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Characterization of chitin, chitosan and their carboxymethyl derivatives by differential scanning calorimetry.

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Relation http://ir.cftri.com/3375/
 
Title Characterization of chitin, chitosan and their carboxymethyl derivatives by differential scanning calorimetry.
 
Creator Kittur, F. S.
Harish Prashanth, K. V.
Udaya Sankar, K.
Tharanathan, R. N.
 
Subject 03 Biochemistry & Molecular Biology
28 Meat, Fish & Poultry
 
Description Much attention has been directed towards the production of chitin and modified chitosans with tailored physicochemical, and hence functional, properties. However, only a limited range of analytical techniques are used to characterize these polymers. The utility of DSC was examined for the analysis of chitin and for assessing the chemical and physical changes in modified chitins and chitosans. Shrimp shell chitin was used to prepare a range of different chitins and chitosans with varying degrees of deacetylation, mol. wt., solubilities, and levels of carboxymethyl substituents. DSC thermograms contained endo- and exotherms corresponding to water evaporation and polymer decomposition, respectively. The enthalpy values observed in thermograms increased with increasing amino and carboxymethyl contents, and decomposition peak temp. and areas were also influenced by polymer mol. wt., and acetyl and carboxymethyl contents. It is concluded that DSC is an effective technique for evaluating deacetylation and carboxymethylation of chitin and chitosans.
 
Date 2002
 
Type Article
NonPeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/3375/1/Carbohydrate_Polymers_49_2_185-193.pdf
Kittur, F. S. and Harish Prashanth, K. V. and Udaya Sankar, K. and Tharanathan, R. N. (2002) Characterization of chitin, chitosan and their carboxymethyl derivatives by differential scanning calorimetry. Carbohydrate Polymers, 49 (2). 185-193, 33 ref..