Fucoxanthin mediators

The difference in the fluorescence spectra between intact and dissociated FCPA is rather dramatic, as can be seen in Fig. 7. The main emission band at 677 nm shown in Fig. 7 (A) was excited at 440,460 and 515 nm, wavelengths absorbed predominantly by Chi a, Chi c and fucoxanthin, respectively. The emission spectra indicate that both Chi c and fucoxanthin transfer excitation energy to Chi a with high efficiency. The emission spectrum excited by 460 nm shows a weak emission at 640 nm, originating from Chi c. However, the 640-nm emission is not seen when the sample was excited at 515 nm, which suggests that fucoxanthin transfers energy directly to Chi a without the mediation of Chi c. 

Woo, M. N., Jeon, S. M., Shin, Y. C., Lee, M. K., Kang, M. A., and Choi, M. S. (2009). Anti-obese property of fucoxanthin is partly mediated by altering Upid-regulating enzymes and uncoupling proteins of visceral adipose tissue in mice. Mol. Nutr. Food Res. 53, 1603-1611. 

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