Antifungal Activity of Chitin, Chitosan and their Derivatives from Artemia Parthenogenetica Cystes of the Aral Sea against Phytopathogenic Fungi
UZ Karakalpak Scientific Research Institute of Natural Sciences, UZ Karakalpak Branch of the Academy of Sciences of the Republic of Uzbekistan, Karakalpakstan.
Berdakh Avenue 41, Nukus city, Republic of Karakalpakstan, Uzbekistan, 230100
*Corresponding author
Abstract:
In the present study, the antimicrobial activity of chitin, chitosan, and their carboxymethylated and sulfated derivatives obtained from the cysts of Artemia partenogenetica from the Aral Sea was evaluated against phytopathogenic fungi. The antifungal activity was studied using the disk diffusion method on PDA medium, followed by measuring the inhibition zones of fungal growth. The results showed that low-molecular-weight chitosan (???-1) exhibited the highest antifungal activity, with growth inhibition zones up to 30 mm against F. vasinfectum and V. dahliae. Carboxymethyl derivatives (???? and ????) demonstrated significantly lower activity (6–24 mm), which can be attributed to the reduction of the macromolecule’s cationic charge. Sulfated forms (???-1 and ???-2) retained high activity comparable to native chitosan, with inhibition zones up to 27–30 mm against F. culmorum and F. vasinfectum, confirming the effectiveness of sulfation in enhancing antifungal properties. The obtained data emphasize the practical significance of chemically modified chitosan derivatives for plant protection against phytopathogenic fungi and highlight their potential for developing safe and efficient biofungicides.
Keywords: Chitosan, carboxymethylated, sulfated, phytopathogenic fungi
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How to cite this article:
Karlybaeva B. P., Yerniyazova I. Zh., Khajibaev K. G. and Berdimbetova G. E. 2025. Antifungal Activity of Chitin, Chitosan and their Derivatives from
Artemia Parthenogenetica Cystes of the Aral Sea against Phytopathogenic Fungi.
Int.J.Curr.Microbiol.App.Sci. 14(10): 140-145. doi:
https://doi.org/10.20546/ijcmas.2025.1410.013
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