Results 21 to 30 of about 6,578 (220)
Fungi as a source of eumelanin: current understanding and prospects
Journal of Industrial Microbiology & Biotechnology, 2023 Melanins represent a diverse collection of pigments with a variety of structures and functions. One class of melanin, eumelanin, is recognizable to most as the source of the dark black color found in cephalopod ink.
W. Beeson, K. Gabriel, C. Cornelison
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Transition dipole strength of eumelanin [PDF]
Physical Review E, 2007 We report the transition dipole strength of eumelanin (the principal human photoprotective pigment) in the ultraviolet and visible. We have used both theoretical (density functional) and experimental methods to show that eumelanin is not an unusually strong absorber amongst organic chromophores.
Riesz, J. J. +5 more
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Nanomaterials and Nanotechnology, 2023 The role of eumelanin as a natural pigment in protecting human skin from ultraviolet (UV) light has drawn vast interest in the research and industrial community.
Oceu Dwi Putri +9 more
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Solid-State Electrochemical Energy Storage Based on Soluble Melanin
Electrochem, 2021 Biocompatible and biodegradable powering materials are appealing systems for biomedical and electronic devices. Melanin is a natural and multifunctional material with redox capability, which is of great interest in electrochemical energy storage ...
João V. Paulin +2 more
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The Eumelanin Human Skin Colour Scale: a proof‐of‐concept study
British Journal of Dermatology, 2022 At present there is no standard nomenclature for describing the diversity of human constitutive skin colour.
O. Dadzie +4 more
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The photoprotection mechanism in the black–brown pigment eumelanin
Proceedings of the National Academy of Sciences of the United States of America, 2022 Significance The black–brown eumelanin pigment plays a major role in humans’ photoprotection against high-energy UV photons by dissipating radiation into heat before harmful radical reactions can damage tissue.
A. Ilina +9 more
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Journal of Biomedical Optics, 2012 We describe the auto-oxidation of 3, 4-dihydroxy-L-phenylalanine (L-DOPA) in the synthesis of eumelanin to spontaneously produce fibrils upon drying. The self-assembled fibrils are of characteristic diameter ∼1 to 2 μm, composed of filaments, and are unidirectional, apart from branches that are formed at typically an angle of 20 to 22 deg.
McQueenie, Ross +3 more
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Pigment Cell & Melanoma Research, 2022 Human skin contains two distinct components: brown to black, insoluble eumelanin and light colored, alkaline‐soluble pheomelanin. Eumelanin consists of 5,6‐dihydroxyindole (DHI) and 5,6‐dihydroxyindole‐2‐carboxylic acid (DHICA) moieties, while ...
S. D. Bino, S. Ito, J. Sok, K. Wakamatsu
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International Journal of Molecular Sciences, 2022 The overproduction of eumelanin leads to a panel of unaesthetic hyper-pigmented skin diseases, including melasma and age spots. The treatment of these diseases often requires the use of tyrosinase inhibitors, which act as skin whitening agents by ...
V. Gigli +5 more
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Oxidative physiology is weakly associated with pigmentation in birds
Ecology and Evolution, 2022 The mechanistic link between avian oxidative physiology and plumage coloration has attracted considerable attention in past decades. Hence, multiple proximal hypotheses were proposed to explain how oxidative state might covary with the production of ...
Attila Marton +11 more
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