Results 11 to 20 of about 43,526 (158)
Effect of UV irradiation on free radicals in synthetic melanin and melanin biopolymer from Sepia officinalis – EPR examination [PDF]
Nukleonika, 2015 Free radicals in synthetic melanin and melanin from Sepia officinalis were studied by electron paramagnetic resonance (EPR) spectroscopy. The effect of time of ultraviolet (UV) irradiation on free radicals in these melanins was tested.
Zdybel Magdalena, Pilawa Barbara
doaj +4 more sources
High conductivity Sepia melanin ink films for environmentally benign printed electronics. [PDF]
Proc Natl Acad Sci U S A, 2022 Melanins (from the Greek μέλας, mélas, black) are bio-pigments ubiquitous in flora and fauna. Eumelanin is an insoluble brown–black type of melanin, found in vertebrates and invertebrates alike, among which Sepia (cuttlefish) is noteworthy.
Camus A +5 more
europepmc +5 more sources
Melanin granules extracted from Sepia ink: a nanoscale study of charge carrier transport [PDF]
JPhys MaterialsEumelanin, the brown-black member of the melanin family of biopigments, has emerged as a promising material for sustainable organic electronics. Sepia eumelanin develops hierarchically from (5, 6)-dihydroxyindole (DHI) and (5, 6)-dihydroxyindole-2 ...
Shahid Khaleel +5 more
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Electrical response and biodegradation of Sepia melanin-shellac films printed on paper [PDF]
Communications MaterialsSepia melanin, a biopigment extracted from the ink sac of cuttlefish, is relevant to sustainable organic electronics. In this work, we flexographically print films from an ink of Sepia melanin including shellac as a bio-sourced binder on silver electrode-
Anthony Camus +11 more
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Optimizing the extraction of melanin bio-composition from squid ink Sepia pharaonis [PDF]
بومشناسی آبزیان, 2021 Melanin is known as one of the main pigment components of ink in pharaoh cuttlefish, which has a strong bond with the hydroxyl group of TiO2. The aim of this study was to determine the appropriate method for extracting melanin from the ink of pharaoh ...
Tayebeh Zarei Karyani +2 more
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Redox activity of melanin from the ink sac ofSepia officinalisby means of colorimetric oxidative assay [PDF]
Natural Product Research, 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 used as a standard in Folin–Ciocalteu colorimetric assay widely employed for characterisation of ...
Srisuk P. +4 more
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, 2010 At the moment melanins are still enigmatic bio-pigments with structure and determination methods not clearly understood for the international scientific community. Among biopolymers, melanins are unique in many aspects. Some essential biopolymers (proteins, nucleic acids and carbohydrates) are chemically well characterized and can be determined using ...
Magarelli P. +2 more
core +3 more sources
, 2011 Currently melanins are still enigmatic bio-pigments bearing a structure as well as methods of determination not clearly fixed by the international scientific community. In many respects melanins are unique among biopolymers. The other essential biopolymers, that is proteins, nucleic acids and carbohydrates are chemically well characterized and can be ...
MAGARELLI, Mario
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Biochemical and Biophysical Research Communications, 2003 The melanin-free ink of the cephalopod Sepia officinalis is shown to contain a heat labile proteinaceous component toxic to a variety of cell lines, including PC12 cells. Gel filtration chromatography indicated that the toxic component was concentrated in those fractions eluted at a molecular weight higher than 100 kDa and exhibiting the highest ...
G. L. RUSSO +5 more
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