Bacteria as workers in the living factory: metal-accumulating bacteria and their potential for materials science

Klaus-Joerger, T; Joerger, Ralph; Olsson, Eva; Granqvist, Claes G.

doi:10.1016/s0167-7799(00)01514-6

Cited by 595 publications

(242 citation statements)

References 47 publications

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“…Ag, Pt, Au and Pd), silver (Ag) is the metal of abundance for prospective applications in the field of biological systems, living organisms and medicine. Due to their elite properties, AgNPs appear to have quite a lot of applications, such as catalysts in chemical reactions [14,15] , electrical batteries and in spectrally discriminative coatings for absorption of solar energy [16,17] as optical elements, pharmaceutics and in chemical sensing and biosensing [18][19][20] .…”

Section: Research Papermentioning

confidence: 99%

Green Synthesis and Characterization of Silver Nanoparticles from Crocus Mathewii; A Disremembered Turkish Flowering Plant

Yildiztekin¹,

Nadeem²,

Yildiztekin³

et al. 2017

pharmaceutical-sciences

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Mahmut, et al.: Characterization of Silver Nanoparticles from Crocus mathewiiThis study reports the first ever chemical study on Crocus mathewii, a Turkish endemic and forgotten flowering plant. Silver nanoparticles were green synthesized from one mmol×l -1 silver nitrate extract of C. mathewii. The water-suspended silver nanoparticles showed a peak at 423 nm in UV/Vis spectrophotometer that suggested smaller particle size due to its less surface plasmon resonance. Transmission electron microscopy analysis also proved excellent polydispersity of quasi-spherical particle size distribution with average particles of 7.5 nm (2.5-25 nm). The presence of silver in the nanoparticles was analyzed by X-ray diffraction, while Fourier transform infrared spectroscopy analysis showed the presence of various -OH and -NH containing organics. The results proved that the crude extract of C. mathewii can be used for green synthesis of silver nanoparticles in future for medicinal uses.

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Section: Research Papermentioning

confidence: 99%

Green Synthesis and Characterization of Silver Nanoparticles from Crocus Mathewii; A Disremembered Turkish Flowering Plant

Yildiztekin¹,

Nadeem²,

Yildiztekin³

et al. 2017

pharmaceutical-sciences

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“…Metal nanoparticles exhibit unique electronic, magnetic, catalytic and optical properties that are different from those of bulk metals (1,2). Gold nanoparticles, in particular, are of interest, mainly due to their stability under atmospheric conditions, resistance to oxidation and biocompatibility (3)(4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

Microbial production of gold nanoparticles

2006

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“…Numbers of products, such as toothpaste, deodorants, bedding, washers, water purification systems, and shampoo, contain silver nanoparticles [2]. Silver nanoparticles can be synthesized by employing chemical and physical method [4,5]. Both the methods involve certain disadvantages such as toxicity, costly chemicals, require large space, and energy.…”

Section: Introductionmentioning

confidence: 99%

Green Technology Mediated Synthesis of Silver Nanoparticles From Momordica Charantia Fruit Extract and Its Bactericidal Activity

Joshi

Kaushik

Upadhyaya

et al. 2017

Asian J Pharm Clin Res

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Objective: The synthesis of nanoparticles from biological processes is evolving a new era of research interests in nanotechnology. Silver nanoparticles are usually synthesized by chemicals and physical method, which are quite toxic and flammable in nature. This study deals with an environment friendly biosynthesis process of antibacterial silver nanoparticles using Momordica charantia fruit.Methods: AgNO 3 (5 mM) was allowed to react with fruit extract of M. charantia. Biosynthesis of AgNPs was optimized by changing temperature, pH, and solvent. The silver nanoparticles so formed were characterized using ultraviolet-visible (UV-VIS) spectroscopy, Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), atomic force microscope (AFM), and scanning electron microscopy (SEM).Results: UV-VIS spectra show absorption peak between 420 and 430 nm. The FTIR analysis showed the alcoholic, lactam, and nitro group present in the plant extract, which were responsible for the reduction in AgNPs. The SEM images showed the size distribution of the nanoparticles and the average size was found to be 50-100 nm. By DLS analysis and AFM analysis, average sizes of the silver nanoparticles were of 150 nm. The results of these analyses confirmed the formation of silver nanoparticles. Silver nanoparticles were tested against Bacillus cereus and Staphylococcus epidermidis strains using disc diffusion method and were found to be effective. Conclusion:Silver nanoparticles so synthesized in this study using fruit extract of M. charantia are simple, easy, and effective technique of nanoparticles production.

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Bacteria as workers in the living factory: metal-accumulating bacteria and their potential for materials science

Cited by 595 publications

References 47 publications

Green Synthesis and Characterization of Silver Nanoparticles from Crocus Mathewii; A Disremembered Turkish Flowering Plant

Green Synthesis and Characterization of Silver Nanoparticles from Crocus Mathewii; A Disremembered Turkish Flowering Plant

Microbial production of gold nanoparticles

Green Technology Mediated Synthesis of Silver Nanoparticles From Momordica Charantia Fruit Extract and Its Bactericidal Activity

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