Results 121 to 130 of about 43,526 (158)
Morphological and Chemical Composition Characterization of Commercial Sepia Melanin [PDF]
American Journal of Nanomaterials, 2015 Melanins are difficult to characterize because of their intractable chemical properties and the heterogeneity in their structural features. Melanin pigments, in fact, are composed of many different types of monomeric units that are connected through strong carbon-carbon bonds.
Malek Maaza
exaly +4 more sources
Effect of Melanomal Proteins on Sepia Melanin Assembly [PDF]
Journal of Macromolecular Science - Physics, 2015 Melanins are phenol-based pigments with the potential for widespread applications, including bioelectronics and tissue engineering. The concentration-dependent structural transition of sepia melanin in water is analyzed. This biopolymer at high concentration gives the well-known nanospheres, whereas sample dilution gives unforeseen nanofibres ...
Pathomthat Srisuk +2 more
exaly +5 more sources
Wool Dyeing with Sepia Melanin [PDF]
Textile Coloration and Finishing, 2010 ―Squid ink was purified to melanin powder by repeated treatments with aqueous sodium hydroxide and acetic acid solutions. The exhaustion dyeing conditions of melanin to wool fabrics were investigated in relation with pH, melanin concentr ation, dyeing temperature and time.
Jin-Ho Jang
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Isolation and characterization of melanin from black garlic and sepia ink
LWT - Food Science and Technology, 2019 Abstract Melanin was isolated from a plant source (black garlic: BG) and characterized and compared with melanin obtained from an animal source (sepia ink: SI). SEM observations showed that both melanins were spherical with the diameter of 100–1200 nm and 100–200 nm for BG and SI melanin, respectively.
Jong-Whan Rhim, Long-Feng Wang
exaly +2 more sources
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The reflectance of sepia melanin at THz frequencies
2023 5th Australian Microwave Symposium (AMS), 2023Zoltan Vilagosh +2 more
exaly +2 more sources
Vat dyeing of Wool and Cotton fabrics with Sepia Melanin
Textile Coloration and Finishing, 2010 Using extracted sepia melanin powder by repeated treatments with aqueous sodium hydroxide and acetic acid solutions, vat dyeing of wool and cotton fabrics was carried out under various dyeing conditions including concentration of melanin, alkali, reducing agent and salt, as well as dyeing time and temperature.
Jin-Ho Jang
exaly +3 more sources
Advanced Sustainable Systems, 2021 Organic electrode materials operating in aqueous electrolytes offer the opportunity to avoid toxic, critical, and expensive materials for electrochemical energy storage.
Clara Santato +2 more
exaly +2 more sources
Multi-scale Assembly in Nano-scaled Sepia Melanin Natural Dye
Materials Today: Proceedings, 2015 Abstract This study reports on a systematic investigation of the multi-scale hierarchical arrangements in/of the Sepia melanin nanospheres using ultrahigh resolution transmission electron microscopy combined with transmission and scanning electron microscopies.
Lebogang Kotsedi, Malek Maaza, Z Y Nuru
exaly +3 more sources
Pigment Cell Research, 2002
A 1H nuclear magnetic resonance study of Sepia melanin, Sepia melanin free acid (Sepia MFA) and human hair melanin was carried out in deuterium oxide solution at pH 10–11. The empirical formula of Sepia MFA was calculated and used to estimate the number of protons in the aromatic region of the Sepia MFA polymeric chain and to suggest a possible ...
Alan R, Katritzky +3 more
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A 1H nuclear magnetic resonance study of Sepia melanin, Sepia melanin free acid (Sepia MFA) and human hair melanin was carried out in deuterium oxide solution at pH 10–11. The empirical formula of Sepia MFA was calculated and used to estimate the number of protons in the aromatic region of the Sepia MFA polymeric chain and to suggest a possible ...
Alan R, Katritzky +3 more
openaire +2 more sources
NMR Studies of Melanins: Characterization of a Soluble Melanin Free Acid From Sepia Ink
Pigment Cell Research, 1991This paper deals with the nuclear magnetic resonance characterization of a soluble derivative (melanin free acid) of Sepia melanin obtained by a peroxidative treatment of the parent (insoluble) species. High resolution 13C and 15N solid state NMR spectroscopies allow the assessment of the chemical changes occurring in the macromolecule upon ...
AIME, Silvio +3 more
openaire +4 more sources