Extraction of Portunus Trituberculatus Chitosan and Their Characteristics
A. T. AbdurasulovInstitute of Chemistry and Physics of Polymers, Academy of Sciences of the Republic of Uzbekistan, 100128, Tashkent, Republic of UzbekistanSh. Sh. KhudoyberdiyevBukhara State University, 200114, Bukhara, Republic of UzbekistanN. R. VokhidovaInstitute of Chemistry and Physics of Polymers, Academy of Sciences of the Republic of Uzbekistan, 100128, Tashkent, Republic of UzbekistanS. Sh. RashidovaInstitute of Chemistry and Physics of Polymers, Academy of Sciences of the Republic of Uzbekistan, 100128, Tashkent, Republic of Uzbekistan
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Chitosan Portunus trituberculatus (Eschscholtz, 1823) with a molecular mass of 780 kDa and a deacetylation degree of 84% was isolated from secondary food industry waste, and its physicochemical properties and antifungal activity were studied. Chitosan solutions were demonstrated to exhibit fungicidal activity against the phytopathogen Fusarium oxysporum, forming a sterile zone with an average diameter of 24.5 ± 2 mm. Extraction of chitosan from Portunus trituberculatus is of interest for the synthesis of new derivatives and modifications of chitosan used in the agro-industrial complex.
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