One-pot synthesis of black biopolymeric eumelanin pigment by indigenous salt-tolerant SGM-1

For the first time, a soil-isolated indigenous salt-tolerant Pseudomonas stutzeri SGM-1 mediated one-pot synthesis of extracellular eumelanin is reported using only l -DOPA as the substrate. Biophysical characterizations of the eumelanin were performed using UV-Vis, FTIR, XRD, TGA, FESEM-EDS, DLS, a...

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Bibliographic Details
Published inMaterials advances Vol. 5; no. 4; pp. 1462 - 1467
Main Authors Mahajan, Swapnil G, Nandre, Vinod S, Kodam, Kisan M, Kulkarni, Mohan V
Format Journal Article
Published 19.02.2024
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Summary:For the first time, a soil-isolated indigenous salt-tolerant Pseudomonas stutzeri SGM-1 mediated one-pot synthesis of extracellular eumelanin is reported using only l -DOPA as the substrate. Biophysical characterizations of the eumelanin were performed using UV-Vis, FTIR, XRD, TGA, FESEM-EDS, DLS, and zeta potential analyses, thus confirming the colloidal microparticles as eumelanin. The synthesized eumelanin was acid-resistant, alkali-soluble, and insoluble in distilled water and many organic solvents. This one-pot synthesis method can reduce the use of hazardous chemicals and harsh extraction methods in the manufacturing and purification of eumelanin. Melanin is produced in a safe, mild process and is then well-characterized through various physicochemical studies. The novel process can be used to produce eumelanin in high quantities.
Bibliography:Electronic supplementary information (ESI) available. See DOI
https://doi.org/10.1039/d2ma01097f
ISSN:2633-5409
DOI:10.1039/d2ma01097f