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Galactosylated derivatives of low-molecular-weight chitosan: Obtaining and properties

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Abstract

Chitosan, a binary heteropolysaccharide consisting of 2-acetamide-2-deoxy-β-D-glucopyranose and 2-amino-2-deoxy-β-D-glucopyranose residues linked in different proportions via β-glycosidic bonds. The presence of a primary amino group in the chitosan structure allows for the synthesis of various derivatives. The procedure of obtaining activated N-hydroxysuccinimide esters with the use of lactobionic acid was applied to obtain galactosylated derivatives of low-molecular-weight chitosan with a substitution degree varying from 8 to 23%. The properties of these derivatives (viscosity, solubility, and biodegradability) were studied. These derivatives are well soluble at pH values greater than the acidity constant of amino groups of chitosan (6.5). Broadening the pH range towards increase and the presence of galactose residues allows these derivatives to be used in working with biological objects.

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Authors and Affiliations

  1. Bioengineering Center, Russian Academy of Sciences, Moscow, 117312, Russia

    A. V. Il’ina & V. P. Varlamov

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  1. A. V. Il’ina
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  2. V. P. Varlamov
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Original Russian Text © A. V. Il’ina, V.P. Varlamov, 2007, published in Prikladnaya Biokhimiya i Mikrobiologiya, 2007, Vol. 43, No. 1, pp. 82–87.

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Il’ina, A.V., Varlamov, V.P. Galactosylated derivatives of low-molecular-weight chitosan: Obtaining and properties. Appl Biochem Microbiol 43, 73–77 (2007). https://doi.org/10.1134/S0003683807010139

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  • DOI: https://doi.org/10.1134/S0003683807010139

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