Formation of Ag/AgCl nanoparticles in the matrix of the exopolysaccharide of a diazotrophic strain Azotobacter chroococcum XU1
Bakhtiyor A. RasulovInstitute of Genetics and Plants Experimental Biology, Uzbekistan Academy of Sciences, Toshkent, UzbekistanKakhramon DavranovNational University of Uzbekistan named after Mirzo Ulughbek, Tashkent city, UzbekistanLi Wen JunXinjiang Institute of Ecology and Geography, Urumqi, PR China
ABI
Аннотация
A complex of Ag/AgCl nanoparticles was synthesized on the basis of the extracellular polysaccharide of Azotobacter chroococcum XU1 and 10 mM AgNO3 solution. The complex was characterized by UV spectroscopy, X-ray diffraction, and scanning electron microscopy. Colloidal solutions of the complex had absorption peaks at 260 and 420 nm, indicating the formation Ag/AgCl nanoparticles. The size of the nanoparticles varied from 6 to 50 nm. The nanobiocomposite consisting of the exopolysaccharide matrix and Ag/AgCl nanoparticles exhibited a fungicidal effect against such plant pathogens as Fusarium oxysporum f. sp. vasinfectum and Verticillium dahliae.
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