Journal ArticleDOI
An infrared investigation in relation with chitin and chitosan characterization
J Brugnerotto,J. Lizardi,Francisco M. Goycoolea,Waldo Argüelles-Monal,Jacques Desbrieres,Marguerite Rinaudo +5 more
TLDR
The use of infrared spectroscopy for characterization of the composition of chitin and chitosan covering the entire range of degree of acetylation (DA) and a wide variety of raw materials is examined further in this article.About:
This article is published in Polymer.The article was published on 2001-04-01. It has received 1219 citations till now. The article focuses on the topics: Infrared spectroscopy & Absorbance.read more
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Chitin and chitosan: Properties and applications
TL;DR: Chitin is the second most important natural polymer in the world as mentioned in this paper, and the main sources of chitin are two marine crustaceans, shrimp and crabs, which are used for food, cosmetics, biomedical and pharmaceutical applications.
Journal ArticleDOI
Chitin and Chitosan Preparation from Marine Sources. Structure, Properties and Applications
Islem Younes,Marguerite Rinaudo +1 more
TL;DR: Several selected pharmaceutical and biomedical applications are presented, in which chitin and chitosan are recognized as new biomaterials taking advantage of their biocompatibility and biodegradability.
Journal ArticleDOI
Functional Characterization of Chitin and Chitosan
Inmaculada Aranaz,Marian Mengíbar,Ruth Harris,Ines Panos,Beatriz Miralles,Niuris Acosta,Gemma Galed,Angeles Heras +7 more
TL;DR: A functional characterization of chitin and chitosan regarding some biological properties and some specific applications (drug delivery, tissue engineering, functional food, food preservative, biocatalyst immobilization, wastewater treatment, molecular imprinting and metal nanocomposites) is presented.
Journal ArticleDOI
Application of Spectroscopic Methods for Structural Analysis of Chitin and Chitosan
Jolanta Kumirska,Małgorzata Czerwicka,Zbigniew Kaczyński,Anna Bychowska,Krzysztof Brzozowski,Jorg Thöming,Piotr Stepnowski +6 more
TL;DR: A complete chemical and physicochemical characterization of chitin, chitosan and their derivatives is not possible without using spectroscopic techniques, so this review focuses on the application of Spectroscopic methods for the structural analysis of these compounds.
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Chemical characteristics of O-carboxymethyl chitosans related to the preparation conditions
Xiguang Chen,Hyun Jin Park +1 more
TL;DR: In this article, the water insolubility of carboxymethyl chitosans at various pHs varied with the degree of the carboxyethylation and the reaction temperature, and the ratio of water/isopropanol in the reaction solvent.
References
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Improved method for i.r. determination of the degree of N-acetylation of chitosan
TL;DR: In this article, the absorption band ratios for determining the % N-acetylation of chitosan have been used to follow the rate of alkaline deacetylated chitin, where the absorbance of the amide I band at approximately 1655 cm−1 is determined using the baseline proposed previously.
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Determination of the degree of N-acetylation and the distribution of N-acetyl groups in partially N-deacetylated chitins (chitosans) by high-field n.m.r. spectroscopy☆
TL;DR: The composition and sequence of 2-acetamido-2-deoxy-beta-D-glucose (GlcNAc) and GlcN) residues in partially N-deacetylated chitosans, prepared under homogeneous and heterogeneous conditions, have been determined by 1H-n.r.m. spectroscopy.
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Evaluation of different absorbance ratios from infrared spectroscopy for analyzing the degree of deacetylation in chitin
TL;DR: There is a good correlation between the results from IR spectroscopy and those from 1H-NMRSpectroscopy.
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Evaluation of infrared spectroscopic techniques for analysing chitosan
TL;DR: In this article, the use of the 3450 cm−1 absorption band as an internal standard in the determination of the extent of N-acetylation of chitosan from the absorbance of the amide I band at 1655 cm− 1 was studied.
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Studies on chitin, 2. Effect of deacetylation on solubility
TL;DR: A reproducible method for obtaining water-soluble chitin and a relationship between solubility and degree of deacetylation of chitins were studied in this article.