ArticleScientific reports2026
Novel Raman signature evidences an unknown cyanobacterial pigment.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
From the first botanical characterization of cyanobacteria about two centuries ago to contemporary studies, only two categories of extracellular UV-screening pigments have been considered: scytonemin which is very well described and gloeocapsin, which remains enigmatic. In this study, we use Raman microspectroscopy to compare the extracellular EPS-associated pigment produced by the strain Chamaesiphon polonicus SAG 32.87 with gloeocapsins, scytonemins and other natural and synthetic pigments. Chemometrics analyses of Raman data reveal the existence of a third and new category of cyanobacterial extracellular pigment.
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