Results 11 to 20 of about 60,963 (257)
Studies on Chitin. I. Acetylation of Chitin [PDF]
Polymer Journal, 1979 Chitin was converted into diacetylchitin and also into various kinds of acetylchitins. A fully acetylated chitin was prepared by the acetylation of chitin in acetic anhydride—methanesulfonic acid mixture at 0°C overnight, or in acetic anhydride—perchloric acid mixture at 0°C for 3 h.
Nishi, Norio +3 more
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mBio, 2012 ABSTRACTChitin, a polymer ofN-acetylglucosamine, is an essential component of the fungal cell wall. Chitosan, a deacetylated form of chitin, is also important in maintaining cell wall integrity and is essential forCryptococcus neoformansvirulence. In their article, Gilbert et al. [N. M. Gilbert, L. G. Baker, C. A. Specht, and J. K.
David L. Goldman, Alfin G. Vicencio
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Studies on Chitin. III. Preparation of Chitin Fibers [PDF]
Polymer Journal, 1979 The chitin fiber was obtained from a chitin-formic acid solution which was found to be spinnable. This solution was prepared through repeated freezing process by the addition of dichloroacetic acid and isopropyl ether. Dichloroacetic acid and methanesulfonic acid were also found to be solvents for chitin, though the spinnability could not be observed ...
Tokura, Seiichi +2 more
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Studies on Chitin I. Enzymic Degradation of Chitin and Chitin Esters [PDF]
Australian Journal of Biological Sciences, 1954 A study has been made O'f the enzymic degradation of chitin and the sodium salt of chitin sulphuric acid by a chitinase prepared from the intestinal tract of the snail, Helix aspersa. It is shown that, in a citrate-phosphate buffer, the pH for optimum activity is 4.8 for both substrates.
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A study on structural comparisons of α-chitin extracted from marine crustacean shell waste
Carbohydrate Polymer Technologies and Applications, 2021 In the present study, chitin was extracted from marine crustacean shell waste (shrimp, crab, squilla and lobster) using traditional chemical methods (deproteinisation and demineralization) and its physicochemical and structural properties were ...
K. Mohan +3 more
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Frontiers in Plant Science, 2022 Chitin is a well-known elicitor of disease resistance and its recognition by plants is crucial to perceive fungal infections. Chitin can induce both a local immune response and a systemic disease resistance when provided as a supplement in soils.
Momoko Takagi +13 more
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Effects of Ball Milling, Ultrosonic or Hydrochloric Acid Treatment on the Microstructure and Enzymatic Deacetylation Efficiency of Chitin [PDF]
Shipin Kexue, 2023 Chitin is the second most abundant natural polysaccharide on Earth, which can be deacetylated to produce chitosan. However, due to the high crystallinity and poor solubility of chitin, its efficiency of enzymatic deacetylation is very low. To investigate
XIAO Yu, YU Hongwei, MA Aijin, SANG Yaxin, SUN Jilu
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Brazilian Journal of Biology, 2021 Chitin and its derived products have immense economic value due to their vital role in various biological activities as well as biomedical and industrial application.
F. Jabeen +8 more
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Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III)
Indonesian Journal of Chemical Research, 2018 Immobilization of humic acid on chitin has been conducted and applied to the adsorption of Cr(III). The humic acid was isolated using NaOH 0.1 M, while chitin was isolated by deproteination of crab shells by using NaOH 3.5 % (w/v) and followed by ...
Muhamad Sehol +2 more
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Giant, 2020 Chitin is the most abundant natural glycosaminoglycan that is derived from marine crustaceans and has enormous potential in biomedical applications because of its high similarity in chemical structure to the component of extracellular matrix.
Junchao Huang +4 more
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