Green Synthesis of Silver Nanoparticles from Caralluma tuberculata Extract and its Antibacterial Activity

Zarei, Zahra; Razmjoue, Damoun; Karimi, Javad

doi:10.1007/s10904-020-01586-7

Cited by 33 publications

(19 citation statements)

References 39 publications

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“…The structure and crystallite phase of LIV-AgNPs annealed at 60 °C was obtained by X-ray diffraction (XRD) at 2θ degree scale in the range between 20 and 80° ( Figure 6 ). The main peaks (111), (200), (220) and (311) were observed at 38.3°, 46.2°, 64.5° and 78.2° respectively, suggest that as-prepared LIV-AgNPs are crystalline in nature [ 28 , 29 ]. In addition, the three peaks at 28° (105) and 57° (309), and 32.5° (420) indicated some traces of hexagonal Ag 2 O and orthorhombic Ag 2 O 3 NPs, respectively [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the three peaks at 28° (105) and 57° (309), and 32.5° (420) indicated some traces of hexagonal Ag 2 O and orthorhombic Ag 2 O 3 NPs, respectively [ 30 ]. Besides, the XRD also demonstrated feeble and broad reflections as noise, which might be due to the presence of bioorganic compounds on the surface of AgNPs [ 29 ]. The average particle size of LIV-AgNPs was estimated to be 8.53 nm, based on full-width-at-half-maximum (FWHM) value for (111) plane of reflection.…”

Section: Resultsmentioning

confidence: 99%

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Biofabricated Fatty Acids-Capped Silver Nanoparticles as Potential Antibacterial, Antifungal, Antibiofilm and Anticancer Agents

et al. 2021

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The current study demonstrates the synthesis of fatty acids (FAs) capped silver nanoparticles (AgNPs) using aqueous poly-herbal drug Liv52 extract (PLE) as a reducing, dispersing and stabilizing agent. The NPs were characterized by various techniques and used to investigate their potent antibacterial, antibiofilm, antifungal and anticancer activities. GC-MS analysis of PLE shows a total of 37 peaks for a variety of bio-actives compounds. Amongst them, n-hexadecanoic acid (21.95%), linoleic acid (20.45%), oleic acid (18.01%) and stearic acid (13.99%) were found predominately and most likely acted as reducing, stabilizing and encapsulation FAs in LIV-AgNPs formation. FTIR analysis of LIV-AgNPs shows some other functional bio-actives like proteins, sugars and alkenes in the soft PLE corona. The zone of inhibition was 10.0 ± 2.2–18.5 ± 1.0 mm, 10.5 ± 2.5–22.5 ± 1.5 mm and 13.7 ± 1.0–16.5 ± 1.2 against P. aeruginosa, S. aureus and C. albicans, respectively. LIV-AgNPs inhibit biofilm formation in a dose-dependent manner i.e., 54.4% ± 3.1%—10.12% ± 2.3% (S. aureus), 72.7% ± 2.2%–23.3% ± 5.2% (P. aeruginosa) and 85.4% ± 3.3%–25.6% ± 2.2% (C. albicans), and SEM analysis of treated planktonic cells and their biofilm biomass validated the fitness of LIV-AgNPs in future nanoantibiotics. In addition, as prepared FAs rich PLE capped AgNPs have also exhibited significant (p < 0.05 *) antiproliferative activity against cultured HCT-116 cells. Overall, this is a very first demonstration on employment of FAs rich PLE for the synthesis of highly dispersible, stable and uniform sized AgNPs and their antibacterial, antifungal, antibiofilm and anticancer efficacy.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Biofabricated Fatty Acids-Capped Silver Nanoparticles as Potential Antibacterial, Antifungal, Antibiofilm and Anticancer Agents

et al. 2021

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“…Additionally, the functional groups, e.g., -C=C- and -C=O, present in phytochemicals can also contribute to the production of nanoparticles [ 36 ]. Moreover, green methods designate an environmentally friendly production of nanoparticles of different sizes and shapes [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver Nanoparticles and Their Applications in Harvesting Sunlight for Solar Thermal Generation

et al. 2021

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Silver (Ag) nanoparticles (NPs) have been synthesized through an easy, inexpensive, and ecofriendly method. Petroselinum crispum, parsley, leaf extract was utilized as a reducing, capping, and stabilizing agent, without using any hazardous chemical materials, for producing Ag NPs. The biosynthesized Ag NPs were characterized using different characterization techniques, namely UV-Vis, FT-IR spectroscopy, X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), dynamic light scattering (DLS), zeta potential, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), transmission electron microscope (TEM), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray (EDX) analysis to investigate the optical, thermal, structural, morphological, and chemical properties of the plant extract and the biosynthesized Ag NPs. After that, the biosynthesized Ag NPs were utilized in harvesting sunlight for solar thermal generation. Surface plasmon resonance (SPR) for the green synthesized Ag NPs with the dark color were adjusted at nearly 450 nm. Once the Ag NPs are excited at the SPR, a large amount of heat is released, which causes a change in the local refractive index surrounding the Ag NPs. The released heat from the Ag NPs under the solar irradiation at the precise wavelength of plasmon resonance significantly increased the temperature of the aqueous medium. Different percentages of Ag NPs were dispersed in water and then exposed to the sunlight to monitor the temperature of the suspension. It was found that the temperature of the aqueous medium reached its highest point when 0.3 wt. % of Ag NPs was utilized. This investigation is rare and unique, and it shows that utilizing a small amount of the biosynthesized Ag NPs can increase the temperature of the aqueous medium remarkably.

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“…The cell wall of gram negative bacteria is thin as compared to the cell wall of gram positive bacteria, so capacity of titanium ions to penetrate inside the gram negative bacteria is greater than that of gram positive bacteria. Also oxygen released on the surface of TiO 2 NPs react with water/moisture resulting in the formation of hydrogen peroxide which penetrate inside and kill these pathogens (Shah et al, 2019; Zarei, Razmjoue, & Karimi, 2020).…”

Section: Resultsmentioning

confidence: 99%

Structural and biological investigation of biogenically synthesized titanium dioxide nanoparticles: Calcination and characterization

Hafeez

Shamim

Ehsan

et al. 2021

Microscopy Res & Technique

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The antimicrobial drug resistance is increasing with the passage of time due to wide and improper use of broad spectrum drugs and the demand of the new drug increases day by day. The present study was planned to encounter this problem by synthesizing titanium dioxide nanoparticles (TiO2 NPs) by an eco‐friendly route using Cannabis sativa leaves extract. The synthesized TiO2 NPs were calcined at 100, 300, 600, and 900°C in a muffle furnace. The crystallographic parameters were studied by X‐ray diffraction and the phase transition occurred above 600°C. The surface morphology of the synthesized samples was studied by transmission electron microscopy (TEM), and scanning electron microscopy (SEM) and the particle size was measured through the ImageJ software. The elemental composition and purity of all the samples were studied by performing energy dispersive X‐ray (EDX). All the synthesized TiO2 NPs were tested for their antimicrobial effect against Gram‐positive and Gram‐negative bacteria using the agar well diffusion method. The activity was found higher against Gram‐negative bacteria and compared to Gram‐positive bacteria.

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Green Synthesis of Silver Nanoparticles from Caralluma tuberculata Extract and its Antibacterial Activity

Cited by 33 publications

References 39 publications

Biofabricated Fatty Acids-Capped Silver Nanoparticles as Potential Antibacterial, Antifungal, Antibiofilm and Anticancer Agents

Biofabricated Fatty Acids-Capped Silver Nanoparticles as Potential Antibacterial, Antifungal, Antibiofilm and Anticancer Agents

Biosynthesis of Silver Nanoparticles and Their Applications in Harvesting Sunlight for Solar Thermal Generation

Structural and biological investigation of biogenically synthesized titanium dioxide nanoparticles: Calcination and characterization

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