Results 31 to 40 of about 27,981 (253)

Photodynamics of Melanin Radicals: Contribution to Photoprotection by Melanin^†

Photochemistry and Photobiology, 2022
AbstractThe mechanism of very efficient relaxation of the melanin‐photoexcited states, responsible for the photoprotective action of the pigment, remains a subject for intense investigation. The most recent study by C. Grieco, F. Kohl, and B. Kohler, entitled “Ultrafast radical photogeneration pathways in eumelanin,” addresses key issues of melanin ...
openaire   +3 more sources

Melanin-Based Functional Materials [PDF]

, 2018
Melanin biopolymers are currently the focus of growing interest for a broad range of applications at the cutting edge of biomedical research and technology.
Marco d'Ischia, Marco d’Ischia
core   +1 more source

Melanin Medics: lessons from a community-led organization addressing inequities in medical education

Frontiers in Medicine
Inequities in health professions education, including differential attainment, racism, and barriers to widening participation, continue to disproportionately affect students from racially-minoritised and underrepresented backgrounds. While there has been
Olamide Oguntimehin, Olamide Oguntimehin, Oyinda Adeniyi, Temidayo Osunronbi, Temidayo Osunronbi, Ayomide Ayorinde, Ellen Nelson-Rowe, Ellen Nelson-Rowe, Nadia Ibrahim, Khadija Owusu, Ife Akano-Williams, Simisola Sodeinde, Simisola Sodeinde   +12 more
doaj   +1 more source

Amino acid modification and structural characterization of Auricularia heimuer melanin [PDF]

Zhongguo niangzao
In order to improve the solubility of Auricularia heimuer melanin, amino acid modification was performed on the melanin extracted from the fermentation broth of A. heimuer. The structure of amino acid melanin with better modification effects was selected
YAO Xiuge, GUO Yan, HAN Chuang, TIAN Shuang, ZHU Jianan, ZHANG Xiaojia, YIN Bo, MA Yinpeng
doaj   +1 more source

Solubility of Melanins [PDF]

Nature, 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 ...
openaire   +2 more sources

Radical-Enriched Artificial Melanin

, 2020
Melanin is a class of ubiquitous, heterogeneous, polymeric pigments. One of the most unusual features of melanin is the presence of stable persistent radicals, which has been reported to relate to ionizing radiation protection, including X-rays and gamma
Mao H., Stoddart J. F., Mantanona A. J., Jiao Y., Caponetti V., Wasielewski M. R., Gianneschi N. C., Zang N., Thompson M. P., Montalti M., Cao W., Rinehart J. D., McCallum N. C., Battistella C., Montalti, Marco, Wasielewski, Michael R., Zang, Nanzhi, McCallum, Naneki C., Battistella, Claudia, Gianneschi, Nathan C., Jiao, Yang, Caponetti, Valeria, Thompson, Matthew P., Stoddart, J. Fraser, Cao, Wei, Mantanona, Alex J., Rinehart, Jeffrey D., Mao, Haochuan   +27 more
core   +2 more sources

Electrochemical synthesis of melanin free-standing films

, 2005
Free-standing melanin films were successfully synthesised electrochemically from dopa. The Optimum synthetic conditions such as pH, concentration and current were determined, and it was found that free-standing film,.; could only be formed when ITO glass
Subianto, Surya, Meredith, P., Will, G., Paul Meredith, Will, Geoffrey, Meredith, Paul, Subianto, S.   +6 more
core   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Genetically Programmed Shape‐Morphing of Engineered Living Materials

Advanced Functional Materials, EarlyView.
Here, bacterial and mammalian engineered living materials (ELMs) are presented, in which living cells direct genetically programmed and enzymatically mediated shape‐morphing. The resulting deformation and shape‐recovery can be actuated in a genetically controlled manner by an ELM incorporating out‐of‐equilibrium counteracting biochemical reactions with
Jan Becker, Yuchen Liu, Miguel Baños, Rosanne Schmachtenberg, Mahmudul Hasan, Claudia Fink‐Straube, Luai R. Khoury, Wilfried Weber   +7 more
wiley   +1 more source

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

Microbial 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, Kelly Johana Dussán Medina, Sandra Regina Pombeiro Sponchiado   +2 more
doaj   +1 more source