Soil bacteria Cupriavidus sp. mediates the extracellular synthesis of antibacterial silver nanoparticles

2020 ◽  
Vol 1202 ◽  
pp. 127233 ◽  
Author(s):  
Fuad Ameen ◽  
S. AlYahya ◽  
M. Govarthanan ◽  
N. ALjahdali ◽  
N. Al-Enazi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Soil Bacteria ◽  
Extracellular Synthesis

Antimicrobial Activity of Silver Nanoparticles Synthesized by Streptomyces Species JF714876

2012 ◽  
Vol 5 (1) ◽  
pp. 1638-1642 ◽  
Author(s):  
Vidyasagar G M ◽  
Shankaravva B ◽  
R Begum ◽  
Imrose ◽  
Sagar R ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Silver Ions ◽  
Human Beings ◽  
Streptomyces Species ◽  
Force Microscopy ◽  
E Coli ◽  
Extracellular Synthesis ◽  
Atomic Force ◽  
Uv Visible

Microorganisms like fungi, actinomycetes and bacteria are considered nanofactories and are helpful in the production of nanoparticles useful in the welfare of human beings. In the present study, we investigated the production of silver nanoparticles from Streptomyces species JF714876. Extracellular synthesis of silver nanoparticles by Streptomyces species was carried out using two different media. Silver nanoparticles were examined using UV-visible, IR and atomic force microscopy. The size of silver nanoparticles was in the range of 80-100 nm. Antimicrobial activity of silver nanoparticle against bacteria such as E. coli, S. aureus, and dermatophytes like T. rubrum and T. tonsurans was determined. Thus, this study suggests that the Streptomyces sp. JF741876 can produce silver ions that can be used as an antimicrobial substance.

scholarly journals Aging reduces the toxicity of pristine but not sulphidised silver nanoparticles to soil bacteria

2018 ◽  
Vol 5 (11) ◽  
pp. 2618-2630 ◽  
Author(s):  
Carolin L. Schultz ◽  
Joanna Gray ◽  
Rudo A. Verweij ◽  
Martí Busquets-Fité ◽  
Victor Puntes ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Organic Matter ◽  
Natural Organic Matter ◽  
Soil Bacteria

Aging of silver nanoparticles shows soluble silver driving toxicity in ISO medium, but not in media containing natural organic matter.

Extracellular synthesis of silver nanoparticles by a silver-tolerant yeast strain MKY3

2002 ◽  
Vol 14 (1) ◽  
pp. 95-100 ◽  
Author(s):  
Meenal Kowshik ◽  
Shriwas Ashtaputre ◽  
Sharmin Kharrazi ◽  
W Vogel ◽  
J Urban ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Yeast Strain ◽  
Extracellular Synthesis

Extracellular Synthesis of Crystalline Silver Nanoparticles and Molecular Evidence of Silver Resistance fromMorganellasp.: Towards Understanding Biochemical Synthesis Mechanism

ChemBioChem ◽  
2008 ◽  
Vol 9 (9) ◽  
pp. 1415-1422 ◽  
Author(s):  
Rasesh Y. Parikh ◽  
Sanjay Singh ◽  
B. L. V. Prasad ◽  
Milind S. Patole ◽  
Murali Sastry ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Molecular Evidence ◽  
Synthesis Mechanism ◽  
Extracellular Synthesis

scholarly journals Green Synthesis Concept of Nanoparticles From Environmental Bacteria and Their Effects on Pathogenic Bacteria

2020 ◽  
pp. 1289-1297
Author(s):  
Ghada Mohammed Saleh
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Soil Bacteria ◽  
Pathogenic Bacteria ◽  
Pseudomonas Sp ◽  
Good Source ◽  
Force Microscopy ◽  
Atomic Force ◽  
Environmental Bacteria ◽  
Inhibition Zones

Soil bacteria play an interesting role in the reduction of Ag+ ions and the formation of silver nanoparticles (AgNPs), which may be a good source for nanoparticles and play a major role in nanotechnology applications. The concept of this project was to study the effects of these environmentally produced nanoparticles on the growth of some pathogenic bacteria. The environmental bacteria were isolated from soil, purified on broth cultures, and centrifuged, while the supernatant was extracted to detect its ability to convert silver nitrate to nanoparticles. The AgNPs was detected by Atomic Force Microscopy (AFM), while Granularity Cumulating Distribution (GCD) was employed to estimate the AgNPs sizes. The results showed the synthesis of AgNPs with sizes of 63.50nm and 45.81nm from the extracts of environmental Pseudomonas sp. and Enterobacter, respectively. The synthesized AgNPs from the extracts of all environmental bacteria showed antibacterial activity against some pathogenic bacteria (Gram positive and Negative) with variable inhibition zones. In conclusion, environmental bacteria can be a cheap source of nanoparticles.

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