Autoclave-assisted green synthesis of silver nanoparticles using A. fumigatus mycelia extract and the evaluation of their physico-chemical properties and antibacterial activity
| Autor: | Hamideh Vaghari, Sarah Ghanbari, Hoda Jafarizadeh-Malmiri, Mohammad Adibpour, Zahra Sayyar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
silver nanoparticles
A fumigatus Health Toxicology and Mutagenesis General Chemical Engineering 02 engineering and technology 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering Silver nanoparticle Aspergillus fumigatus Catalysis Autoclave response surface methodology antibacterial activity Environmental Chemistry Response surface methodology QD1-999 Mycelium biology Renewable Energy Sustainability and the Environment Chemistry green synthesis aspergillus fumigatus 021001 nanoscience & nanotechnology biology.organism_classification 0104 chemical sciences Fuel Technology 0210 nano-technology Antibacterial activity Nuclear chemistry |
| Zdroj: | Green Processing and Synthesis, Vol 7, Iss 3, Pp 217-224 (2018) |
| ISSN: | 2191-9550 2191-9542 |
| Popis: | Silver nanoparticles (AgNPs) were synthesized using Aspergillus fumigatus (A. fumigatus) mycelia extract via the hydrothermal method. The main reducing and stabilizing groups and components of A. fumigatus extract, such as amine, hydroxyl, amid, protein, enzymes, and cell saccharide compounds, were identified by Fourier transform infrared (FT-IR). Central composition design was used to plan the experiments, and response surface methodology was applied to evaluate of the effects of independent variables, including the amount of the prepared extract (5–7 ml) and heating time (10–20 min) at 121°C and 1.5 bar), on the particle size of the synthesized AgNPs, as manifested in broad emission peak (λmax). More stable and spherical monodispersed AgNPs, with mean particle size, polydispersity index (PDI) value, and maximum ζ potential value of 23 nm, 0.270, and +35.3 mV, respectively, were obtained at the optimal synthesis conditions using 7 ml of A. fumigatus extract and heating time of 20 min. The synthesized AgNPs indicated high antibacterial activity against both Gram-positive and Gram-negative bacteria. |
| Databáze: | OpenAIRE |
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