&lt;I&gt;Cicer arietinum&lt;/I&gt; Leaf Extract Mediated Synthesis of Silver Nanoparticles and Screening of Their Antimicrobial Activity

Agarwal, Ravi; Agrawal, Narendra Kumar; Singh, Ramvir

doi:10.1166/asem.2014.1474

Cited by 14 publications

(11 citation statements)

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“…Size and shape of TiO 2 NPs may play an important role in controlling the porosity of nanocomposite membranes; hence here synthesized TiO 2 NPs were characterized by TEM. The TiO 2 NPs were vacuum dried and re‐dispersed in acetone by ultra‐sonication, to ensure that there is no HCl present in the samples . Figure shows TEM image of TiO 2 NPs synthesized having spherical shape and particle size ranging from 15–20 nm.…”

Section: Resultsmentioning

confidence: 99%

Study of Bacterial Cell Colonization on Plasma Induced Bio‐Adoptable Polymer Nanocomposites Membranes

Agrawal

Agarwal

Kumar

et al. 2015

Macromolecular Symposia

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Summary: Polymers are receiving great interest for synthesis of biomedical devices but to use them for any biomedical application they must show biocompatibility. In this work we have enhanced bio-compatibility of Poly (methyl methacrylate) (PMMA) using TiO 2 nanoparticles (NPs) and plasma irradiation. Spherical shape, 15-20 nm TiO 2 NPs were synthesized using wet chemical method and used to prepare polymer nano-composite (PNC) membranes of 20 micron via solution casting method. Further these membranes were irradiated by low temperature glow discharge Oxygen (O 2 ) ion plasma. Surface modifications produced by nanoparticle mixing and plasma irradiation were characterized by Optical Microscope, Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM). Results show increase in surface roughness and porosity thus changes surface energy and surface reactivity that helps to enhance selective bacterial growth on surface of the polymer nanocomposite membranes. The results are described in the paper.

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Section: Resultsmentioning

confidence: 99%

Study of Bacterial Cell Colonization on Plasma Induced Bio‐Adoptable Polymer Nanocomposites Membranes

Agrawal

Agarwal

Kumar

et al. 2015

Macromolecular Symposia

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“…Silver nanoparticles of C. arietinum showed antibacterial activity against E. coli. The activity was equal to the activity of standard drugs Rifampicin, Cefimex and Ampicillin 5 . Although, some of the plant extracts exhibited antibacterial activity against both Grampositive and Gram-negative bacteria, but the effect of the action is different.…”

Section: Fig 12: Zone Of Inhibition Of Different Extracts Of a Aspementioning

confidence: 97%

“…The FT-IR spectrum clearly shows the interactions of silver nanoparticles with the functional compounds present in the extract. The FT-IR analysis of C. arietinum particles revealed the presence of primary amines, carbonyl group ketone, aldehydes, and hydroxyl group carboxylic acids, alcohol and phenols as main compounds 5 . A. precatorius FTIR spectrum showed the interaction of the amide bond carbonyl proteins, alcohols and phenolic compounds with Ag nanoparticles 6 .…”

Section: Fig 12: Zone Of Inhibition Of Different Extracts Of a Aspementioning

confidence: 99%

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2020

IJPSR

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Green synthesis is one of the best routes for the silver nanoparticles (AgNPs). The present study revealed that the aqueous leaf extracts of Aeschynomene aspera, which contains alkaloids, flavonoids, phenols, terpenoids, anthocyanidins, indoles, glycosides, saponins and tannins, is found to be responsible for bioreduction during the synthesis of silver nanoparticles (SNPs). The colour change from light yellow to dark brown within 20 to 60 min indicates the formation of nanoparticles. The UV-Visible spectrum of the aqueous medium containing silver nanoparticles showed a Surface Plasmon Resonance peak at 450 nm. FT-IR analysis reveals that the phenols and amides are mainly responsible for reduction. XRD analysis clearly showed the characteristic Bragg peaks of (111), (200), (220), (311) facets of the face-entered cubic structure of silver nanoparticles and confirmed that these nanoparticles are crystalline in nature.HR-TEM analysis revealed that the green synthesized SNPs were spherical in shape with an average size of 10 nm. The antibacterial effect of synthesized AgNPs on different bacterial strains with the zone of inhibition 14.1 mm on Escherichia coli 12.2 mm on Pseudomonas aeruginosa, 11.3 mm on Staphylococcus aureus and 11.1 mm on Bacillus subtilis respectively. DPPH analysis shows that the nanoparticles possess 67.48 percent of antioxidant activity. The above results also correlated with the other species of Fabaceae such as, Abrus precatorius, Cicer arietinum, Callindra haematocephala Clitoria ternatea, and Pongamia pinnata both in their nanoparticles characteristics and also their antibacterial activity.

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“…There has also been a lot of research on silver nanoparticles in recent times. Silver nanoparticles were synthesized by several routes like chemical synthesis [11,12], green synthesis [13][14][15][16][17] and microorganism-mediated synthesis [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl pyrrolidone)-mediated synthesis of silver nanowires decorated with silver nanospheres and their antimicrobial activity

Priyadarshi

Negi

2019

Bull Mater Sci

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Pathogenic infectious diseases, like bacterial infections, are one of the most prevalent types of diseases all over the world. Although antibiotics are commonly used and widely available drugs for the treatment of bacterial infections, bacteria show multiple drug resistance, have a tendency to get genetically mutated and become resistant to commonly employed antibiotic drugs. This makes the invention of novel drugs essential. One of the possible approaches is the use of nanomaterials for this purpose. The present study attempts to synthesize silver nanospheres and silver nanowires and compare their antibacterial activity. Silver nanospheres were synthesized by chemical reduction of silver nitrate in the presence of a suitable stabilizer. For the synthesis of silver nanowires, polyol method was employed. Silver nanowires neatly decorated with silver nanospheres were obtained. The antibacterial activity was estimated by separately determining the minimum inhibition concentration of the two nanostructures on Gram-positive bacteria Bacillus subtilis and Gram-negative bacteria Escherichia coli cultured on Luria Bertani agar media. The comparison shows that the antibacterial activity of silver nanospheres is better than that of silver nanowires which is attributed to its higher surface area and the difference in uptake mechanism by the bacterial cells.

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<I>Cicer arietinum</I> Leaf Extract Mediated Synthesis of Silver Nanoparticles and Screening of Their Antimicrobial Activity

Cited by 14 publications

References 0 publications

Study of Bacterial Cell Colonization on Plasma Induced Bio‐Adoptable Polymer Nanocomposites Membranes

Study of Bacterial Cell Colonization on Plasma Induced Bio‐Adoptable Polymer Nanocomposites Membranes

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Poly(vinyl pyrrolidone)-mediated synthesis of silver nanowires decorated with silver nanospheres and their antimicrobial activity

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