Biosynthesis of Metal and Metal Oxide Nanoparticles Using Microbial Cultures: Mechanisms, Antimicrobial Activity and Applications to Cultural Heritage

Microorganisms, Journal Year: 2023, Volume and Issue: 11(2), P. 378 - 378

Published: Feb. 2, 2023

Nanoparticles (1 to 100 nm) have unique physical and chemical properties, which makes them suitable for application in a vast range of scientific technological fields. In particular, metal nanoparticle (MNPs) research has been showing promising antimicrobial activities, paving the way new applications. However, despite some into their potential, mechanisms are still not well determined. Nanoparticles' biosynthesis, using plant extracts or microorganisms, shown results as green alternatives synthesis; however, knowledge regarding behind it is neither abundant nor consensual. this review, findings from studies on biosynthesis MNPs were compiled evidence-based proposed. The first revealed importance enzymatic disturbance by internalized ions, while second illustrated role reducing negatively charged molecules. Additionally, main recent (2018-2022) microorganisms summarized analyzed, evidencing prevalence silver nanoparticles synthesized bacteria aiming toward testing potential. Finally, synopsis applied cultural heritage materials showed potential future use preservation.

Language: Английский

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Recent advances in nano-fertilizers: synthesis, crop yield impact, and economic analysis

Nanoscale, Journal Year: 2024, Volume and Issue: 16(9), P. 4484 - 4513

Published: Jan. 1, 2024

The escalating global demand for food production has predominantly relied on the extensive application of conventional fertilizers (CFs).

Language: Английский

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Green synthesis of magnesium nanoparticles mediated from Rosa floribunda charisma extract and its antioxidant, antiaging and antibiofilm activities

Scientific Reports, Journal Year: 2021, Volume and Issue: 11(1)

Published: Aug. 19, 2021

Abstract Flower based nanoparticles has gained a special attention as new sustainable eco-friendly avenue. Rosa floribunda charisma belongs to modern roses with bright yellow, red flowers marvellous rose scent. Different methods were used for the extraction of its floral scent such hexane, microwave, and solid-phase micro-extraction. The latter was most efficient method phenyl ethyl alcohol, unique roses. In current study, magnesium (RcNps) have been synthesized using petals that privileges beyond chemical physical routs. RcNps formation confirmed UV–Visible (UV–Vis) Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), High Resolution-Transmission Electron Microscope (HR-TEM), Field Emission-Scanning (FE-SEM), Energy dispersive X-ray (EDX), Diffractometer (XRD), photoelectron spectroscopy (XPS). HR-TEM images detected polyhedral shape diverse size ranged within 35.25–55.14 nm. resulting exhibited high radical scavenging activity illustrated by inhibition superoxide, nitric oxide, hydroxyl xanthine oxidase IC 50 values 26.2, 52.9, 31.9 15.9 µg/ml respectively compared ascorbic acid. Furthermore, at concentration 100 significantly reduced (15.9 ± 0.61 µg/ml) acid (12.80 0.32 p < 0.05. Moreover, showed an excellent antiaging demonstrated collagenase, elastase, hyaluronidase tyrosinase enzymes in dose-dependent manner 58.7 1.66 µg/ml, 82.5 2.93 191.4 5.68 158.6 5.20 EGCG respectively. also, promising antibacterial against three skin pathogens delineate significant threat public health, Staphylococcus epidermidis , Streptococcus pyogenes Pseudomonas aeruginosa MIC 15.63, 7.81, 31.25 ciprofloxacin (7.81, 3.9 15.63 µg/ml). suppressed biofilms minimum biofilm inhibitory concentrations 1.95, 7.81 fore mentioned strains, Overall, our findings indicate could be leading natural source care cosmetic industry.

Language: Английский

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Green Synthesis of Zinc Oxide Nanoparticles (ZnO-NPs) by Pseudomonas aeruginosa and Their Activity against Pathogenic Microbes and Common House Mosquito, Culex pipiens

Materials, Journal Year: 2021, Volume and Issue: 14(22), P. 6983 - 6983

Published: Nov. 18, 2021

The synthesis of nanoparticles by green approaches is gaining unique importance due to its low cost, biocompatibility, high productivity, and purity, being environmentally friendly. Herein, biomass filtrate Pseudomonas aeruginosa isolated from mangrove rhizosphere sediment was used for the biosynthesis zinc oxide (ZnO-NPs). bacterial isolate identified based on morphological, physiological, 16S rRNA. bio-fabricated ZnO-NPs were characterized using color change, UV-visible spectroscopy, FT-IR, TEM, XRD analyses. In current study, spherical crystalline nature successfully formed at a maximum SPR (surface plasmon resonance) 380 nm. bioactivities fabricated including antibacterial, anti-candida, larvicidal efficacy investigated. Data analysis showed that these concentration-dependent. green-synthesized exhibited against pathogenic Gram-positive bacteria (Staphylococcus aureus Bacillus subtilis), Gram-negative (Escherichia coli aeruginosa), unicellular fungi (Candida albicans) with inhibition zones (12.33 ± 0.9 29.3 0.3 mm), (19.3 11.7 (22.3 respectively, 200 ppm. MIC value detected as 50 ppm E. coli, B. subtilis, C. albicans, S. P. ranging between 0.3–14.6 0.6 mm. Moreover, biosynthesized mortality Culex pipiens percentages 100 0.0% after 24 h compared acetate (44.3 3.3%) same concentration time.

Language: Английский

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Mycosynthesis of Hematite (α-Fe2O3) Nanoparticles Using Aspergillus niger and Their Antimicrobial and Photocatalytic Activities

Bioengineering, Journal Year: 2022, Volume and Issue: 9(8), P. 397 - 397

Published: Aug. 17, 2022

Nanoparticles (NPs) and nanomaterials (NMs) are now widely used in a variety of applications, including medicine, solar energy, drug delivery, water treatment, pollution detection. Hematite (α-Fe2O3) nanoparticles (Hem-NPs) were manufactured this work by utilizing cost-effective ecofriendly approach that included biomass filtrate A. niger AH1 as bio-reducer. The structural optical properties Hem-NPs investigated using X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), UV-visible Fourier-transform infrared (FTIR) spectroscopies. results revealed all the studied parameters, well their interactions, had significant impact on crystallite size. average diameter size biosynthesized ranged between 60 80 nm. antimicrobial photocatalytic activities investigated. exhibited antibacterial activity against E. coli, B. subtilis, S. mutans with MICs 125, 31.25, 15.62 µg/mL, respectively. Moreover, antifungal C. albicans fumigatus, where 2000 62.5 efficiency was determined for rapid biodegradation crystal violet (CV) dye, reaching up to 97 percent after 150 min. Furthermore, successfully more than once regarded its efficacy. In conclusion, demonstrated both CV dye.

Language: Английский

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The Potency of Fungal-Fabricated Selenium Nanoparticles to Improve the Growth Performance of Helianthus annuus L. and Control of Cutworm Agrotis ipsilon

Catalysts, Journal Year: 2021, Volume and Issue: 11(12), P. 1551 - 1551

Published: Dec. 19, 2021

The application of green nanotechnology in agriculture has been receiving substantial attention, especially the development new nano-fertilizers and nano-insecticides. Herein, metabolites secreted by fungal strain Penicillium chrysogenum are used as a reducing agent for selenium ions to form nanoparticles (Se-NPs). synthesized Se-NPs were characterized using color change, UV-Vis spectroscopy, Fourier transform infrared (FT-IR) transmission electron microscopy (TEM), energy dispersive X-ray (EDX), diffraction (XRD), dynamic light scattering (DLS). biomass filtrate changed from colorless ruby red after mixing with sodium selenite maximum surface plasmon resonance at 262 nm. Data exhibits successful formation spherical, amorphous sizes ranging between 3–15 nm weight percentage 38.52%. efficacy on growth performance sunflower (Helianthus annuus L.) inhibition cutworm Agrotis ipsilon was investigated. field experiment revealed potentiality enhance parameters carotenoid content sunflower, 20 ppm. chlorophylls, carbohydrates, proteins, phenolic compounds, free proline contents markedly promoted response concentrations. antioxidant enzymes (peroxidase, catalase, superoxide dismutase, polyphenol oxidase) significantly decreased compared control. analysis showed that highest mortality 1st, 2nd, 3rd, 4th, 5th instar larvae achieved 25 ppm percentages 89.7 ± 0.3, 78.3 72.3 0.6, 63.7 68.7 0.3 respectively 72 h.

Language: Английский

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Synthesis of nanoparticles using microorganisms and their applications: a review

Environmental Chemistry Letters, Journal Year: 2022, Volume and Issue: 20(5), P. 3153 - 3197

Published: July 9, 2022

Language: Английский

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New Green Approaches in Nanoparticles Synthesis: An Overview

Molecules, Journal Year: 2022, Volume and Issue: 27(19), P. 6472 - 6472

Published: Oct. 1, 2022

Nanotechnology is constantly expanding, with nanomaterials being more and used in common commercial products that define our modern life. Among all types of nanomaterials, nanoparticles (NPs) occupy an important place, considering the great amount produced nowadays diversity their applications. Conventional techniques applied to synthesize NPs have some issues impede them from appreciated as safe for environment health. The alternative these might be use living organisms or biological extracts can involved green approach synthesis NPs, a process free harmful chemicals, cost-effective low energy consumer. Several factors, including reducing agent concentration, initial precursor salt agitation, reaction time, pH, temperature light, influence characteristics biologically synthesized NPs. interdependence between parameters was not explored, main impediment implementation method on industrial scale. Our aim present brief review focuses current knowledge regarding how aforementioned factors control size shape green-synthesized We also provide overview biomolecules were found suitable NP synthesis. This work meant support researchers who intend develop new approaches

Language: Английский

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An Eco-Friendly Approach to the Control of Pathogenic Microbes and Anopheles stephensi Malarial Vector Using Magnesium Oxide Nanoparticles (Mg-NPs) Fabricated by Penicillium chrysogenum

International Journal of Molecular Sciences, Journal Year: 2021, Volume and Issue: 22(10), P. 5096 - 5096

Published: May 12, 2021

The discovery of eco-friendly, rapid, and cost-effective compounds to control diseases caused by microbes insects are the main challenges. Herein, magnesium oxide nanoparticles (MgO-NPs) successfully fabricated harnessing metabolites secreted Penicillium chrysogenum. MgO-NPs were characterized using UV-Vis, XRD, TEM, DLS, EDX, FT-IR, XPS analyses. Data showed successful formation crystallographic, spherical, well-dispersed with sizes 7–40 nm at a maximum wavelength 250 nm. EDX analysis confirms presence Mg O ions as components weight percentages 13.62% 7.76%, respectively. activity an antimicrobial agent was investigated against pathogens Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Escherichia coli, Candida albicans, exhibited zone inhibitions 12.0 ± 0.0, 12.7 0.9, 23.3 0.8, 17.7 1.6, 14.7 0.6 mm respectively, 200 µg mL−1. is decreased decreasing concentration. biogenic exhibit high efficacy different larvae instar pupa Anopheles stephensi, LC50 values 12.5–15.5 ppm for I–IV 16.5 pupa. Additionally, 5 mg/cm2 highest protection adults 100% 150 min 67.6% 1.4% 210 min.

Language: Английский

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Aspergillus flavus-Mediated Green Synthesis of Silver Nanoparticles and Evaluation of Their Antibacterial, Anti-Candida, Acaricides, and Photocatalytic Activities

Catalysts, Journal Year: 2022, Volume and Issue: 12(5), P. 462 - 462

Published: April 21, 2022

Aspergillus flavus F5 was used to reduce AgNO3 form silver nanoparticles (Ag-NPs) that were monitored by a color change from colorless yellowish-brown. The characterizations achieved UV-Vis spectroscopy, FT-IR, TEM, SEM-EDX, and XRD. Data showed there successful formation of crystalline, spherical shape Ag-NPs with particle average size 12.5 ± 5.1 nm. FT-IR clarified the role various functional groups in reducing/capping process. EDX-SEM revealed main component as-formed sample set be mainly Ag weight percentage 46.1%. synthesized exhibit antibacterial anti-Candida activity against Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Escherichia coli, Candida albicans, C. glabrata, tropicalis, parapsilosis, inhibition zones ranging between 9.3 0.5 20.8 0.3 nm based on concentrations MIC values 6.25 25 ppm. mortality percentages Tyrophagus putrescentiae mite species due mixing their diet different 0.5, 1.0, 1.5 mg 55.7 2.1, 73.3 1.5, 87.4 1.6% respectively after 20 days post-treatment. catalytic degrade methylene blue (MB) investigated presence absence light irradiation. high photocatalytic degradation MB compared dark conditions at times concentrations. At concentration 70 mg/30 mL 200 min., dye removal 86.4 0.4% irradiation versus 66.5 1.1% conditions.

Language: Английский

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