&lt;i&gt;Bacillus licheniformis&lt;/i&gt; (MN900686) Mediated Synthesis, Characterization and Antimicrobial Potential of Silver Nanoparticles

Tufail, Shahzad; Liaqat, Iram; Ali, Sikander; Ulfat, Mobina; Shafi, Ayesha; Sadiqa, Ayesha; Iqbal, Riffat; Ahsan, Fatima

doi:10.5650/jos.ess21441

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…The control color did not alter. This result was consistent with those reported for a number of Bacillus species, including B. subtilis [ 46 ], B. licheniformis [ 47 ], B. cereus [ 48 ], and B. thuringiensis [ 49 ]. Liu et al [ 50 ] showed that they synthesized AgNPs by using Lysinibacillus sphaericus after 24 h. On the other hand, Nallal et al [ 51 ] succeeded in the biosynthesis of AgNPs by using 1 mM of silver nitrate mixed with an A. ampeloprasum bulb extract within 20 min.…”

Section: Resultssupporting

confidence: 92%

Antifungal Activity of Biosynthesized Silver Nanoparticles (AgNPs) against Aspergilli Causing Aspergillosis: Ultrastructure Study

Hashem

Saied

Amin

et al. 2022

JFB

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Currently, nanoparticles and nanomaterials are widely used for biomedical applications. In the present study, silver nanoparticles (AgNPs) were successfully biosynthesized using a cell-free extract (CFE) of Bacillus thuringiensis MAE 6 through a green and ecofriendly method. The size of the biosynthesized AgNPs was 32.7 nm, and their crystalline nature was confirmed by XRD, according to characterization results. A surface plasmon resonance spectrum of AgNPs was obtained at 420 nm. Nanoparticles were further characterized using DLS and FTIR analyses, which provided information on their size, stability, and functional groups. AgNPs revealed less cytotoxicity against normal Vero cell line [IC50 = 155 μg/mL]. Moreover, the biosynthesized AgNPs exhibited promising antifungal activity against four most common Aspergillus, including Aspergillus niger, A. terreus, A. flavus, and A. fumigatus at concentrations of 500 μg/mL where inhibition zones were 16, 20, 26, and 19 mm, respectively. In addition, MICs of AgNPs against A. niger, A. terreus, A. flavus, and A. fumigatus were 125, 62.5, 15.62, and 62.5 μg/mL, respectively. Furthermore, the ultrastructural study confirmed the antifungal effect of AgNPs, where the cell wall’s integrity and homogeneity were lost; the cell membrane had separated from the cell wall and had intruded into the cytoplasm. In conclusion, the biosynthesized AgNPs using a CFE of B. thuringiensis can be used as a promising antifungal agent against Aspergillus species causing Aspergillosis.

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Section: Resultssupporting

confidence: 92%

Antifungal Activity of Biosynthesized Silver Nanoparticles (AgNPs) against Aspergilli Causing Aspergillosis: Ultrastructure Study

Hashem

Saied

Amin

et al. 2022

JFB

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“…Intensive bands at 1602 and 1616 cm −1 were observed in the FTIR spectra of SVE and FUE, respectively. This broad band in the 1600 and 1700 cm −1 region could be attributed to the C=C stretching vibration of aromatic rings, as well as the C=O group of amides, esters, or C=O group on the C ring of flavones [ 28 , 29 , 30 , 31 ]. These intensive bands were also noticed at similar positions in the SVAgNP and the FUAgNP FTIR spectra (1623 and 1605 cm −1 , respectively), but attenuated.…”

Section: Resultsmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticles Using Salvia verticillata and Filipendula ulmaria Extracts: Optimization of Synthesis, Biological Activities, and Catalytic Properties

et al. 2023

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The study’s objective was to obtain silver nanoparticles (SVAgNP and FUAgNP) using aqueous extracts of Salvia verticillata and Filipendula ulmaria. The optimal conditions for nanoparticle synthesis were determined and obtained; nanoparticles were then characterized using UV-Vis, Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Dynamic Light Scattering (DLS), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS). SVAgNP and FUAgNP possessed a crystalline structure with 48.42% and 60.41% silver weight, respectively. The highest percentage of nanoparticles in the solution had a diameter between 40 and 70 nm. In DPPH˙ and ABTS˙+ methods, FUAgNP (IC50 15.82 and 59.85 µg/mL, respectively) demonstrated a higher antioxidant capacity than SVAgNP (IC50 73.47 and 79.49 µg/mL, respectively). Obtained nanoparticles also showed pronounced antibacterial activity (MIC ˂ 39.1 µg/mL for most of the tested bacteria), as well as high biocompatibility with the human fibroblast cell line MRC-5 and significant cytotoxicity on some cancer cell lines, especially on the human colon cancer HCT-116 cells (IC50 31.50 and 66.51 µg/mL for SVAgNP and FUAgNP, respectively). The nanoparticles demonstrated high catalytic effectiveness in degrading Congo red dye with NaBH4. The results showed a rapid and low-cost methodology for the synthesis of AgNPs using S. verticillata and F. ulmaria with promising biological potential.

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“…Nanoparticles (NPs) have remarkable properties that make them useful in fields of medicine, agriculture, environment, and energy 31) . It was observed that NPs are more efficient against bacteria and fungi as compared to antibiotics and antifungal drugs.…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial Efficacy of Biogenic Cobalt and Copper Nanoparticles against Pathogenic Isolates

Liaqat¹,

Ali²,

Hanif³

et al. 2022

J. Oleo Sci.

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IntroductionBiological systems have evolved as a revolutionary technology for synthesizing nanoparticles (NPs) in recent years. Synthesis of NPs expanded greatly in the past few decades by manipulating their properties which makes the research area to grow bigger 1) . With 1-100 nm NPs size, they are utilized in medical industries, catalysis, electro-chemistry biosensors, water treatment, and trace substance detection 2) . They are synthesized by using chemical, physical and biological methods. Depending upon the external environment, NPs may be hollow, spherical, cylindrical, flat and

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<i>Bacillus licheniformis</i> (MN900686) Mediated Synthesis, Characterization and Antimicrobial Potential of Silver Nanoparticles

Cited by 8 publications

References 33 publications

Antifungal Activity of Biosynthesized Silver Nanoparticles (AgNPs) against Aspergilli Causing Aspergillosis: Ultrastructure Study

Antifungal Activity of Biosynthesized Silver Nanoparticles (AgNPs) against Aspergilli Causing Aspergillosis: Ultrastructure Study

Green Synthesis of Silver Nanoparticles Using Salvia verticillata and Filipendula ulmaria Extracts: Optimization of Synthesis, Biological Activities, and Catalytic Properties

Antimicrobial Efficacy of Biogenic Cobalt and Copper Nanoparticles against Pathogenic Isolates

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