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ISSN 2063-5346
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CHARACTERISTICS OF N,O-CARBOXYMETHYLCHITOSAN SYNTHESIZED BASED ON CHITIN FROM ARTEMIA PARTHENOGENETICA CYSTS

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1Berdimbetova G.E, 1Karlybaeva B.P, 2Boymirzaev A.S, 3Kovalskaya S.S.
» doi: 10.31838/ecb/2023.12.3.073

Abstract

The paper presents the results of a study of carboxymethyl chitosan synthesized based on chitin/chitosan from cysts of the Karakalpak population of Artemia parthenogenetica in the Aral Sea. The resulting N, O-carboxymethyl chitosan (N, O- CMCS) is hydrophilic and readily soluble in acidic, neutral, and alkaline media. 1Н and 13С NMR spectroscopy and pH-metric titration confirmed the formation of N, O-CMCS with predominant nitrogen substitution. The degree of substitution (DS), according to pH-metric titration, is DS=1.289.

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