Results 11 to 20 of about 12,369 (282)
Anomalous evolution of broadband optical absorption reveals dynamic solid state reorganization during eumelanin build-up in thin films [PDF]
Scientific Reports, 2017 The origin of eumelanin optical properties remains a formidable conundrum preventing a detailed understanding of the complex photo-protective role of these widespread natural pigments and the rational design of innovative bioinspired materials for ...
Carmela Bonavolontà +6 more
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A Quantum Yield Map for Synthetic Eumelanin [PDF]
The Journal of Chemical Physics, 2005 The quantum yield of synthetic eumelanin is known to be extremely low and it has recently been reported to be dependent on excitation wavelength. In this paper, we present quantum yield as a function of excitation wavelength between 250 and 500 nm ...
Jennifer Riesz +5 more
core +7 more sources
Antioxidants, 2021 The purpose of this study is to identify amino acid derivatives with potent anti-eumelanogenic activity. First, we compared the effects of twenty different amidated amino acids on tyrosinase (TYR)-mediated dopachrome formation in vitro and melanin ...
Hyun Kyung Lee +3 more
doaj +2 more sources
MC1R: Front and Center in the Bright Side of Dark Eumelanin and DNA Repair [PDF]
International Journal of Molecular Sciences, 2018 Melanin, the pigment produced by specialized cells, melanocytes, is responsible for skin and hair color. Skin pigmentation is an important protective mechanism against the DNA damaging and mutagenic effects of solar ultraviolet radiation (UV).
Viki B. Swope, Zalfa Abdel‐Malek
openalex +2 more sources
Free energy and stacking of eumelanin nanoaggregates [PDF]
The Journal of Physical Chemistry B, 2021 Eumelanin, a member of the melanin family, is a black-brown insoluble pigment. It possesses a broad range of properties such as antioxidation, free radical scavenging, photo-protection, and charge carrier transportation. Surprisingly, the exact molecular
Sepideh Soltani +3 more
semanticscholar +4 more sources
Ultrafast Radical Photogeneration Pathways in Eumelanin †
Photochemistry and Photobiology, 2022 Eumelanin is a ubiquitous biological pigment that rapidly and efficiently deactivates excited states created by UV or visible radiation. Paradoxically, photoirradiation of eumelanin also generates radicals and harmful reactive oxygen species, but the ...
Christopher Grieco +2 more
semanticscholar +3 more sources
Edible Fungi Melanin: Recent Advances in Extraction, Characterization, Biological Activity and Applications [PDF]
Journal of FungiNatural melanin biopolymers exhibit a variety of biological activities, but their commercial development is constrained by numerous factors, including high costs, unsustainable sources, the use of harmful solvents during extraction, and low extraction ...
Jiandong Tang +4 more
doaj +2 more sources
Advanced Healthcare MaterialsBacterial keratitis (BK) is a severe eye infection commonly associated with Staphylococcus aureus (S. aureus), posing a significant risk to vision, especially among contact lens wearers.
Magdalena Bartolewska +7 more
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In Vitro Osteogenic Stimulation of Human Adipose-Derived MSCs on Biofunctional 3D-Printed Scaffolds [PDF]
BiomedicinesBackground: Human adipose-derived mesenchymal stem cells (hADMSCs) are widely used in regenerative medicine due to their ability to proliferate and differentiate.
Serena Munaò +8 more
doaj +2 more sources
Functionalized melanin for enhanced energy storage in aqueous and ionic liquid electrolytes [PDF]
Communications ChemistryEumelanin is an interesting functional material for electrochemical applications due to its quinone/hydroquinone redox equilibrium. One major issue in the eumelanin film processing is the lack of solubility in polar solvents. In this study, the influence
Noah Al-Shamery +6 more
doaj +2 more sources