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This optical absorption measurement of Beta-carotene were made by R.-C. A. Fuh in the summer of 1995 using a Cary 3. The absorption values were collected using a spectral bandwidth of 1.0 nm, a signal averaging time of 0.133 sec, a data interval of 0.25 nm, and a scan rate of 112.5 nm/min.
These measurements were scaled to make the molar extinction coefficient match the value of 139,500cm-1/M at 451.0nm (Zechmeister, 1943; Zechmeister, 1962).
Dallinger, R. F., W. H. Woodruff and M. A. J. Rodgers (1981) The lifetime of the excited singlet state of b-carotene: Consequences to photosynthetic light harvesting. Photochem. Photobiol. 33, 275-277.
Dixon, J. M., M. Taniguchi and J. S. Lindsey (2005), "PhotochemCAD 2. A Refined Program with Accompanying Spectral Databases for Photochemical Calculations, Photochem. Photobiol., 81, 212-213.
Du, H., R.-C. A. Fuh, J. Li, L. A. Corkan and J. S. Lindsey (1998) PhotochemCAD: A computer-aided design and research tool in photochemistry. Photochem. Photobiol. 68, 141-142.
Tric, C. and V. Lejeune (1970) Les carotenes fluorescent-ils? Photochem. Photobiol. 12, 339-343.
Zechmeister, L. and A. Polgar (1943) cis-trans Isomerization and spectral characteristics of carotenoids and some related compounds. J. Am. Chem. Soc. 65, 1522-1528.
Zechmeister, L. (1962) cis-trans Isomeric carotenoids vitamins A and arylpolyenes. Springer-Verlag, Vienna, Austria.