95 



Carotenes and Carotenoids 



160 Azafrin (Escobedin), C27H;{s04, orange crystals, m.p. 213°, 



h]iu 



-75° (c 0.28 in alcohol), U.V. 428, 458 m^i in 



chloroform. 



COOH 



161 



Mycobacterium phlei 



Mary A. Ingraham and Harry Steenbock, Biochem. J. 29 

 2553 (1935). 



Richard Kuhn, Alfred Winterstein and Hubert Roth, Ber. 

 64A 333 (1931). 



Torularhodin (May = Lusomycin), C:^7H4s02, red needles, m.p. 

 202° (vac.) (dec), U.V. 554, 515, (483) m/A in chloro- 

 form. 



COOH 



Rhodotorula rubra, R. sanniei 



The yield from R. sanniei was 2900 y per gram of dry 

 cells. Also obtained were torulene (143 y per gram) and 

 ^-carotene (10 y per gram) and traces of y-carotene and 

 lycopene. 



Edgar Lederer, Bull. soc. chim. biol. 20 611 (1938). 



Claude Fromageot and Joue Leon Tchang, Arch. Mikrobiol. 

 9 424 (1938). 



L. Nogueira Prista, Congr. Luso-Espan. farm. 2 274 (1952). 

 (Chem. Abstr. 48 13807a) 



R. Entschel and P. Karrer, Helv. Chim. Acta 42 466 (1959). 



162 Astacin (3,4,3',4'-Tetraoxo-/3-carotene), C4,jH4s04, violet, metal- 

 loid needles, m.p. 240-243°, U.V. 500 m^x in carbon disul- 

 fide. 



^^^ 



Mycobacterium laticola 



