Results 11 to 20 of about 6,578 (220)
Colored Surfaces Made of Synthetic Eumelanin [PDF]
Nanomaterials, 2021 The polymerization of 3,4-dihydroxy-L-phenylalanine leads to a carboxylic acid-rich synthetic melanin-like material (poly-L-DOPA). Synthetic melanin most resembles natural eumelanin in chemical structure.
Gema Marcelo +3 more
doaj +4 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
The photoreactive free radical in eumelanin [PDF]
Science Advances, 2018 We demonstrate experimentally for the first time the presence of two free radicals in the pigment eumelanin. Melanin is the primary photoprotecting pigment in humans as well as being implicated in the development of deadly melanoma.
A. Mostert +4 more
semanticscholar +7 more sources
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
A newly isolated Streptomyces nigra strain for the biotechnological production of melanin [PDF]
Applied Microbiology and BiotechnologyMelanins are pigments widely distributed in microbial, plant, and animal kingdoms. Their UV–visible light shielding capacity, metal chelation ability, antioxidant, and antimicrobial properties make these pigments suitable for different industrial ...
Donatella Cimini +11 more
doaj +2 more sources
Antioxidants, 2022 Constitutive pigmentation determines the response to sun exposure and the risk for melanoma, an oxidative stress–driven tumor. Using primary cultures of human melanocytes, we compared the effects of constitutive pigmentation on their antioxidant response
Parth R. Upadhyay +5 more
doaj +1 more source
Structural Model of Eumelanin [PDF]
Physical Review Letters, 2006 Melanin is a ubiquitous pigment in living organisms with multiple important functions, yet its structure is not well understood. We propose a structural model for eumelanin protomolecules, consisting of 4 or 5 of the basic molecular units (hydroquinone, indolequinone, and its tautomers), in arrangements that contain an inner porphyrin ring. We use time-
Kaxiras, Efthimios +3 more
openaire +5 more sources
Spiny mice modulate eumelanin to pheomelanin ratio to achieve cryptic coloration in "evolution canyon," Israel. [PDF]
PLoS ONE, 2010 Coat coloration in mammals is an explicit adaptation through natural selection. Camouflaging with the environment is the foremost evolutionary drive in explaining overall coloration. Decades of enquiries on this topic have been limited to repetitive coat
Natarajan Singaravelan +5 more
doaj +1 more source
International Journal of Molecular Sciences, 2023 Superficial discolored spots on Atlantic salmon (Salmo salar) fillets are a serious quality problem for commercial seafood farming. Previous reports have proposed that the black spots (called melanized focal changes (MFCs)) may be melanin, but no ...
K. Wakamatsu +3 more
semanticscholar +1 more source
Advanced Materials Interfaces, 2023 During the development of the nervous system, neurons sense and respond to topographical and biochemical cues found in the brain's native environment.
Anna Mariano +8 more
doaj +1 more source