Antioxidant activity of ZnO Nanoparticles synthesized using <i>Luffa acutangula</i> peel extract

Ananthalakshmi, R; Rajarathinam, S. R. Xavier; Sadiq, A. Mohamed

doi:10.5958/0974-360x.2019.00260.9

Cited by 25 publications

(8 citation statements)

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“…Kuntze is lower compared to the standard ascorbic acid. The present report of antioxidant activity was higher than previously reported literature (Ananthalakshmi et al, 2019; Jamil et al, 2021; Safawo et al, 2018; Tettey & Shin, 2019). A possible mechanism of antioxidant action of ZnO NPs discussed in earlier reports was the transfer of electron density located at Oxygen to the odd electron located at nitrogen atom in DPPH, causing a decrease in n → π* energy transition at 517 nm (Das et al, 2013; Es‐haghi et al, 2019).…”

Section: Resultscontrasting

confidence: 80%

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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

Dey

Sundarapandian

2022

Microscopy Res & Technique

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The present work has reported a green chemistry-based approach for the synthesis of crystalline metal oxide nanoparticle using plant extract to reduce metal ions. It demonstrated the efficient synthesis of Zinc oxide nanoparticles (ZnO NPs) using aqueous leaf extract of Thryallis glauca (Cav.) Kuntze with a focus on minimizing toxic reactants and byproducts. The physicochemical characterizations by standard methods and the mechanism of action were presented. The UV-Vis absorption peak of the annealed ZnO NPs appeared at a 359 nm wavelength. The calculated direct band-gap energy was 3.6 eV. The peak at 567 nm in the visible region in the photoluminescence spectra indicated surface defects from oxygen vacancy, and the vibrational peak also indicated it at 582 cm À1 in Raman spectra. FTIR spectroscopy showed the possible involvement of proteins, aromatic compounds, and alcohols as reducing agents in the reaction. X-ray diffraction analysis revealed that pure crystalline ZnO NPs have structural properties as hexagonal wurtzite below 50 nm size.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. Highlights• Renewable, eco-friendly plant material was used to synthesize Zinc Oxide nanoparticles (NPs).• Synthesis of thermally stable, pure crystalline NPs with good optical properties.• The synthesized NPs showed excellent free radical scavenging activity.• ZnO NPs exhibited antibacterial resistance at the test concentrations.

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Section: Resultscontrasting

confidence: 80%

Section: Biosynthesis Mechanismcontrasting

confidence: 85%

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

Dey

Sundarapandian

2022

Microscopy Res & Technique

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“…Mahendran and Kumari [ 51 ] and Reddy et al [ 52 ] also observed similar observations in the fruit extract of Nothapodytes nimmoniana and Piper longum where fruit extracts were observed with higher antioxidant potential than the green-synthesized Ag-NPs. Previous studies also discussed the antioxidant potential of ZnO-NPs synthesized from the plant parts of Azadirachta indica [ 49 ], Carica papaya [ 53 ], and Luffa acutangula [ 54 ]. In all these studies, ZnO-NPs showed a broad spectrum of antioxidant activity by effectively inhibiting the reactive oxygen species.…”

Section: Resultsmentioning

confidence: 99%

Rubus ellipticus Sm. Fruit Extract Mediated Zinc Oxide Nanoparticles: A Green Approach for Dye Degradation and Biomedical Applications

et al. 2022

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Rubus ellipticus fruits aqueous extract derived ZnO-nanoparticles (NPs) were synthesized through a green synthesis method. The structural, optical, and morphological properties of ZnO-NPs were investigated using XRD, FTIR, UV-vis spectrophotometer, XPS, FESEM, and TEM. The Rietveld refinement confirmed the phase purity of ZnO-NPs with hexagonal wurtzite crystalline structure and p-63-mc space group with an average crystallite size of 20 nm. XPS revealed the presence of an oxygen chemisorbed species on the surface of ZnO-NPs. In addition, the nanoparticles exhibited significant in vitro antioxidant activity due to the attachment of the hydroxyl group of the phenols on the surface of the nanoparticles. Among all microbial strains, nanoparticles’ maximum antibacterial and antifungal activity in terms of MIC was observed against Bacillus subtilis (31.2 µg/mL) and Rosellinia necatrix (15.62 µg/mL), respectively. The anticancer activity revealed 52.41% of A549 cells death (IC50: 158.1 ± 1.14 µg/mL) at 200 μg/mL concentration of nanoparticles, whereas photocatalytic activity showed about 17.5% degradation of the methylene blue within 60 min, with a final dye degradation efficiency of 72.7%. All these results suggest the medicinal potential of the synthesized ZnO-NPs and therefore can be recommended for use in wastewater treatment and medicinal purposes by pharmacological industries.

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“…The band at 3410 cm −1 represents the vibration of the hydroxyl group (O-H) [ 35 ]. The bands at 1384 and 1120 cm −1 are attributed to the C-H and C-O vibrations of the carboxylic groups present in the organic molecules of the Prosopis laevigata extract [ 36 , 37 ]. Finally, the band observed at 400 cm −1 in the three samples analyzed is attributed to the stretching of metal–oxygen (Zn-O), which confirms the obtaining of ZnO nanoparticles [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Theoretical and Experimental Study of the Photocatalytic Properties of ZnO Semiconductor Nanoparticles Synthesized by Prosopis laevigata

Luque Morales,

Chinchillas Chinchillas

et al. 2023

Materials

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In this work, the photocatalytic activity of nanoparticles (NPs) of zinc oxide synthetized by Prosopis laevigata as a stabilizing agent was evaluated in the degradation of methylene blue (MB) dye under UV radiation. The theoretical study of the photocatalytic degradation process was carried out by a Langmuir–Hinshelwood–Hougen–Watson (LHHW) model. Zinc oxide nanoparticles were synthesized by varying the concentration of natural extract of Prosopis laevigata from 1, 2, and 4% (weight/volume), identifying the samples as ZnO_PL1%, ZnO_PL2%, and ZnO_PL4%, respectively. The characterization of the nanoparticles was carried out by Fourier transform infrared spectroscopy (FT-IR), where the absorption band for the Zn-O vibration at 400 cm−1 was presented; by ultraviolet–visible spectroscopy (UV–vis) the value of the band gap was calculated, resulting in 2.80, 2.74 and 2.63 eV for the samples ZnO_PL1%, ZnO_PL2%, and ZnO_PL4%, respectively; XRD analysis indicated that the nanoparticles have a hexagonal zincite crystal structure with an average crystal size of 55, 50, and 49 in the sample ZnO_PL1%, ZnO_PL2%, and ZnO_PL4%, respectively. The morphology observed by TEM showed that the nanoparticles had a hemispherical shape, and the ZnO_PL4% sample presented sizes ranging between 29 and 45 nm. The photocatalytic study showed a total degradation of the MB in 150, 120, and 60 min for the samples ZnO_PL1%, ZnO_PL2%, and ZnO_PL4%, respectively. Also, the model explains the experimental observation of the first-order kinetic model in the limit of low concentrations of dye, indicating the influence of the mass transfer processes.

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Antioxidant activity of ZnO Nanoparticles synthesized using Luffa acutangula peel extract

Cited by 25 publications

References 0 publications

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

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

Rubus ellipticus Sm. Fruit Extract Mediated Zinc Oxide Nanoparticles: A Green Approach for Dye Degradation and Biomedical Applications

Theoretical and Experimental Study of the Photocatalytic Properties of ZnO Semiconductor Nanoparticles Synthesized by Prosopis laevigata

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