Green synthesis of silver nanoparticles from purple acid phosphatase apoenzyme isolated from a new source<i>Limonia acidissima</i>

Pawar, Omkar; Deshpande, Neelima; Dagade, Sharda P.; Waghmode, Shobha; Joshi, Preeti Nigam

doi:10.1080/17458080.2015.1025300

Cited by 69 publications

(36 citation statements)

References 29 publications

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“…This was observed in the green synthesis of AgNPs by 16 different species of living plant systems [28]. Moreover, it was found in AgNPs developed from purple acid phosphatase apoenzyme isolated from Limonia acidissima [53]. Nanomaterials 2019, 9,1716 8 of 13 living plant systems [28].…”

Section: Xrd Analysis Of the Synthesized Nanoparticlesmentioning

confidence: 91%

“…FT-IR analysis was performed to identify possible interactions between synthesized AgNPs and plant bioactive molecules that may act as capping and stabilizing agents, as shown in Figure 7. The band around 3300 cm −1 could be due to N-H and O-H stretching [53]. The band around 1630 cm −1 might indicate C = O of amide I bond, and the bands at 1385 and 1030 cm −1 could match with C-N stretching vibrations of the aromatic and aliphatic amines, respectively [54].…”

Section: Encapsulation Of Agnps and T Apollinea Phytochemicalsmentioning

confidence: 97%

“…Nanomaterials 2019, 9, 1716 8 of 13 living plant systems [28]. Moreover, it was found in AgNPs developed from purple acid phosphatase apoenzyme isolated from Limonia acidissima [53].…”

Section: Encapsulation Of Agnps and T Apollinea Phytochemicalsmentioning

confidence: 99%

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Exogenous Production of Silver Nanoparticles by Tephrosia apollinea Living Plants under Drought Stress and Their Antimicrobial Activities

et al. 2019

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Nanoparticle (NP) synthesis by biological systems is more cost-effective, safe, and environmentally friendly when compared to currently used chemical and physical methods. Although many studies have utilized different plant extracts to synthesize NPs, few studies have incorporated living plants. In this study, silver nanoparticles (AgNPs) were synthesized exogenously by Tephrosia apollinea living plant system under the combined stresses of silver nitrate and different levels of drought stress simulated by Polyethylene glycol (PEG) (0, −0.1, −0.2, and −0.4 MPa for three and six days). Biomass, cell death, and H 2 O 2 content were evaluated to determine the toxicological effect of the treatments on the plant. More severe effects were detected in day 6 plants compared to day 3 plants, and at higher drought levels. UV-visible spectrum, energy dispersive X-ray spectroscopy, X-ray diffraction, scanning electron microscope, and Fourier transform infrared spectroscopy were used to detect and characterize the T. apollinea synthesized NPs. The shapes of the NPs were spherical and cubic with different phytochemicals being the possible capping agents. Broth microdilution was used to determine the antimicrobial activity of the NPs against Escherichia coli and Staphylococcus aureus. In this case, antimicrobial activity increased at higher PEG concentrations. Bactericidal effects were observed against E. coli, while only bacteriostatic effects were detected against S. aureus.

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Section: Xrd Analysis Of the Synthesized Nanoparticlesmentioning

confidence: 91%

Section: Encapsulation Of Agnps and T Apollinea Phytochemicalsmentioning

confidence: 97%

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Exogenous Production of Silver Nanoparticles by Tephrosia apollinea Living Plants under Drought Stress and Their Antimicrobial Activities

et al. 2019

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“…The eCon layers show no absorption behavior while the PeCon layers appear at a wide absorption peak at approximately 450 nm. These peaks could be associated with the plasmon resonance (PR) of the coated silver particles [44,45]. The PR can be influenced by different material parameters like size, shape, distance [46,47], composition of the nanostructures and the dielectric properties of the surrounding environment [48].…”

Section: Uv/vis Spectroscopymentioning

confidence: 99%

Wood Protection through Plasma Powder Deposition—An Alternative Coating Process

Kohler

Sauerbier

Ohms

et al. 2019

Forests

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In contrast to conventional coating processes such as varnishing, plasma powder deposition by means of an atmospheric pressure plasma jet on wood is not yet widely used. A key advantage of this process is that volatile organic compounds and organic solvents are avoided. In the present work, European beech (Fagus sylvatica L.) and pine sapwood (Pinus sylvestris L.) were coated with polymer (polyester), metal (aluminum coated silver) or metal oxide (bismuth oxide) particles. Furthermore, a layer system consisting of polyester and metal or metal oxide was investigated. The layer thickness and topography were analyzed with a laser scanning microscope and scanning electron microscope, revealing thicknesses of 2–22 µm depending on the coating material. In general, the chemical composition of the layers was determined using X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy measurements. The coatings consisting of metal and metal oxide showed a band gap and plasmon resonance in the range of 540 and 450 nm. Through this absorption, the wood may be protected against ultraviolet (UV) radiation. In the water uptake and release tests, the polyester layers exhibited a reduction of water vapor absorption after 24 h in 100% relative humidity (RH) by 53%–66%, whereas the pure metal oxide layers indicated the best desorption performance. The combination of metal oxide and polyester in the one-layer system combines the protection properties of the single coatings against water vapor and UV radiation.

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“…X-ray study demonstrated that NPs were made of silver and silver oxide. Asprepared NPs showed remarkably high antimicrobial activity against E. coli, P. aeruginosa and S. aureus [135] .…”

Section: Urak Urak Is a Fibrinolytic Enzyme Produced Bymentioning

confidence: 99%

An overview on the green synthesis of nanoparticles and other nano-materials using enzymes and their potential applications

2019

Biointerface Res Appl Chem

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The applications of nanoparticles (NPs) and another nanomaterial (NM) are widely increasing in various fields including biomedical and clinical sciences. Conventional methods used for the synthesis of NM have several demerits like chemical procedures producing toxic materials and physical methods being costly and forming particles of non-uniform sizes. The use of such NM has prevented their applications in biomedical fields especially in clinical applications. In order to use NPs in clinical fields, there is a need to use reliable, nontoxic and eco-friendly methods for their synthesis. The use of eco-friendly and biological methods for the synthesis of NPs and other NM has attracted the attention of nanobiotechnologists due to synthesis of such particles by using nontoxic method. The enzymatic synthesis of NPs is highly specific as this procedure results in the formation of nontoxic materials of controlled shape, size and high stability. In this chapter an effort has been made to critically review recent developments in the area of biosynthesis of several types of NM by using enzymes of diverse groups such as oxidoreductases, transferases, hydrolases, lyases and ligases. The mechanisms of enzyme catalyzedsynthesis of NPs and the reaction conditions to control their shape, size, and stability of NPs have also been described. Numerous kinds of techniques employed for the identification and characterization of NM have been discussed. The biomedical and other applications of as-synthesized NM have also been mentioned in this article.

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Green synthesis of silver nanoparticles from purple acid phosphatase apoenzyme isolated from a new sourceLimonia acidissima

Cited by 69 publications

References 29 publications

Exogenous Production of Silver Nanoparticles by Tephrosia apollinea Living Plants under Drought Stress and Their Antimicrobial Activities

Exogenous Production of Silver Nanoparticles by Tephrosia apollinea Living Plants under Drought Stress and Their Antimicrobial Activities

Wood Protection through Plasma Powder Deposition—An Alternative Coating Process

An overview on the green synthesis of nanoparticles and other nano-materials using enzymes and their potential applications

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