Synthesis of stable nanosilver particles (AgNPs) by the proteins of seagrass Syringodium isoetifolium and its biomedicinal properties

Ahila, Natarajan Kumari; Ramkumar, Vijayan Sri; Prakash, S.; Balakrishnan, M.; Ravindran, J.; Dhanalakshmi, P.K.; Ethiraj, Kannapiran

doi:10.1016/j.biopha.2016.09.004

Cited by 46 publications

(22 citation statements)

References 52 publications

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“…AgNPs can also be used as a biomaterial for antimicrobial studies. AgNPs of different sizes antimicrobial effect is size dependent and 1-10 nm AgNPs can interact with bacteria directly [34,55] uniform linoleic acid capped AgNPs AgNPs possessed nearly the same toxicity as antibiotic (kanamycin and erythromycin) [59] biosynthesised AgNPs from Carica Papaya peel extract 5 μg/ml concentration of AgNPs showed antibacterial activity [60] biosynthesised AgNPs from proteins of sea grass minimum concentration inhibition found at (0.24 nM; maximum activity=14.3-0.12 mm and minimum activity=11.2-0.38 mm) [61] radiation synthesised AgNPs small amount of AgNPs (21.81 μgm/cm 2 ) coated on cotton fabric exhibited antimicrobial effects [62] mycosynthesised AgNPs bacterial species were found sensitive at 20 mg/ml [63] AgNPs with silica and lignin hybrid materials inhibition activity was found at the highest concentration of 500 µg/100 µl [64] AgNPs with sponges AgNPs increased chitosan antimicrobial effects [65] AgNPs with coaxial nanofibres zone of inhibition measured as 13 and 11 mm [66] drug and AgNP complex tetracycline − AgNP complex inhibited because it released a higher amount of silver ions [67]…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial effect of silver nanoparticles (AgNPs) and their mechanism – a mini review

Kalwar

Shan

2018

Micro & Nano Letters

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Silver nanoparticles (AgNPs) are widely utilised in the industry and health care. This review demonstrates an exhaustive report on the toxicity of AgNPs towards pathogenic microbes. AgNPs are the most abundant antimicrobial agent for bacteria than other species and less harmful to human cells than to bacterial cells. This report suggests the relatively high acute toxicity of AgNPs to the microorganism. In addition, the toxicity mechanism of AgNPs is briefly discussed.

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Section: Discussionmentioning

confidence: 99%

Antimicrobial effect of silver nanoparticles (AgNPs) and their mechanism – a mini review

Kalwar

Shan

2018

Micro & Nano Letters

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“…The FE-SEM analysis revealed that ps-AgNPs had a smooth spherical surface. Due to the "encapsulation" of the protective agent, the edges of the particles were lighter than the centers, causing them to be oval/elliptical in shape [32]. The characteristics of agglomeration among nanoparticles were also observed on account of their high surface tension and energy.…”

Section: Fe-sem and Tem Analysismentioning

confidence: 99%

Dispersibility and Size Control of Silver Nanoparticles with Anti-Algal Potential Based on Coupling Effects of Polyvinylpyrrolidone and Sodium Tripolyphosphate

Wang

et al. 2020

Nanomaterials

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In nearly all the cases of biotoxicity studies of silver nanoparticles (AgNPs), AgNPs used often have general dispersibility and wide size distribution, which may inevitably generate imprecise results. Herein, a kind of synthesis method by coupling effects of polyvinylpyrrolidone (PVP) and sodium tripolyphosphate (STPP) was proposed, in order to prepare AgNPs with better dispersibility and a stable size. Based on this, the preparation mechanism of AgNPs and the potential anti-algae toxicity were analyzed. UV-vis analysis showed that the particle size distribution of AgNPs prepared by co-protective agents was more uniform. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and energy dispersive X-ray (EDX) were used to confirm that the obtained nano silver was of a high purity and stable size (~30 nm in diameter). Zeta potential and Fourier transform infrared spectroscopy (FTIR) analysis results indicated the synthesis mechanism of AgNPs by co-protective agents, more precisely, PVP limited the polynegative effect and prevented the linear induction of P3O105− produced by STPP during the growth of silver nuclei. Subsequently, Chlorella and Scenedesmus obliquus were utilized to test the toxicity of AgNPs, confirming that AgNPs synthesized through co-protective agents have potential inhibitory ability on algae, but not severe. This study provides a basic theory for the induction of synthetic AgNPs by various factors in the natural environment and a scientific reference for the environmental risk assessment.

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“…6 showed the presence of elemental silver of AgNPs with a sharp signal at around 3 keV. Silver nanoparticles generally show typical optical absorption band in the range of 3-4 keV due to surface plasmon resonance [24,25]. The signal of Cu shown in EDX spectrum (Fig.…”

Section: Uv-visible Analysis Of Synthesized Silver Nanoparticlesmentioning

confidence: 93%

Synthesis and Characterization of Silver Nanoparticles using Aqueous Extract of Citrus maxima Leaf

Basumatary¹,

Changmai²

2018

Asian J. Chem.

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Plant-based synthesis of silver nanoparticles is an environmental friendly method which is gaining increasing attention among the researchers as plants are readily available, non-toxic, safe to handle, cost-effective and possess a wide variability of secondary metabolites which act as both natural reducing and capping agents in silver nanoparticles synthesis. In present study, silver nanoparticles have been synthesized successfully using aqueous extract of leaves of Citrus maxima Merr. Silver nanoparticles formed were characterized by ultraviolet-visible spectrophotometer, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction pattern, EDX and FT-IR spectrometer. The synthesized nanoparticles are spherical in shape, polycrystalline nature and ranged from 2 to 25 nm in size. The leaf of Citrus maxima has a strong potential for environmental friendly synthesis of silver nanoparticles.

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Synthesis of stable nanosilver particles (AgNPs) by the proteins of seagrass Syringodium isoetifolium and its biomedicinal properties

Cited by 46 publications

References 52 publications

Antimicrobial effect of silver nanoparticles (AgNPs) and their mechanism – a mini review

Antimicrobial effect of silver nanoparticles (AgNPs) and their mechanism – a mini review

Dispersibility and Size Control of Silver Nanoparticles with Anti-Algal Potential Based on Coupling Effects of Polyvinylpyrrolidone and Sodium Tripolyphosphate

Synthesis and Characterization of Silver Nanoparticles using Aqueous Extract of Citrus maxima Leaf

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