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- W1965127907 abstract "This paper deals with the nuclear magnetic resonance characterization of a soluble derivative (melanin free acid) of Sepia melanin obtained by a peroxidative treatment of the parent (insoluble) species. High resolution 13C and 15N solid state NMR spectroscopies allow the assessment of the chemical changes occurring in the macromolecule upon solubilization. 1H and 13C NMR solution spectra are discussed in light of the results obtained from the solid state spectra. Furthermore, the coordination properties of melanin have been investigated through 27Al NMR spectroscopy and proton relaxation enhancement studies of the paramagnetic gadolinium complex of melanin free acid. Through these experiments it has been possible to evaluate the molecular reorientational time tau R (and from it an estimated molecular weight close to 20 KDa) and the strength of the metal-macromolecule interaction." @default.
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- W1965127907 date "1991-12-01" @default.
- W1965127907 modified "2023-10-13" @default.
- W1965127907 title "NMR Studies of Melanins: Characterization of a Soluble Melanin Free Acid From Sepia Ink" @default.
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- W1965127907 doi "https://doi.org/10.1111/j.1600-0749.1991.tb00443.x" @default.
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