Enhanced catalytic and antibacterial efficiency of biosynthesized Convolvulus fruticosus extract capped gold nanoparticles (CFE@AuNPs)

Ebrahimzadeh, Mohammad Ali; Naghizadeh, Ali; Mohammadi‐Aghdam, Sarvin; Khojasteh, Hossein; Ghoreishi, Seyedeh Masoumeh; Mortazavi‐Derazkola, Sobhan

doi:10.1016/j.jphotobiol.2020.111949

Cited by 57 publications

(18 citation statements)

References 43 publications

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“…The size of AgNPs was in the range of 10.63 nm À 47.37 nm and average size was 25.96 nm. The shape of AgNPs were highly diversified which included spherical and some were oval (Figure 4(A-C)) [7] reported average particle size of 25-60 nm of gold nanoaprticles synthesized using the Convolvulus fruticosus extract. The SAED image showed bright circular spots corresponding to various orientations appearing inside the rings indicated that AgNPs were crystalline in nature (Figure 4(D)).…”

Section: Transmission Electron Microscopy Analysis (Tem)mentioning

confidence: 99%

Synthesis of silver nanoparticles using Ziziphus nummularia leaf extract and evaluation of their antimicrobial, antioxidant, cytotoxic and genotoxic potential (4-in-1 system)

Padalia

Chanda

2021

Artificial Cells, Nanomedicine, and Biotechnology

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This study reports the synthesis of silver nanoparticles (AgNPs) from silver nitrate by leaf extract of a medicinal plant Ziziphus nummularia. The leaf extract acts as a reducing and stabilizing agent for the formation of nanoparticles. The green synthesized AgNPs were characterized by ultraviolet-visible (UV-vis) spectroscopy, Fourier transform infrared (FITR) spectroscopy, Thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM) analysis and evaluated their antimicrobial, antioxidant, cytotoxic and genotoxic potential. The UV-Vis spectroscopy showed a characteristic absorption peak at 430 nm due to surface plasma resonance. TEM analysis showed that synthesized AgNPs were spherical and oval with an average size of 25.96 nm. AgNPs showed effective antimicrobial activity (lowest MIC-0.625 mg/mL against Escherichia coli), synergistic antimicrobial activity (lowest RFIC 0.09 with chlormaphenicol against Corynebacterium rubrum) and antibiofilm activity. AgNPs showed strong DPPH activity with IC 50 À 520 mg/mL and ABTS activity IC 50 À 55 mg/mL and reducing capacity assessment. In vitro cytotoxic effect was evaluated by MTT assay against HeLa cells, breast cells and fibroblast cells. Genotoxic effect was evaluated by comet assay. AgNPs displayed dose-dependent cytotoxic and genotoxic effect. Our findings indicated that synthesized AgNPs could be considered as multifunctional and have great potential for use in biomedical applications. HIGHLIGHTSSilver nanoparticles were synthesized using leaf extract of Ziziphus nummularia Characterization was done by various spectral techniques Antimicrobial efficacy was demonstrated against an array of bacteria AgNPs exhibited significant cytotoxic effect against HeLa cell line AgNPs showed cytotoxicity and genotoxicity in a dose-dependent manner

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Section: Transmission Electron Microscopy Analysis (Tem)mentioning

confidence: 99%

Synthesis of silver nanoparticles using Ziziphus nummularia leaf extract and evaluation of their antimicrobial, antioxidant, cytotoxic and genotoxic potential (4-in-1 system)

Padalia

Chanda

2021

Artificial Cells, Nanomedicine, and Biotechnology

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“…In contrast, inorganic antibacterial materials possess good chemical and physical properties, produce less environmental pollution, and affect human health to a smaller extent. Currently, most studies have focused on combining nanomaterial science techniques with the inherent antibacterial activity of inorganic metal oxides [ 5 , 6 ], to develop metal oxide nanoparticles for use as novel antibacterial materials [ 7 , 8 ]. The application of metal oxides is a suitable alternative to the current antibacterial methods, as most metal oxides provide sterilizing effects.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Characteristics and Antibacterial Activity of Polymer-Modified Copper Oxide Nanoparticles

Chen

Liao

Lin

et al. 2021

IJMS

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The proliferation of drug-resistant pathogens continues to increase, giving rise to serious public health concerns. Many researchers have formulated metal oxide nanoparticles for use as novel antibacterial agents. In the present study, copper oxide (CuO) was synthesized by simple hydrothermal synthesis, and doping was performed to introduce different polymers onto the NP surface for bacteriostasis optimization. The polymer-modified CuO NPs were analyzed further with XRD, FTIR, TEM, DLS and zeta potential to study their morphology, size, and the charge of the substrate. The results indicate that polymer-modified CuO NPs had a significantly higher bacteriostatic rate than unmodified CuO NPs. In particular, polydopamine (PDA)-modified CuO (CuO-PDA) NPs, which carry a weakly negative surface charge, exhibited excellent antibacterial effects, with a bacteriostatic rate of up to 85.8 ± 0.2% within 3 h. When compared to other polymer-modified CuO NPs, CuO-PDA NPs exhibited superior bacteriostatic activity due to their smaller size, surface charge, and favorable van der Waals interactions. This may be attributed to the fact that the CuO-PDA NPs had relatively lipophilic structures at pH 7.4, which increased their affinity for the lipopolysaccharide-containing outer membrane of the Gram-negative bacterium Escherichia coli.

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“…While cinnamon leaves, garlic, basil leaves, curry leaves, ginger root, and mustard exhibit antibacterial properties against a wide range of both Gram-negative and Gram-positive bacteria (Bacillus cereus, Staphylococcus aureus, Listeria monocytogenes, Escherichia coli (E. coli), and Salmonella infantis) [19], extracts of cruciferous vegetables show resistance against Gram-negative bacteria [20]. Besides, the application of innovative techniques such as biosynthesis of nanoparticles using extracts with antioxidant and antibaterial activity could enhance antibacterial properties [21,22].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Phytochemical Contents, Antioxidant and Antibacterial Activities of Various Solvent Extracts Obtained from ‘Maluma’ Avocado Pulp Powder

Nguyen

et al. 2021

Molecules

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Although avocado is a superfood rich in phytochemicals with high antioxidant activities, studies on the antibacterial properties of its pulp are limited, except for seed and peel portions. In this study, three types of solvent (acetone, methanol, and diethyl ether) were used to obtain the extracts from “Maluma” avocado pulp powder prepared by infrared drying. The extracts were analyzed for total polyphenols, phytopigments (total chlorophylls and carotenoids), antioxidant activities (ferric-reducing antioxidant power (FRAP), 2,2-Diphenyl-1-picrylhydrazyl (DPPH), and 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays), and antibacterial activities against seven pathogens (Shigella sonnei ATCC 9290, Escherichia coli ATCC 8739, Salmonella typhi ATCC 6539, Vibrio parahaemolyticus ATCC 17802, Proteus mirabilis ATCC 25933, Staphylococcus aureus ATCC 6538, and Bacillus cereus ATCC 11778). The results showed that the acetone solvent could extract the highest polyphenols and chlorophylls with the highest antioxidant activity in terms of ABTS and DPPH assays. In contrast, diethyl ether exhibited the most significant content of carotenoids and FRAP values. However, the methanol extract was the best solvent, exerting the strongest antibacterial and meaningful antioxidant activities. For the bacterial activities, Gram-positive pathogens (Bacillus cereus and Staphylococcus aureus) were inhibited more efficiently by avocado extracts than Gram-negative bacteria. Therefore, the extracts from avocado powder showed great potential for applications in food processing and preservation, pharmaceuticals, and cosmetics.

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Enhanced catalytic and antibacterial efficiency of biosynthesized Convolvulus fruticosus extract capped gold nanoparticles (CFE@AuNPs)

Cited by 57 publications

References 43 publications

Synthesis of silver nanoparticles using Ziziphus nummularia leaf extract and evaluation of their antimicrobial, antioxidant, cytotoxic and genotoxic potential (4-in-1 system)

Synthesis of silver nanoparticles using Ziziphus nummularia leaf extract and evaluation of their antimicrobial, antioxidant, cytotoxic and genotoxic potential (4-in-1 system)

Investigation of the Characteristics and Antibacterial Activity of Polymer-Modified Copper Oxide Nanoparticles

Comparison of Phytochemical Contents, Antioxidant and Antibacterial Activities of Various Solvent Extracts Obtained from ‘Maluma’ Avocado Pulp Powder

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