Results 1 to 10 of about 21,003 (323)

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

open access: yesFrontiers in Microbiology, 2023
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   +2 more sources

Differential Antifungal Activity of Human and Cryptococcal Melanins with Structural Discrepancies [PDF]

open access: yesFrontiers in Microbiology, 2017
Melanin is a pigment found in all biological kingdoms, and plays a key role in protection against ultraviolet radiation, oxidizing agents, and ionizing radiation damage. Melanin exerts an antimicrobial activity against bacteria, fungi, and parasites.
Néstor Correa   +12 more
doaj   +3 more sources

Antioxidant, neuroprotective, and neuroblastoma cells (SH-SY5Y) differentiation effects of melanins and arginine-modified melanins from Daedaleopsis tricolor and Fomes fomentarius [PDF]

open access: yesBMC Biotechnology
Background Microbial melanins possess a broad spectrum of biological activities. However, there is little understanding of their neuroprotective and neuronal cell differentiation properties.
Hoang Anh Thu Nguyen   +5 more
doaj   +2 more sources

Neuroprotective effects of melanins and melanin derivatives from Calvatia Craniiformis and Xylaria plebeja against Parkinsonian toxins [PDF]

open access: yesScientific Reports
Fungal melanins have remarkable bioactivities, but their practical applications are limited, partly due to their hydrophobic nature. Melanin modification with amino acids was reported to improve their water solubility. This research aimed to extract, and
Duong Thuy Nguyen   +5 more
doaj   +2 more sources

Solubility of Melanins [PDF]

open access: bronzeNature, 1952
IN further attempts to find a solvent for melanin which would be of use in histological work, the following substances have been found to dissolve, in the cold, the pigments extracted from the ink sac of Sepia officinalis and melanoma tissue, and those prepared from adrenaline and 3,4-dihydroxyphenylalanine (dopa): ethylene glycol monomethyl ether ...
A. J. LEA
openaire   +3 more sources

Exploring the Agricultural Applications of Microbial Melanin [PDF]

open access: yesMicroorganisms
Microbial melanins are a group of pigments with protective effects against harsh conditions, showing fascinating photoprotective activities, mainly due to their capability to absorb UV radiation.
Patricio Muñoz-Torres   +2 more
doaj   +2 more sources

Synthesis and characterization of allomelanin model from 1,8-dihydroxynaphthalene autooxidation [PDF]

open access: yesScientific Reports
In this work a novel method for synthesis of 1,8-dihydroxynaphthalene melanin was presented, as well as the physicochemical properties, molecular structure, and characteristics of the pigment.
Jan Pukalski   +6 more
doaj   +2 more sources

Melanin and Melanin-Like Hybrid Materials in Regenerative Medicine [PDF]

open access: yesNanomaterials, 2020
Melanins are a group of dark insoluble pigments found widespread in nature. In mammals, the brown-black eumelanins and the reddish-yellow pheomelanins are the main determinants of skin, hair, and eye pigmentation and play a significant role in ...
Chiara Cavallini   +9 more
doaj   +5 more sources

Analysis of Interactions Between Pyomelanin and the Extracellular Matrix in an Ex Vivo Turkey Tendon Model [PDF]

open access: yesChemistryOpen
Melanins are conjugated biopolymers with varying compositions and functions, found in various tissues throughout the body. Here, the conjugated polymers derived from homogentisic acid (HGA), polyHGA (a simplified model of pyomelanin), formed in an ex ...
Rebecca F. Shepherd   +11 more
doaj   +2 more sources

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