Results 71 to 80 of about 6,578 (220)
Biomacromolecules, 2019 Natural melanin is a ubiquitous material that plays critical biofunctional roles in different living organisms. Scientists have dedicated significant efforts to elucidate the biofunctional roles of melanin since its discovery.
Wanjie Xie +6 more
semanticscholar +1 more source
Archives of Microbiology, 2020 In this study, the structure of the purified extracellular eumelanin pigment isolated from Streptomyces spp. was elucidated by detailed analysis via two different spectroscopic techniques (FT-IR and NMR).
S. Bayram +4 more
semanticscholar +1 more source
Hair Degradation Patterns in Aquatic and Soil Environments
Archaeometry, EarlyView.ABSTRACT Hair is a biological material that can provide information in archaeology and forensics. Previous studies have mainly examined changes occurring post‐mortem. In this study, we focused on hair pulled out ante‐mortem. The aim of the study was to identify patterns in the degradation of hair in water and soil.
Katarzyna Palacz‐Ziółek +3 more
wiley +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
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
Characterisation of eumelanin-chitosan films [PDF]
Acta Horticulturae, 2018 Food packaging films based on chitosan (1%, w/v) were developed by optimising chitosan thin films with different concentrations of eumelanin 0, 0.05, 0.1, 0.2 and 0.4% respectively. The properties of eumelanin-chitosan (EU-Ch) films, including colour, water contact angle, mechanical properties, degradation ratio, moisture content (MC), and total ...
Jaitrong, S. +4 more
openaire +2 more sources
JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.Summary Background Erythropoietic protoporphyria (EPP) is a rare genetic disorder characterized by severe phototoxic reactions that occur within minutes of light exposure. In clinical studies, afamelanotide has been shown to prolong pain‐free sun exposure, improve quality of life, and reduce the frequency and severity of phototoxic reactions ...
Magdalena Seidl‐Philipp +9 more
wiley +1 more source
International Journal of Molecular Sciences, 2020 Alkaline hydrogen peroxide oxidation (AHPO) of eumelanin and pheomelanin, two major classes of melanin pigments, affords pyrrole-2,3,5-tricarboxylic acid (PTCA), pyrrole-2,3-dicarboxylic acid (PDCA) and pyrrole-2,3,4,5-tetracarboxylic acid (PTeCA) from ...
S. Ito +3 more
semanticscholar +1 more source
International Journal of Cosmetic Science, EarlyView.Quantifying 3D hair volume on a human head remains highly subjective. We present a robust automated image analysis methodology based on comprehensive consumer perception. This approach translates multidimensional attributes into objective measurements, highly predictive of sensory and consumer evaluations. We now have a rigorous and accurate metric for
Margalith Harrar +6 more
wiley +1 more source
Towards structure–property–function relationships for eumelanin [PDF]
Soft Matter, 2006 We discuss recent progress towards the establishment of important structure-property-function relationships in eumelanins - key functional bio-macromolecular systems responsible for photo-protection and immune response in humans, and implicated in the development of melanoma skin cancer.
Meredith, P. +5 more
openaire +7 more sources