Activity study of biogenic spherical silver nanoparticles towards microbes and oxidants

Anand, K.; Mandal, Badal Kumar

doi:10.1016/j.saa.2014.07.013

Cited by 48 publications

(10 citation statements)

References 46 publications

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“…12,41 , where frequency and band width of SPR is not only depending on both size and shape of the metal nanoparticles but also on the dielectric constant characterized the metal itself as well as adjacent medium 47 . Many studies have been reported the potentiality of various cyanobacteria crude extracts for synthesizing silver nanoparticles 15,39,48 . Mahdieh et al .…”

Section: Resultsmentioning

confidence: 99%

“…14 considered Spirulina Platensis and Nostoc linckia as nanofactors according to presence of many bioactive substances. Usage of microorganisms enables synthesis of silver nanoparticles through acting as a reducing agent as well as functionalizing nanoparticles surface 15 . Consequently, these multifunctional cyanobacteria significantly decrease reaction stages as well as prevent the need of external stabilizing agents.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and biological characterization of silver nanoparticles derived from the cyanobacterium Oscillatoria limnetica

Hamouda

Hussein

Abo-Elmagd

et al. 2019

Sci Rep

477

270

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Using aqueous cyanobacterial extracts in the synthesis of silver nanoparticle is looked as green, ecofriendly, low priced biotechnology that gives advancement over both chemical and physical methods. In the current study, an aqueous extract of Oscillatoria limnetica fresh biomass was used for the green synthesis of Ag-NPs, since O. limnetica extract plays a dual part in both reducing and stabilizing Oscillatoria-silver nanoparticles (O-AgNPs). The UV-Visible absorption spectrum, Fourier transforms infrared (FT-IR), transmission electron microscopy (TEM) and scanning electron microscope (SEM) were achieved for confirming and characterizing the biosynthesized O-AgNPs. TEM images detected the quasi-spherical Ag-NPs shape with diverse size ranged within 3.30–17.97 nm. FT-IR analysis demonstrated the presence of free amino groups in addition to sulfur containing amino acid derivatives acting as stabilizing agents as well as the presence of either sulfur or phosphorus functional groups which possibly attaches silver. In this study, synthesized Ag-NPs exhibited strong antibacterial activity against multidrug-resistant bacteria (Escherichia coli and Bacillus cereus) as well as cytotoxic effects against both human breast (MCF-7) cell line giving IC50 (6.147 µg/ml) and human colon cancer (HCT-116) cell line giving IC50 (5.369 µg/ml). Hemolytic activity of Ag-NPs was investigated and confirmed as being non- toxic to human RBCs in low concentrations.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and biological characterization of silver nanoparticles derived from the cyanobacterium Oscillatoria limnetica

Hamouda

Hussein

Abo-Elmagd

et al. 2019

Sci Rep

477

270

View full text Add to dashboard Cite

show abstract

“…Figure 1 shows the UV-Vis spectra of the obtained nanoparticles in aqueous solution. The spherical Ag and Cu NPs exhibit single plasmonic band, whereas the anisotropic NPs show two or more bands because of quadrupole and multipole plasmon excitations [72]. The bimetallic particles have a strong localized surface plasmon resonance peak at 408 nm and 410 nm for the Ag core /Cu shell and Ag/Cu (alloys) , respectively.…”

Section: Resultsmentioning

confidence: 99%

The Antibacterial and Antifungal Textile Properties Functionalized by Bimetallic Nanoparticles of Ag/Cu with Different Structures

Paszkiewicz

Gołąbiewska

Rajski³

et al. 2016

Journal of Nanomaterials

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We reported a preparation and characterization of five kinds of impregnation solutions, containing Ag/Cu in the form of bimetallic nanoparticles (alloy and core-shell) as well as ionic species. The cotton-polyester textiles were successfully impregnated during the washing and ironing process by as-prepared solutions to have antibacterial and antifungal properties against toEscherichia coli,Staphylococcus aureus,andCandida albicans. Moreover, we have reported the effect of type of the fabric used and number of washing/impregnation cycles (in a laboratory scale) on the bactericidal and fungicidal activity of obtained textiles. The results indicated that all tested samples after 5, 10, 15, and 20 washing/impregnated cycles exhibited an antimicrobial activity. The antifungal tests showed that only textile impregnated with solutions containing Ag+/Cu2+and Ag NPs/Cu2+exhibited a strong inhibition of fungi growth of the after 5 (99.99%) and 15 (100%) washing/impregnation cycles, respectively.

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“…Minimum inhibitory concentration exhibited by silver nanoparticle synthesised using rice paper plant stem (Zeng et al, 2007) and bamboo leaves (Sohail, Liu, & Yao, 2013) were found to be 14.1 and 20 mg L -1 , respectively. Similarly, Terminalia bellirica fruit extract (Anand & Mandal, 2015) and Withania somnifera leaf extract (Raut, Mendhulkar, & Kashid, 2014) synthesized SNPs displayed MIC of 20 mg mL -1 against both E.coli and S. aureus and 1.8 ± 0.20 and 1.2 ± 0.14 mg L -1 respectively, while Paederia foetida mediated leaf extracts (Kumar, Singh, Halder, & Mitra, 2014) showed 5.394 and 4.454 mg L -1 MIC for E.coli and S. aureus, respectively. Overall, the results of this report, pointed out that the silver nanoparticle produced by Z. mauritiana showed excellent antibacterial activity compared to the plant extract.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Rapid green synthesis of silver nano particles from <i>Ziziphus mauritiana</i> and antibacterial activity against human pathogens

Sivaji

Palaniyandi

2019

Acta Sci. Biol. Sci.

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A novel green source Ziziphus mauritiana fresh young leaves was opted to synthesize silver nanoparticles and analyze its antibacterial activity. The bioactive compounds present in the plant extracts reduced silver ions to NPs, indicated by change in color from red to dark brown. In this study, we have successfully synthesized nanoparticles using Z. mauritiana aqueous leaf extract as a reducing agent and the reaction process of synthesized nanoparticles was monitored by UV-Vis spectroscopy. The UV-Vis absorption peak showed maximum adsorption at 420 nm confirmed the silver nanoparticles synthesis. Further characterization was carried out by FTIR and the results recorded a downward shift of absorption the bands between 400 to 4000 cm-1 indicates the formation of silver nanoparticles. Finally, the present research was exploited to study the antibacterial activity of synthesized nanoparticles produced Z. mauritiana was studied using different pathogenic bacteria such as Salmonella sp., Proteus sp., Bacillus sp., Klebsiella pneumonia and E.coli from the well diffusion results, the synthesized silver nanoparticles displayed the best antibacterial property as compared to the antibiotic has been reported in this paper. To the best of our knowledge, this is the first report that the Z. mauritiana aqueous extract facilitate the synthesis of silver nanoparticles and also exhibits antibacterial activity.

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Activity study of biogenic spherical silver nanoparticles towards microbes and oxidants

Cited by 48 publications

References 46 publications

Synthesis and biological characterization of silver nanoparticles derived from the cyanobacterium Oscillatoria limnetica

Synthesis and biological characterization of silver nanoparticles derived from the cyanobacterium Oscillatoria limnetica

The Antibacterial and Antifungal Textile Properties Functionalized by Bimetallic Nanoparticles of Ag/Cu with Different Structures

Rapid green synthesis of silver nano particles from <i>Ziziphus mauritiana</i> and antibacterial activity against human pathogens

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