Self-assembly of ZnO nanoflowers synthesized by a green approach with enhanced catalytic, and antibacterial properties

López-Miranda, J. Luis; España‐Sánchez, Beatriz Liliana; Esparza, Rodrigo; Estévez, Miriam

doi:10.1016/j.matchemphys.2022.126453

Cited by 20 publications

(5 citation statements)

References 52 publications

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“…Antibacterial activity (AA) was performed against Gram-positive Staphylococcus aureus ATCC #6538 and Gram-negative Pseudomonas aeruginosa ATCC #13388, according to the reported in our previous works [ 49 , 50 ]. Briefly, inoculums of each microorganism were grown in Luria Bertani broth (LB) at 36 °C for 16 h and adjusted to a final concentration of 1 × 106 unit forming colonies (UFC)/mL.…”

Section: Methodsmentioning

confidence: 99%

Antibacterial and Anti-Inflammatory Properties of ZnO Nanoparticles Synthesized by a Green Method Using Sargassum Extracts

López-Miranda

Molina

González-Reyna

et al. 2023

IJMS

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The present work shows the synthesis of ZnO nanoparticles through a green method, using sargassum extracts, which provide the reducing and stabilizing compounds. The conditions of the medium in which the reaction was carried out was evaluated, that is, magnetic stirring, ultrasound assisted, and resting condition. UV-Vis, FTIR spectroscopy, and X-ray diffraction results confirmed the synthesis of ZnO with nanometric crystal size. The scanning electron microscopy analysis showed that the morphology and size of the particles depends on the synthesis condition used. It obtained particles between 20 and 200 nm in the sample without agitation, while the samples with stirring and ultrasound were 80 nm and 100 nm, respectively. ZnO nanoparticles showed antibacterial activity against Gram-positive S. aureus and Gram-negative P. aeruginosa. A quantitative analysis was performed by varying the concentration of ZnO nanoparticles. In all cases, the antibacterial activity against Gram-positives was greater than against Gram-negatives. Ultrasound-assisted ZnO nanoparticles showed the highest activity, around 99% and 80% for S. aureus and P. aeruginosa, respectively. Similar results were obtained in the study of the anti-inflammatory activity of ZnO nanoparticles; the ultrasound-assisted sample exhibited the highest percentage (93%), even above that shown by diclofenac, which was used as a reference. Therefore, the ZnO nanoparticles synthesized with sargassum extracts have properties that can be used safely and efficiently in the field of biomedicine.

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Section: Methodsmentioning

confidence: 99%

Antibacterial and Anti-Inflammatory Properties of ZnO Nanoparticles Synthesized by a Green Method Using Sargassum Extracts

López-Miranda

Molina

González-Reyna

et al. 2023

IJMS

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“…Many studies have investigated the antibacterial and cytotoxic properties of ZnO nanoparticles of varying sizes (ranging from nanometer to micrometer) and shapes (including spherical, cubical, rod-like, ower-like, and hexagonal). [49][50][51] Numerous studies have demonstrated that manipulating the size and shape of nanoparticles can effectively enhance the specic surface area of the particles, thereby exerting a notable impact on antibacterial efficacy against various microorganisms. Similarly, it has been observed that smaller nanoparticles (NPs) exhibit enhanced cellular uptake owing to their augmented surface area and enhanced ability to penetrate cell membranes.…”

Section: Resultsmentioning

confidence: 99%

Sustainable bioactivity enhancement of ZnO–Ag nanoparticles in antimicrobial, antibiofilm, lung cancer, and photocatalytic applications

Dutta,

Chinnaiyan,

Sugumaran

et al. 2023

RSC Adv.

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“…The difference in size of ZnO NP might be due to the number of phytochemicals involved in the reduction of ZnO NP as PME contained more biocompounds extracted than PAE (29,30). Despite that, surface morphology and crystallite structure analyzed showed a similar nanoflower shape with wurtzite structure, which is typical morphology for ZnO NP (5,26,32,33). Furthermore, the FTIR analysis indicated that PME showed more vibration bands than PAE, indicating that more phytochemicals were contained in PME.…”

Section: Discussionmentioning

confidence: 98%

Toxicity evaluation of zinc oxide nanoparticles green synthesized using papaya extract in zebrafish

Zavitri,

Syahbaniati,

Primastuti

et al. 2023

Biomed Rep

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In green synthesis of zinc oxide nanoparticles (ZnO NPs), the use of papaya extract as a capping and reducing agent shows promise for potential applications of these particles in biomedicine. However, toxicity evaluation is necessary to ensure the safety of humans and the environment. The zebrafish model is used to assess toxicity with embryo developmental observation as it is a rapid, simple method for screening of toxicity. The objective of the present study was to assess the toxicological characteristics of ZnO NPs produced from papaya extract using a zebrafish model. The preparation of plant extracts from papaya using two solvents (water and methanol) and characterization of bioactive compounds in the extracts were reported. ZnO NPs were synthesized from both plant extracts and characterized with scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy. Toxicity evaluation was conducted on zebrafish embryos for 96 h. ZnO NPs synthesized from aqueous and methanol extracts had mean crystallite diameters of 13 and 12 nm, respectively. Mortality, hatching rate and malformation of zebrafish embryos were assessed at different concentrations of ZnO NPs. Both NPs showed high mortality rates at high concentrations, with 100 (aqueous) and 20 mg/l (methanol extract) being lethal for all embryos. Concentrations <10 mg/l for both synthesized ZnO NPs had similar results to the negative control, indicating a safe dosage for embryos. The hatching rate and malformation were also affected, with higher concentrations of NPs causing a delayed hatching rate and malformation in pericardial and yolk sac edema. Whole embryo mRNA expression of immune-associated genes, including IL-1 and -10 and TNF-α, was upregulated following lethal concentration 50 (LC50) ZnO NP exposure. ZnO NPs synthesized from papaya extract (both in aqueous and methanol environments) had a dose-and time-dependent embryonic toxicity effect. Hence, the present study demonstrated initial toxicity screening of ZnO NPs synthesized from plant extract.

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Self-assembly of ZnO nanoflowers synthesized by a green approach with enhanced catalytic, and antibacterial properties

Cited by 20 publications

References 52 publications

Antibacterial and Anti-Inflammatory Properties of ZnO Nanoparticles Synthesized by a Green Method Using Sargassum Extracts

Antibacterial and Anti-Inflammatory Properties of ZnO Nanoparticles Synthesized by a Green Method Using Sargassum Extracts

Sustainable bioactivity enhancement of ZnO–Ag nanoparticles in antimicrobial, antibiofilm, lung cancer, and photocatalytic applications

Toxicity evaluation of zinc oxide nanoparticles green synthesized using papaya extract in zebrafish

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