Bacterial flagella as biotemplate for the synthesis of silver nanoparticle impregnated bionanomaterial

Gopinathan, Priya; Ashok, Anuradha; Selvakumar, R.

doi:10.1016/j.apsusc.2013.03.159

Cited by 36 publications

(20 citation statements)

References 19 publications

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“…Our group used similar approach to develop one dimensional silver nanoparticle coated nano/micro structure using Salmonella typhimurium agella. 35 In this work, we have demonstrated two different approaches to prepare agella based silver nanoparticle coated bionanomaterial ( Fig. 5) having increased conductivity.…”

Section: Microorganism Based Biotemplatementioning

confidence: 88%

Recent advances in the synthesis of inorganic nano/microstructures using microbial biotemplates and their applications

et al. 2014

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Section: Microorganism Based Biotemplatementioning

confidence: 88%

Recent advances in the synthesis of inorganic nano/microstructures using microbial biotemplates and their applications

et al. 2014

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“…In recent years, the potential of biosynthesis of Ag NPs using bacteria has been realized [ 15 , 153 , 156 – 159 ]. For instance, Pseudomonas stutzeri AG259—isolated from silver mine was used to produce Ag NPs inside the cells [ 167 ].…”

Section: Synthesis and Characterization Of Silver Nanoparticlesmentioning

confidence: 99%

A review on biosynthesis of silver nanoparticles and their biocidal properties

2018

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Use of silver and silver salts is as old as human civilization but the fabrication of silver nanoparticles (Ag NPs) has only recently been recognized. They have been specifically used in agriculture and medicine as antibacterial, antifungal and antioxidants. It has been demonstrated that Ag NPs arrest the growth and multiplication of many bacteria such as Bacillus cereus, Staphylococcus aureus, Citrobacter koseri, Salmonella typhii, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumonia, Vibrio parahaemolyticus and fungus Candida albicans by binding Ag/Ag+ with the biomolecules present in the microbial cells. It has been suggested that Ag NPs produce reactive oxygen species and free radicals which cause apoptosis leading to cell death preventing their replication. Since Ag NPs are smaller than the microorganisms, they diffuse into cell and rupture the cell wall which has been shown from SEM and TEM images of the suspension containing nanoparticles and pathogens. It has also been shown that smaller nanoparticles are more toxic than the bigger ones. Ag NPs are also used in packaging to prevent damage of food products by pathogens. The toxicity of Ag NPs is dependent on the size, concentration, pH of the medium and exposure time to pathogens.

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“…Nowadays, development of green synthesis of metallic nanoparticles and their applications is one of the most important areas of research. For synthesizing of silver nanoparticles (AgNPs), several methods such as chemical synthesis [1], electrochemical [2], radiation [3,4], photochemical [5], and biological synthesis [6][7][8][9] have been used. In comparison with other methods, biological methods for synthesis of AgNPs are environmental friendly.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles using extract of olive leaf: synthesis and in vitro cytotoxic effect on MCF-7 cells

Rashidipour

Heydari

2014

J Nanostruct Chem

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A green synthetic approach using olive leaf extract was optimized for preparing silver nanoparticles (AgNPs). Parameters affecting the formation of nanoparticles such as temperature, exposure time to extract, pH, concentration of silver nitrate, and extract (ratio of plant sample to extraction solvent) were investigated and optimized. Optimum conditions for the synthesis of silver nanoparticles are as follows: Ag ? concentration 1 mM, extract concentration, 8 % w/v; pH = 7, time, 4 h and temperature, 45°C. Synthesized silver nanoparticles were characterized using UV-Visible absorption spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, dynamic light scattering (DLS), and scanning electron microscopy (SEM). SEM and DLS analysis showed that the synthesized AgNPs were predominantly spherical in shape with an average size of 90 nm. The cytotoxicity activities of the synthesized AgNPs and olive leaves extract containing AgNPs against human breast cancer cell (MCF-7) were investigated and the inhibitory concentration (IC 50) was found to be 50 and 0.024 lg/mL at 24 h incubation, respectively. This eco-friendly and cost-effective synthesis method can be potentially used for large-scale production of silver nanoparticles.

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Bacterial flagella as biotemplate for the synthesis of silver nanoparticle impregnated bionanomaterial

Cited by 36 publications

References 19 publications

Recent advances in the synthesis of inorganic nano/microstructures using microbial biotemplates and their applications

Recent advances in the synthesis of inorganic nano/microstructures using microbial biotemplates and their applications

A review on biosynthesis of silver nanoparticles and their biocidal properties

Biosynthesis of silver nanoparticles using extract of olive leaf: synthesis and in vitro cytotoxic effect on MCF-7 cells

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