Pigmentation and Spectral Absorbance Signatures in Deep-Water Corals from the Trondheimsfjord, NorwayReport as inadecuate




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1

Trondheim Biological Station, Department of Biology, Norwegian University of Science and Technology NTNU, Trondheim NO-7491, Norway

2

Department of Bio-Technology, Norwegian University of Science and Technology NTNU, Sem Sælands vei 8, Trondheim NO-7491, Norway

3

Norwegian Institute for Nature Research NINA, Trondheim NO-7485, Norway

4

The University Centre on Svalbard UNIS, P.O. Box 156, Longyearbyen NO-9171, Norway





*

Author to whom correspondence should be addressed.



Abstract The pigmentation and corresponding in vivo and in vitro absorption characteristics in three different deep-water coral species: white and orange Lophelia pertusa, Paragorgia arborea and Primnoa resedaeformis, collected from the Trondheimsfjord are described. Pigments were isolated and characterized by High-Performance Liquid Chromatography HPLC analysis and High-Performance Liquid Chromatography Time-Of-Flight Mass Spectrometer LC-TOF MS. The main carotenoids identified for all three coral species were astaxanthin and a canthaxanthin-like carotenoid. Soft tissue and skeleton of orange L. pertusa contained 2 times more astaxanthin g−1 wet weight compared to white L. pertusa. White and orange L. pertusa were characterized with in vivo absorbance peaks at 409 and 473 nm, respectively. In vivo absorbance maxima for P. arborea and P. resedaeformis was typically at 475 nm. The shapes of the absorbance spectra 400–700 nm were species-specific, indicated by in vivo, in vitro and the corresponding difference spectra. The results may provide important chemotaxonomic information for pigment when bonded to their proteins in vivo, bio-prospecting, and for in situ identification, mapping and monitoring of corals. View Full-Text

Keywords: astaxanthin; canthaxanthin; optical characteristics; Lophelia pertusa; Paragorgia arborea; Primnoa resedaeformis astaxanthin; canthaxanthin; optical characteristics; Lophelia pertusa; Paragorgia arborea; Primnoa resedaeformis





Author: Anette C. Elde 1, Ragnhild Pettersen 1, Per Bruheim 2, Johanna Järnegren 3 and Geir Johnsen 1,4,*

Source: http://mdpi.com/



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