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2011
A comprehensive profile of chitin with 61 references is reported. A full description including nomenclature, formulae, elemental analysis, and appearance is included. Methods of preparation for chitin and its derivative, such as chitosan, are discussed.
Nidal H, Daraghmeh +4 more
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A comprehensive profile of chitin with 61 references is reported. A full description including nomenclature, formulae, elemental analysis, and appearance is included. Methods of preparation for chitin and its derivative, such as chitosan, are discussed.
Nidal H, Daraghmeh +4 more
+6 more sources
Patentology of chitinous biomaterials. Part I: Chitin
Carbohydrate Polymers, 2022Chitin as one of the fundamental structural biological materials widely occurring in broad diversity of uni- and multicellular organisms focuses attention of experts in biomedicine, materials science, and technology. We are the first to present a patentological overview of chitin as a renewable bioactive material that has stimulated the progress in ...
Ahmet, Kertmen, Hermann, Ehrlich
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International Journal of Biological Macromolecules, 1989
Chitin dissolved in N,N-dimethylacetamide, N-methyl-2-pyrrolidone and their mixed solvents in the presence of 5% LiCl was treated with acetic anhydride-pyridine, and the mixture solution was heated at 100 degrees C for 6 h to give a partially O-acetylated chitin gel. Chitin dissolved in these solvents in the presence of 5% LiCl was mixed with pyridine,
S, Hirano, K, Horiuchi
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Chitin dissolved in N,N-dimethylacetamide, N-methyl-2-pyrrolidone and their mixed solvents in the presence of 5% LiCl was treated with acetic anhydride-pyridine, and the mixture solution was heated at 100 degrees C for 6 h to give a partially O-acetylated chitin gel. Chitin dissolved in these solvents in the presence of 5% LiCl was mixed with pyridine,
S, Hirano, K, Horiuchi
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Tissue Engineering, 2004
The polysaccharide chitin is found in nature as a major component of the organic fraction of several biocomposites in which an organic matrix is associated with an inorganic fraction. The relationship between the mineral phase and the organic phase implies a high level of molecular recognition.
FALINI, GIUSEPPE, FERMANI, SIMONA
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The polysaccharide chitin is found in nature as a major component of the organic fraction of several biocomposites in which an organic matrix is associated with an inorganic fraction. The relationship between the mineral phase and the organic phase implies a high level of molecular recognition.
FALINI, GIUSEPPE, FERMANI, SIMONA
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Biochimica et Biophysica Acta, 1962
The structure factors for the various reflections of α-chitin have been calculated for both the structures of Carlstrom and of Dweltz. Comparison with observation does not indicate the definite superiority of one over the other, although Carlstrom's structure seems to be better from stereochemical considerations.
G N, RAMACHANDRAN, C, RAMAKRISHNAN
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The structure factors for the various reflections of α-chitin have been calculated for both the structures of Carlstrom and of Dweltz. Comparison with observation does not indicate the definite superiority of one over the other, although Carlstrom's structure seems to be better from stereochemical considerations.
G N, RAMACHANDRAN, C, RAMAKRISHNAN
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Shrimp chitin as substrate for fungal chitin deacetylase
Applied Microbiology and Biotechnology, 2001The fungal chitin deacetylases (CDA) studied so far are able to perform heterogeneous enzymatic deacetylation on their solid substrate, but only to a limited extent. Kinetic data show that about 5-10% of the N-acetyl glucosamine residues are deacetylated rapidly. Thereafter enzymatic deacetylation is slow.
N N, Win, W F, Stevens
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Enzymatic degradation of chitins and partially deacetylated chitins
International Journal of Biological Macromolecules, 1994The enzymatic (lysozyme, chitinase etc.) digestibility of chitins obtained from squid pen and shrimp shell, and of partially deacetylated chitins (DA-chitins) was investigated. The digestibility of various chitins by the chitinase from Bacillus sp. PI-7S was much higher than that by lysozyme, and beta-chitin was digested more smoothly than alpha-chitin.
Y, Shigemasa +3 more
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Thermal characteristics of chitin and hydroxypropyl chitin
Polymer, 1994Abstract The thermal properties of chitin and hydroxypropyl chitin (HPCH) were examined. Hydroxypropyl chitin was prepared from chitin and propylene oxide. The structure of HPCH was confirmed by solid-state 13 C nuclear magnetic resonance and Fourier-transform infra-red spectroscopy. From the results of elemental analysis, the degree of substitution
Seong Soo Kim +3 more
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Biochimica et Biophysica Acta, 1960
Abstract A new structure is proposed for the polysaccharide chitin, [C8H13O5N]n. X-ray diffraction fibre photographs of lobster tendon reveal a well-defined orthorhombic lattice with the space group P212121 and cell dimensions of a = 4.69 A , b = 19.13 A , and c = 10.43 A (fibre repeat).
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Abstract A new structure is proposed for the polysaccharide chitin, [C8H13O5N]n. X-ray diffraction fibre photographs of lobster tendon reveal a well-defined orthorhombic lattice with the space group P212121 and cell dimensions of a = 4.69 A , b = 19.13 A , and c = 10.43 A (fibre repeat).
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Chitin solutions and purification of chitin
1988Publisher Summary This chapter describes the dissolution and purification of chitin isolates via the newer anhydrous media. There is no clear line of demarcation between chitin isolation and its purification, but the isolation method affects chitin quality and in part determines any additional dissolution and other purification steps required.
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