Environmental-friendly Method for Synthesis of Silver Nanoparticles from Dragon Fruit Peel Extract and their Antibacterial Activities

Phongtongpasuk, Siriporn; Poadang, Sarinya; Yongvanich, Niti

doi:10.1016/j.egypro.2016.05.031

Cited by 85 publications

(37 citation statements)

References 18 publications

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“…Due to the interaction with nanoparticles, the enzymes in the bacteria are deactivated, generating a hydrogen peroxide that eventually leads to microbial cell death [37]. However, similar nanoparticles were prepared with dragon fruit peel extract and were tested for microcidal activity against the same bacterial strains as the ones we obtained; however, it was found that Ag NPs prepared by the dragon fruit peel extract yielded a zone of inhibition of 9 mm, while the Ag NPs reported in this study yielded a significantly higher zone of inhibition i.e., 22 nm [38]. Furthermore, the minimum inhibitory concentration (MIC) value of biosynthesized ZM-AgNPs was calculated and the bacterial strains S. aureus and E. coli were selected for this study.…”

Section: Antimicrobial Propertiesmentioning

confidence: 53%

Study of Antibacterial Properties of Ziziphus mauritiana based Green Synthesized Silver Nanoparticles against Various Bacterial Strains

Asimuddin¹,

Shaik

Fathima³

et al. 2020

Sustainability

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Due to their low cost and environmentally friendly nature, plant extracts based methods have gained significant popularity among researchers for the synthesis of metallic nanoparticles. Herein, green synthesis of silver nanoparticles was performed using the aqueous solution of Ziziphus mauritiana leaves extract (ZM-LE) as a bio-reducing agent. The as-obtained silver nanoparticles were characterized by using UV-Vis spectroscopy, XRD (X-ray diffraction), TEM (transmission electron microscopy), and FT-IR (Fourier-transform infrared spectroscopy). In addition, the effects of the concentrations of the leaves extract, silver nitrate, and the temperature on the preparation of nanoparticles were also investigated. In order to determine the nature of secondary metabolites present in leaves extract, a preliminary investigation of phytoconstituents was carried out using different methods including Folin-Ciocalteu and AlCl 3 methods. The results have indicated the presence of a considerable amount of phenolic and flavonoid contents in the leaves extract, which are believed to be responsible for the reduction of silver ions and stabilization of resulting nanoparticles. Indeed, the FT-IR spectrum of silver nanoparticles also confirmed the presence of residual phytomolecules of leaves extract as stabilizing ligands on the surface of nanoparticles. The antibacterial properties of as-obtained silver nanoparticles were tested against various bacterial strains including Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Bacillus subtilis. The nanoparticles strongly inhibited the growth of S. aureus with a minimum inhibitory concentration (MIC) of 2.5 µg/ml and moderately inhibited the growth of E. coli with a MIC of 5 µg/ml.

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Section: Antimicrobial Propertiesmentioning

confidence: 53%

Study of Antibacterial Properties of Ziziphus mauritiana based Green Synthesized Silver Nanoparticles against Various Bacterial Strains

Asimuddin¹,

Shaik

Fathima³

et al. 2020

Sustainability

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“…(a)), indicating that the pigment contributed to reduction of Au 3+ ions and stabilization of the formed Au NPs . Djulis contains a large amount of betanin and can serve as a reducing and stabilizing agent for the synthesis of Au NPs . The proposed mechanism of Au 3+ conversion into Au NPs is shown in Fig.…”

Section: Resultsmentioning

confidence: 98%

“…Previous studies have reported that the betanin was oxidized to 2‐decarboxy‐2,3‐dehydrobetanin mainly . It was reported that the principal reason of stability on the surface of Au NPs was the electrostatic repulsion force of negatively charged betanin . Furthermore, the ionization of the surface functional groups (carboxylic and amino) was able to stabilize the formed Au NPs and prevent their agglomeration …”

Section: Resultsmentioning

confidence: 99%

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Green biosynthesis of gold nanoparticles using Chenopodium formosanum shell extract and analysis of the particles' antibacterial properties

et al. 2019

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BACKGROUND Various physical and chemical methods for synthesis of metal nanoparticles have had some drawbacks. Therefore, green synthesis of gold nanoparticles (Au NPs) has became one of the most crucial emerging areas of nanobiotechnology. In the present study, plant‐mediated synthesis of Au NPs was performed using Djulis (Chenopodium formosanum) shell extract as a reducing and stabilizing agent. RESULTS Reaction parameters were manipulated to optimize the Au NPs using a UV‐visible spectrophotometer. Optimized Au NPs with a surface plasmon resonance band at 533 nm were prepared using a 744 µg mL−1 extract and a solution of pH 2.62 chloroauric acid (HAuCl4·3H2O) at 40 °C. High‐resolution transmission electron microscopy (HR‐TEM) results indicated that most of the resultant Au NPs were spherical in shape and exhibited a mean size of 8 ± 6 nm. Energy‐dispersive X‐ray spectroscopy (EDS), and selected area electron diffraction (SAED), and X‐ray diffraction (XRD) confirmed the elemental gold and crystalline nature of the resultant NPs. FTIR spectrum analysis indicated the critical role of phenolic groups in the reduction of Au3+ ions and stabilization of the formed Au NPs. Moreover, the synthesized Au NPs possessed antibacterial activity for Escherichia coli and Staphylococcus aureus. CONCLUSION In this study, Au NPs were synthesized with high efficiency and stability using Djulis shell extract, and related antibacterial applications were demonstrated. © 2019 Society of Chemical Industry

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“…These methods however suffer from drawbacks such as the use of toxic chemicals, laborious reaction times and expensive equipment among others. Research has been swayed towards the use of green synthetic method that utilizes plant extracts to synthesize and stabilize colloidal silver nanoparticles in aqueous solution [8,14].…”

Section: Introductionmentioning

confidence: 99%

Phytochemical and Antimicrobial Studies of Colloidal Silver Nanoparticles Mediated by <i>Laportea aestuans</i> Extract

Bankole¹

2018

IJBECS

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This present report describes studies on the phytochemical screening and antimicrobial activity of colloidal silver nanoparticles (AgNPs) mediated by Laportea aestuans leaf extract in aqueous solution. Herein, AgNPs were facilely synthesized using the fresh leaf extract of Laportea aestuans in water. UV-Vis absorption spectrum of as-prepared AgNPs shows surface plasmon resonance (SPR) peak at ≈ 453 nm, suggesting successful formation of AgNPs. The X-ray diffraction pattern of the AgNPs were consistent with the Bragg's reflections of AgNPs. Transmission electron microscope revealed that the prepared AgNPs are monodisperse, slightly non-aggregated and quasi-spherical in shapes. Phytochemical screenings of the leaves of L. aestuans shows presence of important bio-organic molecules that are responsible for the reduction, growth and stabilization of as-prepared AgNPs in aqueous solution. Bactericidal effects of the as-prepared biosynthesized AgNPs were carried out against pathogenic Gram-negative (Pseudomonas aeruginosa and Salmonella typhi) and Gram-positive (Bacillus subtilis and Staphylococcus aureus) bacteria. Biosynthesized AgNPs showed enhanced antimicrobial activity against S. aureus (gram positive) and S. typhi (gram negative), compared to B. subtilis (gram positive) and P. aeruginosa (gram negative) at the tested concentrations. Impressive antimicrobial activity of L-Ag against the tested pathogens could be attributed to the synergistic effects of the biomolecules in the Laportea aestuans plants and silver nanostructures.

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Environmental-friendly Method for Synthesis of Silver Nanoparticles from Dragon Fruit Peel Extract and their Antibacterial Activities

Cited by 85 publications

References 18 publications

Study of Antibacterial Properties of Ziziphus mauritiana based Green Synthesized Silver Nanoparticles against Various Bacterial Strains

Study of Antibacterial Properties of Ziziphus mauritiana based Green Synthesized Silver Nanoparticles against Various Bacterial Strains

Green biosynthesis of gold nanoparticles using Chenopodium formosanum shell extract and analysis of the particles' antibacterial properties

Phytochemical and Antimicrobial Studies of Colloidal Silver Nanoparticles Mediated by <i>Laportea aestuans</i> Extract

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Environmental-friendly Method for Synthesis of Silver Nanoparticles from Dragon Fruit Peel Extract and their Antibacterial Activities

Cited by 85 publications

References 18 publications

Study of Antibacterial Properties of Ziziphus mauritiana based Green Synthesized Silver Nanoparticles against Various Bacterial Strains

Study of Antibacterial Properties of Ziziphus mauritiana based Green Synthesized Silver Nanoparticles against Various Bacterial Strains

Green biosynthesis of gold nanoparticles using Chenopodium formosanum shell extract and analysis of the particles' antibacterial properties

Phytochemical and Antimicrobial Studies of Colloidal Silver Nanoparticles Mediated by &lt;i&gt;Laportea aestuans&lt;/i&gt; Extract

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Phytochemical and Antimicrobial Studies of Colloidal Silver Nanoparticles Mediated by <i>Laportea aestuans</i> Extract