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Antimicrobial properties of silver nanoparticles prepared by Acacia etbaica (Schweinf.) valve extract
- Source :
- Materials Letters. 300:130233
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Here, we employed green and very fast (clock) synthesis of silver nanoparticles (AgNPs) by means of silver nitrate and Acacia etbaica valve extract at room temperature. Transmission electron microscopy (TEM) results confirm the spherical shape and diameter (size) ranging from 6.38 ± 3.21, 10.09 ± 3.21 and 20 ± 3.21 for AeAg-1, AeAg-2 and AeAg-3, respectively. TEM results showed that size of AgNPs increase as the concentration of AgNO3 decreases due to the low concentration of bio reducing agent present in the extract. The enhanced antimicrobial activity against human pathogenic microbes was investigated by diffusion method based on zone of inhibition. The prepared AgNPs showed high specificity against the tested pathogens, namely K. pneumonia, S. typhi, S. dysenteriae, P. mirabilis, S. saprophyticus, S. aureus and C. albican with inhibition zone between 22.3 ± 2.08 mm and 11.67 ± 1.15 mm. On the other hand, the prepared AgNPs did not exhibit high specifity against E. Faecalis and P. aeruginosa. Therefore, it can be concluded that the prepared AgNPs have potential as natural antimicrobial agents against microbes with multidrug resistance.
- Subjects :
- Materials science
Inhibition zone
Reducing agent
Mechanical Engineering
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Antimicrobial
01 natural sciences
Acacia etbaica
Silver nanoparticle
0104 chemical sciences
Multiple drug resistance
Silver nitrate
chemistry.chemical_compound
chemistry
Mechanics of Materials
General Materials Science
Agar diffusion test
0210 nano-technology
Nuclear chemistry
Subjects
Details
- ISSN :
- 0167577X
- Volume :
- 300
- Database :
- OpenAIRE
- Journal :
- Materials Letters
- Accession number :
- edsair.doi...........21d871767e40d9f54317d2d21a28b145