Properties of Bacterial Cellulose Composites with Silver Nanoparticles
| Autor: | Ekaterina I. Shishatskaya, Ivan P. Shidlovskiy, Anna A. Shumilova, Tatiana G. Volova |
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| Rok vydání: | 2018 |
| Předmět: |
biology
Scanning electron microscope Composite number Biophysics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Silver nanoparticle 0104 chemical sciences chemistry.chemical_compound Differential scanning calorimetry chemistry Bacterial cellulose Elemental analysis Composite material 0210 nano-technology Acetic acid bacteria Antibacterial activity |
| Zdroj: | Biophysics. 63:519-525 |
| ISSN: | 1555-6654 0006-3509 |
| DOI: | 10.1134/s0006350918040188 |
| Popis: | Composites of bacterial cellulose, which were synthesized in a culture of the strain of acetic acid bacteria Komagataeibacter xylinus VKPM B-12068, with silver nanoparticles were produced hydrothermally by varying the concentrations of AgNO3 in the medium. The presence of silver in the composites was confirmed by elemental analysis. An increase in the number of silver nanoparticles in the composite from 1.08 to 9.1 wt % (from 0.044 to 0.370 mg/cm2) was shown under increasing AgNO3 concentration in the medium from 0.0001 to 0.01 M. The structure, properties of the surface, and the physicochemical properties of the composites depending on the silver content were investigated using scanning electron microscopy, differential scanning calorimetry, X-ray diffraction, and a water contact-angle measurement system. Using the disk-diffusion method, it was shown that the resulting composites have a pronounced antibacterial activity against pathogenic microflora E. coli, Ps. eruginosa, and St. aureus. |
| Databáze: | OpenAIRE |
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