Caesalpinia coriaria leaf extracts mediated biosynthesis of metallic silver nanoparticles and their antibacterial activity against clinically isolated pathogens

Jeeva, Kannan; Thiyagarajan, M.; Vellaichamy, Elangovan; Geetha, N.; Venkatachalam, P.

doi:10.1016/j.indcrop.2013.11.037

Cited by 236 publications

(121 citation statements)

References 36 publications

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“…Unpredicted crystalline structures (32.25°and 46.21°) are also present and might be due to the organic compounds in the leaf extract (Suvith and Philip 2014;Duraisamy et al 2013). A similar result was observed by Kumar and Yadav (2009) and Jeeva et al (2014b), who identified crystalline peaks (32.28°, 46.28°, 54.83°, 67.47°and 76.69°) which were also obvious in a lot of works in which the XRD pattern included the relevant 2°r ange. Appearances of these peaks are due to the presence of phytochemical compounds in the leaf extracts.…”

Section: Xrd Studiessupporting

confidence: 84%

“…The strong bands at 1074 cm -1 are due to ether linkages and suggest the presence of flavanones adsorbed on the surface of metal nanoparticles (Shankar et al 2004). The phenolic groups participating in ion replacement response are placed in the 1315-1037 and 1456-1600 cm -1 regions for the plant extract (Jeeva et al 2014b). The very strong band at 1592 cm -1 is due to C=C stretching in the aromatic ring, confirming the presence of the aromatic group .…”

Section: Ftir Analysis Of Agnpsmentioning

confidence: 99%

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Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

2015

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In this paper, an aqueous extract of fresh leaves of Pedalium murex was used for the synthesis of silver (Ag) nanoparticles. Different biological methods are gaining recognition for the production of silver nanoparticles (AgNPs) due to their multiple applications. The use of plants in the green synthesis of nanoparticles emerges as a cost-effective and eco-friendly approach. Characterization of nanoparticles was done using different methods, which include; ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR), powder X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), energy dispersive X-ray analysis (EDAX), fluorescence emission spectroscopy, transmission electron microscope (TEM), dynamic light scattering (DLS), zeta potential and antibacterial activity. UV-visible spectrum of the aqueous medium containing silver nanoparticles showed absorption peak at around 430 nm. Fourier transform infrared spectra had shown that the biomolecule compounds were responsible for the reduction and capping material of silver nanoparticles. XRD study showed the particles to be crystalline in nature, with a face-centered cubic (fcc) structure. The size and stability were detected using DLS and zeta potential analysis. The antibacterial activity of AgNPs against generally found bacteria was assessed to find their potential use in silver-containing antibacterial product.

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Section: Xrd Studiessupporting

confidence: 84%

Section: Ftir Analysis Of Agnpsmentioning

confidence: 99%

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

2015

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“…37 Moreover, they are increasingly being used in antimicrobial agents for augmentation of their potencies. [23][24][25]38,39 AgNPs are widely being used and examined in areas such as biosensing, photonics (as spectrally selective coatings for solar energy absorption), electronics (as an intercalation material for electrical batteries), antimicrobial application, and are also used as potential optical receptors for biolabeling. [40][41][42] The main aim of this study was to synthesize AgNPs using aqueous leaves extract of Rosa damascena as bioreducing agent to reduce Ag + to Ag 0 , which were later analyzed and characterized by using ultraviolet-visible (UV-Vis) spectroscopy, fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), dynamic light scattering (DLS), and field emission scanning electron microscopy (FESEM).…”

Section: Ahmad Et Almentioning

confidence: 99%

Phytofabrication of bioinduced silver nanoparticles for biomedical applications

Ahmad¹,

Bhatnagar²,

Ali³

et al. 2015

IJN

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Synthesis of nanomaterials holds infinite possibilities as nanotechnology is revolutionizing the field of medicine by its myriad applications. Green synthesis of nanoparticles has become the need of the hour because of its eco-friendly, nontoxic, and economic nature. In this study, leaf extract of Rosa damascena was used as a bioreductant to reduce silver nitrate, leading to synthesis of silver nanoparticles (AgNPs) in a single step, without the use of any additional reducing or capping agents. The synthesized nanoparticles were characterized by the use of UV-visible spectroscopy, fourier transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy, and field emission scanning electron microscopy. Time-dependent synthesis of AgNPs was studied spectrophotometrically. Synthesized AgNPs were found to possess flower-like spherical structure where individual nanoparticles were of 16 nm in diameter, whereas the agglomerated AgNPs were in the range of 60–80 nm. These biologically synthesized AgNPs exhibited significant antibacterial activity against Gram-negative bacterial species but not against Gram-positive ones ( Escherichia coli and Bacillus cereus ). Anti-inflammatory and analgesic activities were studied on a Wistar rat model to gauge the impact of AgNPs for a probable role in these applications. AgNPs tested positive for both these activities, although the potency was less as compared to the standard drugs.

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“…Metallic silver nanocrystal usually showed strong absorption spectra in the range of 2.5-4.0 keV, and similar results were also reported earlier. [44][45][46][47] Possible mechanism involved in biosynthesis of agNPs…”

Section: Xrd Analysis Of Agnpsmentioning

confidence: 99%

Thidiazuron-enhanced biosynthesis and antimicrobial efficacy of silver nanoparticles via improving phytochemical reducing potential in callus culture of Linum usitatissimum L.

Anjum¹,

Abbasi²

2016

IJN

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Green synthesis of silver nanoparticles (AgNPs) by using plants is an emerging class of nanobiotechnology. It revolutionizes all domains of medical sciences by synthesizing chemical-free AgNPs for various biomedical applications. In this report, AgNPs were successfully synthesized by using whole plant extract (WPE) and thidiazuron-induced callus extract (CE) of Linum usitatissimum . The phytochemical analysis revealed that the total phenolic and flavonoid contents were higher in CE than that in WPE. Ultraviolet-visible spectroscopy of synthesized AgNPs showed a characteristic surface plasmon band in the range of 410–426 nm. Bioreduction of CE-mediated AgNPs was completed in a shorter time than that of WPE-mediated AgNPs. Scanning electron microscopy showed that both types of synthesized AgNPs were spherical in shape, but CE-mediated AgNPs were smaller in size (19–24 nm) and more scattered in distribution than that of WPE-mediated AgNPs (49–54 nm). X-ray diffraction analysis confirmed crystalline nature (face-centered cubic) of both types of AgNPs. Fourier-transform infrared spectroscopy revealed that the polyphenols and flavonoids were mainly responsible for reduction and capping of synthesized AgNPs. Energy dispersive X-ray analysis further confirmed the successful synthesis of AgNPs. Moreover, the synthesized AgNPs were found to be stable over months with no change in the surface plasmon bands. More importantly, CE-mediated AgNPs displayed significantly higher bactericidal activity against multiple drug-resistant human pathogens than WPE-mediated AgNPs. The present work highlighted the potent role of thidiazuron in in vitro-derived cultures for enhanced biosynthesis of chemical-free AgNPs, which can be used as nanomedicines in many biomedical applications.

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Caesalpinia coriaria leaf extracts mediated biosynthesis of metallic silver nanoparticles and their antibacterial activity against clinically isolated pathogens

Cited by 236 publications

References 36 publications

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

Phytofabrication of bioinduced silver nanoparticles for biomedical applications

Thidiazuron-enhanced biosynthesis and antimicrobial efficacy of silver nanoparticles via improving phytochemical reducing potential in callus culture of Linum usitatissimum L.

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