hexane* 

 Z. angew. Chem. 4j (1934) 664 



logt. ' 



5.0 



4.5 



i.O 



3.5 





300 



350 



400 



450 



500 



■ X in rrtL 



Fig. 5. y-Carotene in hexane (- 



Ber. 66 (1933) 408 



and carbon disulphide (- 



* b' is the molar extinction coefficient given by e' = 2.3/c/ x log (lo/I), where lo = intensity 

 of incident light, 1= intensity of transmitted light, c~ concentration in gm.-mols/l, and 

 ^= cell length in cm. 



