Results 51 to 60 of about 65,646 (171)

Magnetic Properties of Melanin Doped with Copper Oxide Nanoparticles

open access: yesEngineering Proceedings
In this study, the analysis of XRD patterns reveals that both natural melanin and copper oxide-doped melanin exhibit amorphous structures. The absence of new peaks for Cu2O confirms that the copper oxide nanoparticles are effectively integrated into the ...
Nawal Madkhali
doaj   +1 more source

Production and characterization of melanin pigment from black fungus Curvularia soli AS21 ON076460 assisted gamma rays for promising medical uses

open access: yesMicrobial Cell Factories
Owing to the growing need for natural materials in different fields, studying melanin production from biological sources is imperative. In the current study, the extracellular melanin pigment was produced by the fungus Curvularia soli AS21 ON076460.
Amira S. Abd-EL-Aziz   +3 more
doaj   +1 more source

Bacterial melanin promotes recovery after sciatic nerve injury in rats

open access: yesNeural Regeneration Research, 2015
Bacterial melanin, obtained from the mutant strain of Bacillus Thuringiensis, has been shown to promote recovery after central nervous system injury. It is hypothesized, in this study, that bacterial melanin can promote structural and functional recovery
Olga V Gevorkyan   +3 more
doaj   +1 more source

How habitable are M-dwarf Exoplanets? Modeling surface conditions and exploring the role of melanins in the survival of Aspergillus niger spores under exoplanet-like radiation [PDF]

open access: yes
Exoplanet habitability remains a challenging field due to the large distances separating Earth from other stars. Using insights from biology and astrophysics, we studied the habitability of M-dwarf exoplanets by modeling their surface temperature and flare UV and X-ray doses using the Martian atmosphere as a shielding model.
arxiv   +1 more source

The peculiarities of dynamic current-voltage and charge-voltage loops and transient currents of melanin under pulse hydration [PDF]

open access: yesarXiv, 2019
Melanin is a biopolymer with unique set of applicable physical and chemical properties. The impact of a moisture-saturated air pulse (~1 s) on dynamic current-voltage (I-V-), charge-voltage (Q-V-) and transient (I-t-) characteristics of fungal melanin thin layers was investigated.
arxiv  

Solubilized melanin suppresses macrophage function

open access: yesFEBS Open Bio, 2019
Melanin‐producing Cryptococcus and Aspergillus are highly invasive and can suppress or escape the immune system of the host. Since non‐melanin‐producing strains do not affect the immune system, melanin may play a role in immune system suppression ...
Katsuya Tajima   +4 more
doaj   +1 more source

Melanin particles isolated from the fungus Fonsecaea pedrosoi activates the human complement system

open access: yesMemorias do Instituto Oswaldo Cruz, 2018
BACKGROUND Melanin production has been associated with virulence in various pathogenic fungi, including Fonsecaea pedrosoi, the major etiological agent for chromoblastomycosis, a subcutaneous fungal disease that occurs in South America.
Lysianne Pinto   +7 more
doaj   +1 more source

Ionizing radiation changes the electronic properties of melanin and enhances the growth of melanized fungi.

open access: yesPLoS ONE, 2007
BackgroundMelanin pigments are ubiquitous in nature. Melanized microorganisms are often the dominating species in certain extreme environments, such as soils contaminated with radionuclides, suggesting that the presence of melanin is beneficial in their ...
Ekaterina Dadachova   +7 more
doaj   +1 more source

Anti-ultraviolet, antibacterial, and biofilm eradication activities against Cutibacterium acnes of melanins and melanin derivatives from Daedaleopsis tricolor and Fomes fomentarius

open access: yesFrontiers in Microbiology
Fomes fomentarius and Daedaleopsis tricolor produced significant amounts of water-insoluble melanins, and our previous study successfully enhanced their water solubility by arginine modification.
Tu N. Le   +5 more
doaj   +1 more source

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