Green synthesis and characterization of zinc oxide nanoparticles using leaf extract of <scp><i>Thryallis glauca</i></scp> (<scp>Cav.</scp>) Kuntze and their role as antioxidant and antibacterial

Dey, Arpita; Sundarapandian, Somaiah

doi:10.1002/jemt.24132

Cited by 26 publications

(9 citation statements)

References 54 publications

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“…ZnO NPs have a perfect crystalline structure situated shown by the thin and strong peaks of diffraction. From Figure 6 (a and b), one can conclude that the diffractions peaks along (101) plane are more dominant and stronger peaks, and the obtained XRD results behaviors are good agreement with previous studies [12,[21][22][23][24][25][26] . While Figure 6 (c) shows a higher and stronger diffraction peak at the plane of (100), which indicated that the most of ZnO NPs were grown at the plane (100) and the obtained results behavior are in good agreement with previous studies [38] .…”

Section: X-ray Diffraction (Xrd) Analysissupporting

confidence: 89%

“…They found that the ZnO NPs were grown with wurtzite hexagonal structure less than 50 nm and the antioxidant analysis by DPPH assay illustrated an excellent free radical scavenging activity. The prepared ZnO NPs tested against pathogenic Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtilis did not show any antibacterial activity [21] . Abdullah M Abdo, et.…”

Section: Introductionmentioning

confidence: 93%

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Biosynthesis and Characterization of ZnO Nanoparticles by using Leaf Extractionof Allium Calocephalum Wendelbow Plant

Abdulqudos¹,

Abdulrahman

2022

PJBAS

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Zinc Oxide (ZnO) nanoparticles (NPs) were biosynthesized by using a leaf extract of Allium Calocephalum Wendelbow (ACW) plant. The impact of various zinc salts on the characteristic's properties of synthesized ZnO NPs and which salt is more suitable for the synthesis of the ZnO NPs were investigated. The used different zinc salts were Zinc Nitrate Hexahydrate (ZNH), Zinc Acetate (ZA), and Zinc Chloride (ZC). The properties of synthesized NPs were studied using a variety of characterization techniques. The FTIR analysis and UV-Visible spectroscopy of ACW plant leaf extract proved to suggest this extract is a better choice for the green synthesis of ZnO NPs. The UV-Visible spectra of leaf extract showed two distinct absorption peaks in the region of 262 nm and 350 nm at ambient temperature. The FE-SEM analysis revealed a spherical form of ZnO NPs having an (average) mean size in the range of (21.61-63.12) nm. Also, XRD results revealed the formation of a hexagonal wurtzite structure. The crystal size of produced ZnO NPs along the (002) diffraction peak was in the range of (16.91 to 28.19) nm for different Zinc salt. The EDX analysis shows that the produced Zn O NPs are very pure. The FTIR results displayed there is no obvious peak in the monitoring range, suggesting that the ZnO NPs created via using ACW Leaf Extract. Also, the UV-Vis. results of ZnO NPs showed that the sharpness peak in exciton absorption region, and UV absorption edge were found (381-397) nm, which is corresponding to the Eg of the ZnO NPs, and the investigated Eg of ZnO NPs was in the range of (3.12-3.25) eV. In addition, from all obtained results of the fabricated ZnO NPs, the ZnO NPs synthesized from zinc salt which is the Zinc Nitrate Hexahydrate showed the very high-quality and improved rather than the ZnO NPs synthesized from other zinc salts.

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Section: X-ray Diffraction (Xrd) Analysissupporting

confidence: 89%

Section: Introductionmentioning

confidence: 93%

Biosynthesis and Characterization of ZnO Nanoparticles by using Leaf Extractionof Allium Calocephalum Wendelbow Plant

Abdulqudos¹,

Abdulrahman

2022

PJBAS

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“…Therefore, applying ZnO-NPs promoted better adaptation toward salinity stress in Kargi and CSR 30 by lowering the Na+ concentration and Na + /K + ratio in their leaves and improving the K + ion concentration. Improving the Na +/ K + balance is a key trait of salinity tolerance for plants to better adapt under salinity stress conditions [85]. Similar results on Zea mays and Gossypium spp.…”

Section: Discussionmentioning

confidence: 56%

“…In living cells, potassium helps maintain the turgidity and regulation of essential enzyme activity of the cell. At the same time, the shortage of K + ions and the high Na + /K + ratio inhibits the growth and development of plants [84][85][86][87]. Therefore, applying ZnO-NPs promoted better adaptation toward salinity stress in Kargi and CSR 30 by lowering the Na+ concentration and Na + /K + ratio in their leaves and improving the K + ion concentration.…”

Section: Discussionmentioning

confidence: 99%

Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices

et al. 2022

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Understanding the salinity stress mechanisms is essential for crop improvement and sustainable agriculture. Salinity is prepotent abiotic stress compared with other abiotic stresses that decrease crop growth and development, reducing crop production and creating food security-related threats. Therefore, the input of metal oxide nanoparticles (NPs) such as zinc oxide nanoparticles (ZnO-NPs) can improve salt tolerance in crop plants, especially in the early stage of growth. Therefore, the aim of the current study was to evaluate the impact of ZnO-NPs on inducing salt tolerance in two rice (Oryza sativa L.) genotypes of seedlings. An undocumented rice landrace (Kargi) and salinity tolerance basmati rice (CSR 30) seeds were grown in a hydroponic system for two weeks with and without 50 mg/L concentrations of ZnO-NPs in various doses of NaCl (0, 60, 80, and 100 mM). Both Kargi (15.95–42.49%) and CSR 30 (15.34–33.12%) genotypes showed a reduction in plant height and photosynthetic pigments (chlorophyll a and b, carotenoids, and total chlorophyll), Zn content, and K+ uptake under stress condition, compared with control seedlings. On the other hand, stress upregulated proline, malondialdehyde (MDA), Na+ content, and antioxidant enzyme activities—namely, those of superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), and glutathione reductase (GR)—in both O. sativa genotypes over the control. However, ZnO-NP-treated genotypes (Kargi and CSR 30) restored the photosynthetic pigment accumulation and K+ level, reforming the stomata and trichome morphology, and also increased antioxidant enzymes SOD, APX, CAT, and GR activity, which alleviated the oxidative stress, while reducing the level of MDA, proline, and H2O2 under stress condition. The present findings suggest that adding ZnO-NPs could mitigate the salinity stress in O. sativa by upregulating the antioxidative system and enhancing the cultivation of undocumented landrace (Kargi) and basmati (CSR 30) genotypes of O. sativa in salinity-affected areas.

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“…A DPPH solution without a sample served as the control, while ascorbic acid served as the reference standard. The following relation was used to compute the radical scavenging activity (Dey & Somaiah, 2022):

Radical scavenging % = \frac{A_{DPPH} - A_{normalS}}{A_{DPPH}} \times 100,

where, A DPPH is the DPPH solution absorbance in the absence of the sample, while A S is the absorbance of sample/DPPH mixtures. The sample concentration needed to inhibit 50% of the initial DPPH amount (IC 50 ) was also estimated.…”

Section: Methodsmentioning

confidence: 99%

Mass production of morin‐stabilized silver nanoparticles: Characterization, antioxidant, and antimicrobial activities

Zayed,

Abdel‐Monem,

Arafa

et al. 2023

Microscopy Res & Technique

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Phytochemical‐conjugated silver nanoparticles (AgNPs) are believed to act as a bridge between nanotechnology and therapy. There is a significant need for green and mass production of such materials due to their extensive applications, especially in the biomedical sector. In this study, morin‐stabilized silver nanoparticles (morin/AgNPs) were synthesized on a massive scale using a one‐pot solid‐state technique. The reaction is achieved by ball milling of morin and silver nitrate powders at ambient temperature without any solvent or toxic reagent. The prepared morin/AgNPs exhibited a semi‐hexagonal shape and ranged in size from 21 to 43 nm. The x‐ray diffraction results elucidated the formation of highly crystalline AgNPs. Fourier transform infrared and x‐ray photoelectron spectroscopic analyses prove that the hydroxyl, carbonyl, and aromatic functionalities in morin are playing major roles in the reduction and stabilization of AgNPs. The antioxidant potential of morin/AgNPs was evaluated utilizing 2,2‐Diphenyl‐1‐picryl‐hydrazyl (DPPH) assay. Morin/AgNPs exhibited better free radical scavenging activity (IC50 = 11.7 μg/mL) than morin (IC50 = 14.8 μg/mL). Furthermore, the synthesized AgNPs showed promising antimicrobial activity against Escherichia coli, Klebsiella pneumonia, Staphylococcus aureus, Streptococcus mutans, and Candida albicans. The largest inhibition zones were observed against S. aureus (21.2 ± 0.6 mm) and K. pneumonia (20.3 ± 0.5 mm) bacteria. The foregoing results highlighted the prospective application of morin/AgNPs as a promising antioxidant and antimicrobial material for safe medical applications.Research Highlights A simple green route for the large‐scale production of AgNPs was developed. Morin acts as reducing/stabilizing agent in solid‐state synthesis of AgNPs. Morin/AgNPs exhibited promising antimicrobial and antioxidant activity.

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Green synthesis and characterization of zinc oxide nanoparticles using leaf extract of Thryallis glauca (Cav.) Kuntze and their role as antioxidant and antibacterial

Cited by 26 publications

References 54 publications

Biosynthesis and Characterization of ZnO Nanoparticles by using Leaf Extractionof Allium Calocephalum Wendelbow Plant

Biosynthesis and Characterization of ZnO Nanoparticles by using Leaf Extractionof Allium Calocephalum Wendelbow Plant

Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices

Mass production of morin‐stabilized silver nanoparticles: Characterization, antioxidant, and antimicrobial activities

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