Green synthesis of zinc oxide nanoparticles and their effect on the stability and activity of proteinase K

Koupaei, Mansoore Hosseini; Shareghi, Behzad; Saboury, Ali Akbar; Davar, Fateme; Semnani, Abolfazl; Evini, Mina

doi:10.1039/c5ra24862k

Cited by 80 publications

(31 citation statements)

References 56 publications

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“…wt% 36.40) indicating purity of ZnO NPs. Similar results were reported by Koupaei et al[30] for coffee powder extract mediated synthesized ZnO NPs.…”

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confidence: 91%

Waste to wealth: a solution to textile dyes related pollution

Narasaiah

Mandal

2020

Mater. Res. Express

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This study describes biosynthesis of Zinc oxide nanoparticles (ZnO NPs) using agro-waste durva grass aqueous extract without uses of any hazardous chemicals and stabilizing agents. Surface plasmon resonance (SPR) band of the synthesized ZnO NPs confirmed its conversion from its metal salt to NPs by UV-vis spectroscopy. Characterization of functional groups in durva grass aqueous extract and ZnO NPs surfaces were identified by Fourier transform infrared spectroscopy (FTIR), purity and crystallinity by power x-ray diffraction analysis (XRD), size and morphology by transmission electron microscopy analysis (TEM), elemental composition by Energy Dispersive x-ray spectroscopy (EDAX), stability by thermogravimetric analysis (TGA) and dynamic light scattering (DLS) study. The synthesized ZnO NPs was highly stable with average particle size of 17 nm. The photocatalytic activity of ZnO NPs was studied under UV irradiation to methylene blue (MB) and methyl orange (MO) degradation (10 mg l −1 each). 98.1% of MB was degraded within 60 min, while 97.5% of MO within 100 min. In addition, antioxidant activity of ZnO NPs showed 91.8% free radical scavenging capacity at the dose of 250 mg l −1 which implies its importance in biomedical applications.

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“…wt% 36.40) indicating purity of ZnO NPs. Similar results were reported by Koupaei et al[30] for coffee powder extract mediated synthesized ZnO NPs.…”

supporting

confidence: 91%

Waste to wealth: a solution to textile dyes related pollution

Narasaiah

Mandal

2020

Mater. Res. Express

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“…43 The occurrence in a wide range of morphologies (shapes), such as wires, needles, urchins, nanorods, sphere, ellipsoids, helices, combs, owers, etc., 44 enables gaining control over the surface to volume ratio and thus, enhances the utility of ZnO nanomaterials in different sensing applications. Furthermore, ZnO has certain remarkable features such as chemical/thermal stability, 45,46 sensitivity and selectivity. 47,48 Besides, when compared to other metal oxide NPs, ZnO nanomaterials are not only inexpensive but also relatively non-toxic (harmless/safe) and environmentally benign.…”

Section: Introductionmentioning

confidence: 99%

Green and low-cost synthesis of zinc oxide nanoparticles and their application in transistor-based carbon monoxide sensing

et al. 2020

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“…ZnO nanoparticle was synthesized using Boswellia ovalifoliolata extract due to the higher content of polyphenol may be responsible for the ZnO NPs formation. The aromatic hydroxyl presents in the Boswellia ovalifoliolata interact with zinc ions to form the complex in acidic medium and the precipitate formation started at pH 8.0 18,23 . The presence of phytochemicals in the extract like polyphenols, terpenoids tannins, anthocyanins and steroids act as a capping agent in the formation of ZnO NPs.…”

Section: Resultsmentioning

confidence: 99%

“…The plant is widely used by the tribal people like nakkala, sugali, chenchu to treat a number of ailments. Leaf, gum, and stem bark extract of the plant found to be anti-inflammatory, analgesic, cardiotoxicity 21 , cytotoxic 22 and hepatoprotective activity 23 .…”

Section: Introductionmentioning

confidence: 99%

Fluorescent zinc oxide nanoparticles of Boswellia ovalifoliolata for selective detection of picric acid

et al. 2019

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The use of Boswellia ovalifoliolata bark extract for the synthesis of zinc oxide nanoparticles (ZnO NPs) with benefits of eco-friendliness, low cost and compatibility for pharmaceutical and biological applications. In this paper, we report the biosynthesis of zinc oxide nanoparticles using plant extract and its application for the detection of picric acid (PA). The synthesized ZnO nanoparticles were characterized using UV-Vis spectroscopy, scanning electron microscopy (SEM), X-ray diffraction pattern (XRD), fourier transform infrared spectroscopy (FT-IR) and fluorescene spectroscopy. ZnO NPs in aqueous solution shows maximum absorption bands at 278 nm and fluorescence emission at 317 nm. The fluorescence emission of zinc oxide nanoparticle shows high selectivity towards picric acid (PA) and can be used as a fluorescent probe for the detection of PA via fluorescence quenching mechanism. The fluorescence quenching mechanism of picric acid may be due to the electron transfer process between ZnO NPs and picric acid which is confirmed by cyclic voltammetry (CV). The quenching efficiency of nanoparticle was calculated using Stern-Volmer equation. The limit of detection was found to be 1.83 µM for picric acid. The fluorescence property of the ZnO NPs can be utilized for cell imaging application as biosensors and also in the field of drug delivery.

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Green synthesis of zinc oxide nanoparticles and their effect on the stability and activity of proteinase K

Abstract: The use of environmentally benign materials for the synthesis of zinc oxide nanoparticles offers numerous benefits of eco-friendliness and compatibility for pharmaceutical, biotechnological and biological applications.

Cited by 80 publications

References 56 publications

Waste to wealth: a solution to textile dyes related pollution

Waste to wealth: a solution to textile dyes related pollution

Green and low-cost synthesis of zinc oxide nanoparticles and their application in transistor-based carbon monoxide sensing

Fluorescent zinc oxide nanoparticles of Boswellia ovalifoliolata for selective detection of picric acid

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