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dc.contributor.authorde Oliveira, V.E.
dc.contributor.authorMiranda, M.A.C.N.
dc.contributor.authorSoares, M.C.S.
dc.contributor.authorEdwards, Howell G.M.
dc.contributor.authorde Oliveira, L.F.C.
dc.date.accessioned2016-09-21T17:15:45Z
dc.date.available2016-09-21T17:15:45Z
dc.date.issued2015-11
dc.identifier.citationde Oliveira VE, Miranda MACN, Soares MCS et al (2015) Study of carotenoids in cyanobacteria by Raman spectroscopy. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 150: 373-380.
dc.identifier.urihttp://hdl.handle.net/10454/9330
dc.descriptionNo
dc.description.abstractCyanobacteria have established dominant aquatic populations around the world, generally in aggressive environments and under severe stress conditions, e.g., intense solar radiation. Several marine strains make use of compounds such as the polyenic molecules for their damage protection justifying the range of colours observed for these species. The peridinin/chlorophyll-a/protein complex is an excellent example of essential structures used for self-prevention; their systems allow to them surviving under aggressive environments. In our simulations, few protective dyes are required to the initial specimen defense; this is an important data concern the synthetic priority in order to supply adequate damage protection. Raman measurements obtained with 1064 and 514.5 nm excitations for Cylindrospermopsis raciborskii and Microcystis aeruginosa strains shows bands assignable to the carotenoid peridinin. It was characterized by bands at 1940, 1650, 1515, 1449, 1185, 1155 and 1000 cm−1 assigned to ν(Cdouble bond; length as m-dashCdouble bond; length as m-dashC) (allenic vibration), ν(Cdouble bond; length as m-dashC/CO), ν(Cdouble bond; length as m-dashC), δ(Csingle bondH, C-18/19), δ(Csingle bondH), ν(Csingle bondC), and ρ(Csingle bondCH3), respectively. Recognition by Raman spectroscopy proved to be an important tool for preliminaries detections and characterization of polyene molecules in several algae, besides initiate an interesting discussion about their synthetic priority.
dc.description.sponsorshipFAPEMIG, CNPq, FINEP and CAPESen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1016/j.saa.2015.05.044
dc.titleStudy of carotenoids in cyanobacteria by Raman spectroscopy
dc.status.refereedYes
dc.date.Accepted2015-05-15
dc.date.application2015-05-30
dc.typeArticle
dc.type.versionNo full-text available in the repository


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