Nano silver particle synthesis using Swertia paniculata herbal extract and its antimicrobial activity

Ahluwalia, Vivek; Elumalai, Sasikumar; Kumar, Vinod; Kumar, Sandeep; Sangwan, Rajender S.

doi:10.1016/j.micpath.2017.11.052

Cited by 112 publications

(48 citation statements)

References 44 publications

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“…From the XRD pattern, we can analyze the crystalline nature of the synthesized AgNPs using casein nanoparticles. Data were collected in the range of 10°–50° , diffraction peaks obtained at 2θ were 38.55 and 44.4° (Figure c) which were almost consistent with the findings of Ahluwalia, Elumalai, Kumar, Kumar, and Sangwan (). These peaks are assigned to (111) and (200) planes of a face‐centered cubic (fcc) lattice of silver.…”

Section: Resultssupporting

confidence: 85%

Casein and Ag nanoparticles: Synthesis, characterization, and their application in biopolymer‐based bilayer film

Bora

Mishra

2019

J Food Process Preserv

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In the present investigation, casein nanoparticles and silver nanoparticles (AgNPs) were synthesized separately and the synthesized nanoparticles were incorporated into the bilayer film. Casein nanoparticles were produced using desolvation techniques, whereas AgNPs were synthesized using casein protein. The synthesized nanoparticles were characterized by scanning electron microscope (SEM), field emission electron microscope (FESEM), and UV–Visible spectra. UV spectra and SEM revealed that the pH had a significant effect on the size of both casein nanoparticles and AgNPs. AgNPs, synthesized at pH 13, were spherical in shape with average particle size of 10–25 nm and were stable up to 80 days. All the synthesized AgNPs showed 7–14 mm of zone of inhibition against growth of Escherichia coli. Incorporation of AgNPs and casein nanoparticles into sodium alginate/casein bilayer film improved the oxidative stability of packed almond oil during storage. Peroxide value of oil was increased from 8.02 meq/kg to 11.5 meq/kg only when stored in nanoparticles containing biopolymer film. Practical applications Edible film is a better alternative of plastic materials, but poor shelf life and mechanical properties of the film restrict the application of edible films in food Industries. Incorporation of antibacterial agent can improve the shelf life of biodegradable film. So, in present investigation, casein nanoparticles and AgNPs were synthesized separately. Casein nanoparticles were produced using desolvation techniques, whereas AgNPs were synthesized through mediation of casein protein. Synthesized nanoparticles were characterized by SEM, FESEM, and UV–Visible spectra. The synthesized nanoparticles were incorporated into pectin–sodium alginate/casein bilayer film. Incorporation of AgNPs and casein nanoparticles in bilayer improved the oxidative stability of almond oil during storage.

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Section: Resultssupporting

confidence: 85%

Casein and Ag nanoparticles: Synthesis, characterization, and their application in biopolymer‐based bilayer film

Bora

Mishra

2019

J Food Process Preserv

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“…To our knowledge, this is the first study of the biogenic synthesis of AgNPs using an extract of the Aloe species A. fleurentiniorum. Synthesis of NPs, including AgNPs, using plant extracts has advantages, including safety, simplicity, absence of organic solvents, and low-cost (3,19,20). In the present study, an immediate color change of the plant extract-AgNO 3 mixture to dark brown, which reflected the reduction of Ag + to Ag 0 , was evident.…”

Section: Resultssupporting

confidence: 48%

“…Nanoparticles are particles with a diameter of less than 100 nanometers. Nanoparticles (NPs), including silver nanoparticles (AgNPs), have diverse potential applications in the biotechnology, biomedical, and agriculture sectors as components of packaging and coating materials, food storage materials, optical and electronic materials, cleaning agents, besides other applications (1)(2)(3).…”

Section: Introductionmentioning

confidence: 99%

Silver nanoparticles synthesized biogenically fromAloe fleurentiniorumextract: characterization and antibacterial activity

Salmen

Alharbi

2020

Green Chemistry Letters and Reviews

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The biogenic synthesis of silver nanoparticles (AgNPs) using Aloe fleurentiniorum extract and antibacterial activity of the synthesized AgNPs were investigated. Examinations using ultravioletvisible spectrophotometry, fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy confirmed the efficacy of AgNP biosynthesis using A. fleurentiniorum extract. Purely prepared AgNPs were spherical and moderately sized. The antibacterial activity of AgNPs was evaluated through the agar well diffusion assay using Staphylococcus aureus, methicillin-resistant S. aureus, Escherichia coli, and Salmonella typhimurium. The biosynthesized AgNPs consistently displayed strong antibacterial activity.

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“…Long before the pharmaceutical antibiotic revolution, silver has been used as antibacterial over a broad range of microorganisms [19][20][21][22][23] as silver ions are highly disruptive to bacterial integrity [24]. Bulk silver has been reported as an e ective bactericide by many research studies [25,26]; however, to boost the performance, nanotechnology could help by reducing bulk silver to the nano-scale [27][28][29][30][31]. Furthermore, AgNPs have recently attracted attention due to their antiviral e ects against hepatitis B type virus and human immune de ciency virus (HIV-1) [32].…”

Section: Introductionmentioning

confidence: 99%

Biogenic AgNPs—A Nano Weapon against Bacterial Canker of Tomato (BCT)

Noshad

Iqbal

Hetherington

et al. 2020

Advances in Agriculture

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Bacterial canker of tomato caused by the bacterial pathogen Clavibacter michiganensis subsp. michiganensis (Cmm) is a major limiting factor for tomato production worldwide. Currently there exists no resistant variety of tomato to bacterial canker; only cultural and chemical controls are available. This study synthesized AgNPs (silver nanoparticles) via a green chemistry route and investigated their bactericidal potential against bacterial canker of tomato (BCT). AgNPs were prepared using mycellial aqueous extract of agriculturally beneficial fungi Pythium oligandrum. The formation of AgNPs was confirmed by using UV–Vis spectroscopy for the absorbance pattern while their morphology was investigated by the transmission electron microscopy (TEM). The X-ray diffraction profile for the biogenic AgNPs confirmed a crystalline structure with an average particle size of 12 nm. AgNPs treated seeds showed a normal germination rate with normal seedling growth. An in-vitro study found that the prepared AgNPs caused the maximum inhibition of the bacterial pathogen. In the greenhouse the introduction of AgNPs significantly prevents and inhibits the bacterial pathogen Cmm on tomato plants. These results suggest that this process is a strong candidate for industrial scale production of AgNPs. These particles act as an inhibitor and broad spectrum antibacterial agent against cmm, and hence offer a new and eco-friendly alternative in BCT control.

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Nano silver particle synthesis using Swertia paniculata herbal extract and its antimicrobial activity

Cited by 112 publications

References 44 publications

Casein and Ag nanoparticles: Synthesis, characterization, and their application in biopolymer‐based bilayer film

Casein and Ag nanoparticles: Synthesis, characterization, and their application in biopolymer‐based bilayer film

Silver nanoparticles synthesized biogenically fromAloe fleurentiniorumextract: characterization and antibacterial activity

Biogenic AgNPs—A Nano Weapon against Bacterial Canker of Tomato (BCT)

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