Мақола

Solubilization of Gossypol with Polyvinylpyrrolidone

Mukhtarjan MukhamedievNational University of Uzbekistan named after Mirzo Ulugbek, Vuzgorodok, 100174, Tashkent, UzbekistanDilfuza GafurovaNational University of Uzbekistan named after Mirzo Ulugbek, Vuzgorodok, 100174, Tashkent, UzbekistanD. Zh. BekchanovNational University of Uzbekistan named after Mirzo Ulugbek, Vuzgorodok, 100174, Tashkent, UzbekistanDilbar ShakhidovaNational University of Uzbekistan named after Mirzo Ulugbek, Vuzgorodok, 100174, Tashkent, UzbekistanT. Kh. RakhimovNational University of Uzbekistan named after Mirzo Ulugbek, Vuzgorodok, 100174, Tashkent, Uzbekistan

Russian Journal of Applied Chemistryjournal2023en

ABI

Аннотация

The physicochemical features of the solubilization of gossypol (GS) with polyivinylpyrrolidone (PVP) were studied. In contrast to the initial polyphenol, the solubilization product is a water-soluble supramolecular complex. As shown by IR spectroscopy, the complexation of PVP with GS occurs via hydrogen bonding between the carbonyl oxygen atom of the pyrrolidone ring of the polymer and hydroxyl proton of polyphenol. The relative viscosity of aqueous solutions of the supramolecular complex depends on its composition and passes through a minimum with the lowest value of the PVP : GS ratio close to 2 : 1. That is, at this component ratio, the structure of the complex in an aqueous medium is the most compact. The GS solubilization with PVP can be presented as adsorption of the polyphenol onto the polymer and can be described by the Langmuir monomolecular adsorption theory.

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Research in Cotton Cultivation

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DOI: 10.1134/s1070427223120054

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