Raman Spectroscopic Study of Antioxidant Pigments from Cup Corals Tubastraea spp.
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- 作者：Lenize F. Maia ; Gilson R. Ferreira ; Regina C. C. Costa ; Nanci C. Lucas ; Rodolfo I. Teixeira ; Beatriz G. Fleury ; Howell G. M. Edwards ; Luiz F. C. de Oliveira
- 刊名：Journal of Physical Chemistry A
- 出版年：2014
- 出版时间：May 15, 2014
- 年：2014
- 卷：118
- 期：19
- 页码：3429-3437
- 全文大小：404K
- 年卷期：v.118,no.19(May 15, 2014)
- ISSN：1520-5215
文摘
Chemical investigation of nonindigenous Tubastraea coccinea and T. tagusensis by Raman spectroscopy resulted in the identification of carotenoids and indolic alkaloids. Comparison of Raman data obtained for the in situ and crude extracts has shown the potential of the technique for characterizing samples which are metabolic fingerprints, by means of band analysis. Raman bands at ca. 1520, 1160, and 1005 cm鈥? assigned to 谓1(C鈺怌), 谓2(C鈥擟), and 蟻3(C鈥擟H3) modes were attributed to astaxanthin, and the band at 1665 cm鈥? could be assigned to the 谓(C鈥擭), 谓(C鈥擮), and 谓(C鈥擟) coupled mode of the iminoimidazolinone from aplysinopsin. The antioxidant activity of the crude extracts has also been demonstrated, suggesting a possible role of these classes of compounds in the studied corals.