In this study, a chitosan/copper (Ch/Cu²⁺) polymetallic complex was synthesized
from chitosan obtained by the cryogenic method from Apis mellifera bees. The structural and
physicochemical properties of the complex were investigated using FTIR, UV-Vis, XRD, TGA, and
DLS analyses. FTIR spectra showed shifts in absorption bands at 1400-1339 cm⁻¹ and 1640-1550
cm⁻¹, confirming the coordination of Cu²⁺ ions with amino and hydroxyl groups. UV-Vis spectra
revealed absorption peaks in the 410-540 nm range, while XRD analysis indicated new crystalline
peaks at 2θ = 24°, 27°, and 37°. Thermal analysis demonstrated high thermal stability of the complex,
and DLS confirmed a uniform distribution of nanoparticles in solution. A 0.5% Ch/Cu²⁺ solution was
tested against phytopathogens causing rust disease in winter wheat. No negative effects on seed
germination or growth were observed. Compared with the “Titul Duo” preparation, the complex
exhibited higher biological efficacy. The results indicate that this material is a promising and
environmentally safe bioprotective agent for agricultural applications
In this study, a chitosan/copper (Ch/Cu²⁺) polymetallic complex was synthesized
from chitosan obtained by the cryogenic method from Apis mellifera bees. The structural and
physicochemical properties of the complex were investigated using FTIR, UV-Vis, XRD, TGA, and
DLS analyses. FTIR spectra showed shifts in absorption bands at 1400-1339 cm⁻¹ and 1640-1550
cm⁻¹, confirming the coordination of Cu²⁺ ions with amino and hydroxyl groups. UV-Vis spectra
revealed absorption peaks in the 410-540 nm range, while XRD analysis indicated new crystalline
peaks at 2θ = 24°, 27°, and 37°. Thermal analysis demonstrated high thermal stability of the complex,
and DLS confirmed a uniform distribution of nanoparticles in solution. A 0.5% Ch/Cu²⁺ solution was
tested against phytopathogens causing rust disease in winter wheat. No negative effects on seed
germination or growth were observed. Compared with the “Titul Duo” preparation, the complex
exhibited higher biological efficacy. The results indicate that this material is a promising and
environmentally safe bioprotective agent for agricultural applications
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Ikhtiyarova G. . | DSc, Professor | Tashkent State Technical University, Tashkent city; |
| 2 | Isomitdinova D.S. | PhD Student | Tashkent State Technical University, Tashkent city; |
| 3 | Kuchkarbayeva N.M. | Research | Tashkent State Technical University, Tashkent city; |
| 4 | Ergasheva N.A. | Research | Bukhara State Medical Institute, Bukhara city, Republic of Uzbekistan |
| № | Name of reference |
|---|---|
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