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Analytical pyrolysis evidences the presence of granaticins in the violet stains of a Roman tomb

 

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Opened Access Analytical pyrolysis evidences the presence of granaticins in the violet stains of a Roman tomb
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Author: Díaz-Herraiz, Marta
Laiz, Leonila
Jurado, Valme
Zelia Miller, Ana
González-Pérez, José Antonio
Santos Morcillo, Juan Luis
Alonso, Esteban
Saiz-Jiménez, Cesáreo
Department: Universidad de Sevilla. Departamento de Química Analítica
Date: 2016
Published in: Journal of Analytical and Applied Pyrolysis, 117, 357-362.
Document type: Article
Abstract: The walls of the Circular Mausoleum tomb (Roman Necropolis of Carmona, Spain) exhibit an important number of violet stains of unknown origin. Analytical pyrolysis detected in the tomb walls granaticin A, a violet pigment with an isobenzochromanequinone structure, as well as in the extracts of two bacterial strains isolated from the walls. The bacterium was tentatively identified as Streptomyces sp. High performance liquid chromatography confirmed that this Streptomyces synthesized as major pigments dihydrogranaticin A, granaticin A and granaticin B.
Cite: Díaz-Herraiz, M., Laiz, L., Jurado, V., Zelia Miller, A., González-Pérez, J.A., Santos Morcillo, J.L.,...,Saiz-Jiménez, C. (2016). Analytical pyrolysis evidences the presence of granaticins in the violet stains of a Roman tomb. Journal of Analytical and Applied Pyrolysis, 117, 357-362.
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URI: https://hdl.handle.net/11441/80241

DOI: 10.1016/j.jaap.2015.10.018

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