Results 81 to 90 of about 12,369 (282)
Redox activity of melanin from the ink sac of Sepia officinalis by means of colorimetric oxidative assay [PDF]
, 2015 The redox properties of natural extract from cuttlefish ink sac (Sepia officinalis) and synthetic melanin used as a biomimetic in melanin structural investigation were determined by comparison of this phenol-based heterogeneous pigment with gallic acid ...
Correlo, V. M. +4 more
core +1 more source
Insect Science, EarlyView.Coloration serves several fitness‐related functions, including thermoregulation, immunity, social signaling, sexual selection, and predator avoidance. Consequently, color polymorphism can have a significant impact on a species’ interactions with its environment, including its relationships with predators, prey, and potential mates. The wood tiger moth (
Juan A. Galarza +9 more
wiley +1 more source
Heliyon, 2019 The influence of tyrosinase in catalyzes/stimulates the eumelanin production was studied. Accordingly, bacterial sp. was isolated and identified as Bacillus licheniformis based on 16S rRNA.
Al Shimaa Gamal Shalaby +3 more
doaj +1 more source
Melanin and Melanin-Like Hybrid Materials in Regenerative Medicine
Nanomaterials, 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 +1 more source
Substantial Effect of Melanin Influencing Factors on Melanogenesis in Muzzle Melanocytes of Differently Colored Hanwoo [PDF]
Asian-Australasian Journal of Animal Sciences, 2012 The present study was designed to investigate the effect of α-melanocyte-stimulating hormone (α-MSH), nitric oxide (NO) and L-cysteine on melanin production and expression of related genes MC1R, Tyr, Tyrp-1 and Tyrp-2 in muzzle melanocytes of differently
Touseef Amna +6 more
doaj +1 more source
Sex-specific phenotypic integration: Endocrine profiles, coloration, and behavior in fledgling boobies [PDF]
, 2015 The intensity of color expression in animals plays a key role in social environments as a mechanism to signal individual capacities in competitive contests. Selective pressures for resource competition differ at different stages of life and between sexes;
Fargallo, Juan A. +6 more
core +1 more source
Probing the heterogeneous structure of eumelanin using ultrafast vibrational fingerprinting
Nature Communications, 2020 Eumelanin is a brown-black biological pigment with sunscreen and radical scavenging functions important to numerous organisms. Eumelanin is also a promising redox-active material for energy conversion and storage, but the chemical structures present in ...
Christopher Grieco +3 more
semanticscholar +1 more source
Ibis, EarlyView.The detrimental effects of conventional farming on bird biodiversity are increasingly documented. Despite this, the specific impacts of both organic and conventional farming practices on bird coloration and sperm quality in natural settings remain unexplored. This study aimed to determine whether these farming practices differentially affect body mass,
Ségolène Humann‐Guilleminot +5 more
wiley +1 more source
Label-Free Delineation of Human Uveal Melanoma Infiltration With Pump–Probe Microscopy
Frontiers in Oncology, 2022 Uveal melanoma (UM) is the most frequent primary intraocular malignancy in adults, characterized by melanin depositions in melanocytes located in the uveal tract in the eyes.
Bohan Zhang +9 more
doaj +1 more source
Signatures of pancake bonding in hydrated eumelanin
Physical Chemistry Chemical Physics, 2023 Pancake bonding phenomenology explains the long-term inconsistency between electron paramagnetic resonance, muon spin relaxation and conductivity data for biopigment eumelanin.
P. A. Abramov +3 more
openaire +4 more sources