Chitosan antiviral activity: Dependence on structure and depolymerization method

Enzymatic (the action of lysozyme) and chemical (the action of hydrogen peroxide) hydrolysis of chitosans with various degree of acetylation (DA)--25, 17, and 1.5%--was performed. Purification and fractioning of the hydrolysis products were performed using dialysis, ultrafiltration, and gel-penetrat...

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Published inApplied biochemistry and microbiology Vol. 47; no. 1; pp. 103 - 108
Main Authors Davydova, V. N, Nagorskaya, V. P, Gorbach, V. I, Kalitnik, A. A, Reunov, A. V, Solov'eva, T. F, Ermak, I. M
Format Journal Article
LanguageEnglish
Published Dordrecht Dordrecht : SP MAIK Nauka/Interperiodica 2011
SP MAIK Nauka/Interperiodica
Springer Nature B.V
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Abstract Enzymatic (the action of lysozyme) and chemical (the action of hydrogen peroxide) hydrolysis of chitosans with various degree of acetylation (DA)--25, 17, and 1.5%--was performed. Purification and fractioning of the hydrolysis products were performed using dialysis, ultrafiltration, and gel-penetrating chromatography. Low-molecular (LM) derivatives of the polysaccharide with molecular masses from 17 to 2 kDa were obtained. The study of their antiviral activity against the tobacco mosaic virus (TMV) showed that these samples inhibited the formation of local necroses induced by the virus for 50-90%. The antiviral activity of the LM chitosans significantly increased with the lowering of their polymerization degree. Furthermore, the products of the enzymatic hydrolysis possessed lower activity than the chitosan samples obtained as a result of chemical hydrolysis. It was revealed that the exhibition of the antiviral activity weakly depended on the degree of acetylation of the samples.
AbstractList Enzymatic (the action of lysozyme) and chemical (the action of hydrogen peroxide) hydrolysis of chitosans with various degree of acetylation (DA)--25, 17, and 1.5%--was performed. Purification and fractioning of the hydrolysis products were performed using dialysis, ultrafiltration, and gel-penetrating chromatography. Low-molecular (LM) derivatives of the polysaccharide with molecular masses from 17 to 2 kDa were obtained. The study of their antiviral activity against the tobacco mosaic virus (TMV) showed that these samples inhibited the formation of local necroses induced by the virus for 50-90%. The antiviral activity of the LM chitosans significantly increased with the lowering of their polymerization degree. Furthermore, the products of the enzymatic hydrolysis possessed lower activity than the chitosan samples obtained as a result of chemical hydrolysis. It was revealed that the exhibition of the antiviral activity weakly depended on the degree of acetylation of the samples.
Enzymatic (the action of lysozyme) and chemical (the action of hydrogen peroxide) hydrolysis of chitosans with various degree of acetylation (DA)--25, 17, and 1.5%--was performed. Purification and fractioning of the hydrolysis products were performed using dialysis, ultrafiltration, and gel-penetrating chromatography. Low-molecular (LM) derivatives of the polysaccharide with molecular masses from 17 to 2 kDa were obtained. The study of their antiviral activity against the tobacco mosaic virus (TMV) showed that these samples inhibited the formation of local necroses induced by the virus for 50-90%. The antiviral activity of the LM chitosans significantly increased with the lowering of their polymerization degree. Furthermore, the products of the enzymatic hydrolysis possessed lower activity than the chitosan samples obtained as a result of chemical hydrolysis. It was revealed that the exhibition of the antiviral activity weakly depended on the degree of acetylation of the samples.[PUBLICATION ABSTRACT]
Author Ermak, I. M
Nagorskaya, V. P
Reunov, A. V
Kalitnik, A. A
Davydova, V. N
Gorbach, V. I
Solov'eva, T. F
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  fullname: Kalitnik, A. A
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  fullname: Reunov, A. V
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  fullname: Solov'eva, T. F
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  fullname: Ermak, I. M
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Keywords Chitosan Derivative
Chitosan
Antiviral Activity
Tobacco Mosaic Virus
Apply Biochemistry
Language English
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Snippet Enzymatic (the action of lysozyme) and chemical (the action of hydrogen peroxide) hydrolysis of chitosans with various degree of acetylation (DA)--25, 17, and...
Enzymatic (the action of lysozyme) and chemical (the action of hydrogen peroxide) hydrolysis of chitosans with various degree of acetylation (DA)—25, 17, and...
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StartPage 103
SubjectTerms Antimicrobial agents
Biochemistry
Biomedical and Life Sciences
Carbohydrates
Dialysis
Enzymes
Hydrogen peroxide
Hydrolysis
Life Sciences
Medical Microbiology
Microbiology
Pathogens
Plant diseases
Tobacco mosaic virus
Ultrafiltration
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Title Chitosan antiviral activity: Dependence on structure and depolymerization method
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