Synthesis and characterization of phytogenic zinc nanoparticles and their antimicrobial activity

Sindhura, K. Sri; Prasad, T. N. V. K. V.; Hussain, O. M.

doi:10.1109/icanmeet.2013.6609242

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…And the band present at 575.81 cm -1 indicates the presence of C-Br stretching vibration. From the FTIR spectra of B. ovalifoliolata bark extract and sample, change in wave number of the functional groups was observed due to the reduction and stabilization of metal group Zn (Sri Sindhura et al 2013). …”

Section: Ftir Analysismentioning

confidence: 99%

Synthesis, characterization, and evaluation of the antimicrobial efficacy of Boswellia ovalifoliolata stem bark-extract-mediated zinc oxide nanoparticles

et al. 2015

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Synthesis of metal nanoparticles using biological systems is an expanding research area in nanotechnology. Moreover, search for new nanoscale antimicrobials is been always attractive as they find numerous avenues for application in medicine. Biosynthesis of metallic nanoparticles is cost effective and eco-friendly compared to those of conventional methods of nanoparticles synthesis. Herein, we present the synthesis of zinc oxide nanoparticles using the stem bark extract of Boswellia ovalifoliolata, and evaluation of their antimicrobial efficacy. Stable ZnO nanoparticles were formed by treating 90 ml of 1 mM zinc nitrate aqueous solution with 10 ml of 10 % bark extract. The formation of B. ovalifoliolata barkextract-mediated zinc oxide nanoparticles (BZnNPs) was confirmed by UV-visible spectroscopic analysis and recorded the localized surface plasmon resonance (LSPR) at 230 nm. Fourier transform infrared spectroscopic (FT-IR) analysis revealed that primary and secondary amine groups in combination with the proteins present in the bark extract are responsible for the reduction and stabilization of the BZnNPs. The morphology and crystalline phase of the nanocrystals were determined by Transmission electron microscopy (TEM). The hydrodynamic diameter (20.3 nm) and a positive zeta potential (4.8 mV) were measured using the dynamic light scattering technique. The antimicrobial activity of BZnNPs was evaluated (in vitro) against fungi, Gram-negative, and Gram-positive bacteria using disk diffusion method which were isolated from the scales formed in drinking water PVC pipelines.

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Section: Ftir Analysismentioning

confidence: 99%

Synthesis, characterization, and evaluation of the antimicrobial efficacy of Boswellia ovalifoliolata stem bark-extract-mediated zinc oxide nanoparticles

et al. 2015

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“…The biological synthesis of NPs derived from the plant extracts of Justicia adhatoda L. and Parthenium hysterophorous has specific physicochemical properties [12,13]. The potential applications of plant extracts (as a reducing agent) for the biosynthesis of various metal nanostructures have convinced researchers to research the ability of different plants to produce valuable nanometals.…”

Section: Introductionmentioning

confidence: 99%

Toxicity of microwave-assisted biosynthesized zinc nanoparticles in mice: a preliminary study

Salimi

Rahimi

Forootanfar

et al. 2019

Artificial Cells, Nanomedicine, and Biotechnology

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This study was designed to describe the oral acute and subacute toxicities and underlying toxicological mechanisms of biogenic Zn NPs in mice. The Zn NPs were prepared by a green microwave-assisted synthesis method in the presence of Lavandula vera leaf extract. Determination of median lethal dose (LD 50) of Zn NPs and the subacute toxicity after 14 days of exposure was performed as a measurement of substance toxicity through general toxicological, hematological, serum, and histopathological investigations. The western blotting was used to determine the cleaved-caspase-3 expression in the sampled tissues. Flame atomic absorption spectrophotometer (AAS) was applied to estimate the Zn levels in tissues. The SEM analyses revealed that the biogenic Zn NPs were spherical-shaped with the size range of 30-80 nm. The LD 50 value above 5 g/kg indicated that biogenic Zn NPs could be classified as nontoxic chemicals. In subacute toxicity, no significant differences were found in the body weight as well as hematological and oxidative stress (OS) biomarkers after exposure to Zn NPs at the dose of 1 g/kg in comparison to the control. The AAS results indicated that Zn NPs were mainly distributed in the testis, liver, and brain. The findings of histology images of Zn NPs at the dose of 1 g/kg were similar to those of the control. Furthermore, no significant differences were observed in cleaved-caspase-3 expression after exposure to Zn NPs at the dose of 5 g/kg. The results demonstrated that changes in the OS were not related to caspase pathway and the no-observed-adverse-effect level (NOAEL) dose of biogenic Zn NPs in 14-days subacute toxicity study was lower than 1 g/kg.

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“…Various workers synthesized silver [8], gold [9,10], titanium dioxide [11], tungsten oxide [12], and copper oxide [13]. But the synthesis of biogenic zinc nanoparticles is scant [14,15]. Zn nanoparticles appear to be strongly resisted to bacteria and fungi.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Evaluation of the In-vitro Antimicrobial Efficacy of Cinnamomum Zeylanicum Bark-Extract- Mediated

Prasad¹

2017

RMES

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Cinnamomum zeylanicum have lot-of biological activities including antimicrobial, antioxidant and antifungal properties. Furthermore, cytotoxic and apoptotic activities of several constituents were identified throughout its biological properties. Bark of Cinnamomum zeylanicum (Lauraceae) collected respectively at Nanotechnology laboratory (ANGRAU, Tirupathi, India). In this study, microbiological aspects of scale formation in PVC pipelines bacteria and fungi were isolated. Stable Zn nanoparticles were formed by treating 90ml of 1mm zinc nitrate aqueous solution with 10ml of 10% bark extract. The formation of Cinnamomum zeylanicum bark extract mediated zinc nanoparticles (CZnNPs) was confirmed by UV-visible spectroscopic analysis and recorded the localized surface plasmon resonance (LSPR) at 270nm. Fourier transform infrared spectroscopic (FT-IR) analysis revealed that primary and secondary amine groups in combination with the proteins present in the bark extract are responsible for the reduction and stabilization of the CZnNPs. The morphology and crystalline phase of the nano crystals were determined by Transmission electron microscopy (TEM) and (XRD). The hydrodynamic diameter (20.3mm) and a positive zeta potential (10.4mV) were measured using the dynamic light scattering technique. The antimicrobial activity of CZnNPs was evaluated (in vitro) against fungi, Gram-negative and Gram-positive bacteria using disc diffusion method which were isolated from the scales formed in drinking water PVC pipelines. Research in Medical & Engineering Sciences 2/3Res Med Eng Sci evaluate the antimicrobial activity (Biofilm degradation in drinking water pipelines) of the aqueous extract towards pathogenic fungi and bacteria by in vitro disc diffusion method. Materials and Methods MaterialsZinc nitrate (& gt; 99% pure) was purchased from Sigma Aldrich, India. Potato dextrose broth, Potato dextrose agar, Nutrient broth, Nutrient agar plate, was supplied by Hi-media, India. Collection of biofilm formed in poly vinyl chloride (PVC) pipes The PVC Biofilm samples were collected from four different regions located in and around Tirupati, (Chittoor District) Andhra Pradesh, India. The samples were collected from drinking water PVC pipelines and taken in the sterile container. These samples were stored in an ice box and transported to the laboratory for microbiological characterization [18]. Collection of plant materialHealthy Cinnamomum zeylanicum stem barks were collected from Tirumala hills, Andhra Pradesh state, India. From the selected plant bark was collected by scrapping the trunk using neat and clean knife during the month of July 2014 and collected material was carefully washed and dried at 45 °C to constant weight. The dried bark of plant material were powdered, passed through a BSS no. 85-mesh sieve and stored in air tight container. Isolation of fungal and bacterial sp. from drinking water pipelineEight fungal species and ten bacterial samples were isolated from drinking water supply PVC pipelines in Tirupati, Chittoor...

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Synthesis and characterization of phytogenic zinc nanoparticles and their antimicrobial activity

Cited by 6 publications

References 7 publications

Synthesis, characterization, and evaluation of the antimicrobial efficacy of Boswellia ovalifoliolata stem bark-extract-mediated zinc oxide nanoparticles

Synthesis, characterization, and evaluation of the antimicrobial efficacy of Boswellia ovalifoliolata stem bark-extract-mediated zinc oxide nanoparticles

Toxicity of microwave-assisted biosynthesized zinc nanoparticles in mice: a preliminary study

Synthesis, Characterization, and Evaluation of the In-vitro Antimicrobial Efficacy of Cinnamomum Zeylanicum Bark-Extract- Mediated

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