Formation of Ag/AgCl nanoparticles in the matrix of the exopolysaccharide of a diazotrophic strain Azotobacter chroococcum XU1
| Autor: | K. D. Davranov, Li Wen Jun, B. A. Rasulov |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
biology
Chemistry Scanning electron microscope Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology medicine.disease_cause biology.organism_classification 01 natural sciences Applied Microbiology and Biotechnology Microbiology 0104 chemical sciences Colloid Ultraviolet visible spectroscopy Fusarium oxysporum medicine Azotobacter chroococcum Verticillium dahliae Absorption (chemistry) 0210 nano-technology Nuclear chemistry |
| Zdroj: | Microbiology. 86:197-201 |
| ISSN: | 1608-3237 0026-2617 |
| DOI: | 10.1134/s0026261717020175 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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