Results 21 to 30 of about 65,646 (171)

Evaluation of gingival melanin pigmentation in pediatric population– An observational study

open access: yesJournal of Family Medicine and Primary Care, 2019
Aim: The aim of this study is to evaluate the gingival melanin pigmentation in the Indian pediatric population. The aim of this study is to find any association between age and melanin distribution, age and intensity of melanin distribution, sex and ...
Jerusha Santa Packyanathan, G Lavanya
doaj   +1 more source

Genomic Analysis and Assessment of Melanin Synthesis in Amorphotheca resinae KUC3009

open access: yesJournal of Fungi, 2021
This study reports the draft genome of Amorphotheca resinae KUC30009, a fungal isolate with promising industrial-scale melanin production potential. The mechanisms for melanin or melanin-related pigment formation of this strain were examined through ...
Jeong-Joo Oh   +7 more
doaj   +1 more source

The Melanin Biosynthesis Genes of Alternaria alternata Can Restore Pathogenicity of the Melanin-Deficient Mutants of Magnaporthe grisea

open access: yesMolecular Plant-Microbe Interactions, 1997
The phytopathogenic fungi Magnaporthe grisea and Alternaria alternata produce melanin via the polyketide biosynthesis, and both fungi form melanized colonies. However, the site of melanin deposition and the role of melanin in pathogenicity differ between
Chie Kawamura   +7 more
doaj   +1 more source

Progress of Research on Melanin in Foods and Their Materials

open access: yesShipin gongye ke-ji, 2022
Melanin in food and its raw materials has been widely studied in recent years. Each kind of melanin has many types, various formation mechanisms and complicated structures.
Yueqi SHENG, Wenbiao WU
doaj   +1 more source

Improved natural melanin production by Aspergillus nidulans after optimization of factors involved in the pigment biosynthesis pathway

open access: yesMicrobial Cell Factories, 2022
Background Melanin is a natural pigment that can be applied in different fields such as medicine, environment, pharmaceutical, and nanotechnology.
William Bartolomeu Medeiros   +2 more
doaj   +1 more source

Antioxidant activities from melanin pigment produced by marine actinobacterium of Streptomyces species

open access: yesJournal of Advanced Pharmaceutical Technology & Research, 2022
Melanin is macromolecules which have been developed while oxidative polymerization of phenolic compounds. It has been found that the majority of marine organisms produce melanin pigment.
M I Sheefaa, Pitchiah Sivaperumal
doaj   +1 more source

Melanina, um pigmento natural multifuncional [PDF]

open access: yesarXiv, 2021
The melanins are a ubiquitous class of pigments found throughout nature from lower organisms to humans. It is one of the few biopolymers with fascinating functions in biology, medicine, chemistry, physics and engineering due to its relation to neurological diseases, skin disorders and melanoma, and, in the last couple of decades, its applications in ...
arxiv  

Quantitative photoluminescence of broad band absorbing melanins: A procedure to correct for inner filter and re-absorption effects [PDF]

open access: yes, 2004
We report methods for correcting the photoluminescence emission and excitation spectra of highly absorbing samples for re-absorption and inner filter effects. We derive the general form of the correction, and investigate various methods for determining the parameters. Additionally, the correction methods are tested with highly absorbing fluorescein and
arxiv   +1 more source

Differential Antifungal Activity of Human and Cryptococcal Melanins with Structural Discrepancies

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   +1 more source

Pigment Melanin: Pattern for Iris Recognition [PDF]

open access: yes, 2009
Recognition of iris based on Visible Light (VL) imaging is a difficult problem because of the light reflection from the cornea. Nonetheless, pigment melanin provides a rich feature source in VL, unavailable in Near-Infrared (NIR) imaging. This is due to biological spectroscopy of eumelanin, a chemical not stimulated in NIR.
arxiv   +1 more source

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