Lenize F. Maia, Vanessa E. de Oliveira, Maria E. R. Oliveira, Felipe D. Reis, Beatriz G. Fleury, Howell G. M. Edwards and Luiz F. C. de Oliveira Colour diversification in octocorals based on conjugated polyenes: A Raman spectroscopic view Journal of Raman Spectroscopy 44
In this work Raman spectroscopy has been used for evaluating colour diversification in octocorals tissues. Bands at ca. 1500 ν1(C=C) and ν2 (C–C) 1130 cm−1 were attributed to polyenals inserted into red and yellow sclerites endogenously produced by octocorals, whereas bands at ca. 1520 ν1(C=C), 1160 ν2 (C–C) and ρ(C–CH3) 1006 cm−1 were assigned to the carotenoid astaxanthin transferred to octocorals through food web. Pigments derived from polyenes were successfully identified either in in situ analysis or crude extracts.
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