Antioxidant, anticancer and enhanced photocatalytic potentials of gold nanoparticles biosynthesized by common reed leaf extract

El-Borady, Ola M.; Fawzy, Manal; Hosny, Mohamed

doi:10.1007/s13204-021-01776-w

Cited by 40 publications

(25 citation statements)

References 57 publications

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“…Prepared gold nanoparticles also exhibited good quenching for 2,2-diphenyl-1-picrylhydrazyl free radical with scavenging % equal to 10.26. Phragmites australis-based gold nanoparticles also showed excellent photocatalytic activity, as they completely degraded the MB in just 60 s. Mentha Longifolia-mediated nanoparticles had tremendous anti-breast cancer efficiency against HS319.T, MCF7, and UACC-3133 cell lines [137]. An environmentally friendly method for the biological formation of gold nanoparticles was developed by Shah, Sumaira, et al, using ethanol leaf extract of Sageretia theazans.…”

Section: Synthesis Of Gold Nanoparticles Using Leaves: (2019-2021)mentioning

confidence: 99%

Green Synthesis of Metal and Metal Oxide Nanoparticles Using Different Plants’ Parts for Antimicrobial Activity and Anticancer Activity: A Review Article

et al. 2021

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Nanotechnology emerged as a scientific innovation in the 21st century. Metallic nanoparticles (metal or metal oxide nanoparticles) have attained remarkable popularity due to their interesting biological, physical, chemical, magnetic, and optical properties. Metal-based nanoparticles can be prepared by utilizing different biological, physical, and chemical methods. The biological method is preferred as it provides a green, simple, facile, ecofriendly, rapid, and cost-effective route for the green synthesis of nanoparticles. Plants have complex phytochemical constituents such as carbohydrates, amino acids, phenolics, flavonoids, terpenoids, and proteins, which can behave as reducing and stabilizing agents. However, the mechanism of green synthesis by using plants is still highly debatable. In this report, we summarized basic principles or mechanisms of green synthesis especially for metal or metal oxide (i.e., ZnO, Au, Ag, and TiO2, Fe, Fe2O3, Cu, CuO, Co) nanoparticles. Finally, we explored the medical applications of plant-based nanoparticles in terms of antibacterial, antifungal, and anticancer activity.

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Section: Synthesis Of Gold Nanoparticles Using Leaves: (2019-2021)mentioning

confidence: 99%

Green Synthesis of Metal and Metal Oxide Nanoparticles Using Different Plants’ Parts for Antimicrobial Activity and Anticancer Activity: A Review Article

et al. 2021

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“…The distinctive features of phytosynthesized gold nanoparticles (phyto-AuNPs) are their high catalytic ability in the process of organic dye degradation [ 2 , 7 ]; antibacterial [ 8 ], anticancer [ 9 ], and antioxidant activity [ 8 , 9 , 10 ]; and biocompatibility and low cytotoxicity [ 5 ], which makes phyto-AuNPs very attractive for biomedical applications, including theranostics, diagnostic studies, cell imaging, photodynamic therapy, as well as drug, protein, and gene delivery [ 5 , 11 ]. In electrosensing, phyto-AuNPs have not been frequently used yet, which is primarily due to the lack of knowledge about their electrochemistry.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Properties of Phytosynthesized Gold Nanoparticles for Electrosensing

Stozhko

Bukharinova

Khamzina

et al. 2021

Sensors

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Gold nanoparticles are widely used in electrosensing. The current trend is to phytosynthesize gold nanoparticles (phyto-AuNPs) on the basis of the “green” chemistry approach. Phyto-AuNPs are biologically and catalytically active, stable and biocompatible, which opens up broad perspectives in a variety of applications, including tactile, wearable (bio)sensors. However, the electrochemistry of phytosynthesized nanoparticles is not sufficiently studied. This work offers a comprehensive study of the electrochemical activity of phyto-AuNPs depending on the synthesis conditions. It was found that with an increase in the aliquot of the plant extract, its antioxidant activity (AOA) and pH, the electrochemical activity of phyto-AuNPs grows, which is reflected in the peak potential decrease and an increase in the peak current of phyto-AuNPs electrooxidation. It has been shown that AOA is an important parameter for obtaining phyto-AuNPs with desired properties. Electrodes modified with phyto-AuNPs have demonstrated better analytical characteristics than electrodes with citrate AuNPs in detecting uric and ascorbic acids under model conditions. The data about the phyto-AuNPs’ electrochemistry may be useful for creating highly effective epidermal sensors with good biocompatibility.

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“…Vitamin C (ascorbic acid) was employed as a positive control. The activity was measured by the following equation 109 , 110 where control absorbance is the absorbance in the absence of antioxidants and sample absorbance is the absorbance in the presence of antioxidants (AuNPs, rGO-AuNPs, or vitamin C) at 517 nm.…”

Section: Methodsmentioning

confidence: 99%

Catalytic and Medical Potential of a Phyto-Functionalized Reduced Graphene Oxide–Gold Nanocomposite Using Willow-Leaved Knotgrass

et al. 2021

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In the current study, a simple, environmentally friendly, and cost-effective reduced graphene oxide–gold nanoparticle (rGO-AuNP) nanocomposite was successfully phytosynthesized using the aqueous leaf extract of a common weed found on the Nile banks, Persicaria salicifolia , for the first time. The phytosynthesis of rGO-AuNPs was first confirmed via the color transformation from brown to black as well as throughvarious techniques such as transmission electron microscopy (TEM) and Raman spectroscopy. Two UV–vis peaks at 275 and 530 nm were observed for the nanocomposite with a typical particle size of mostly spherical AuNPs of 15–20 nm. However, other shapes were occasionally detected including rods, triangles, and rhomboids. Existing phytoconstituents such as flavonoids and glycosides in the plant extract were suggested to be responsible for the phytosynthesis of rGO-AuNPs. The excellent catalytic efficacy of rGO-AuNPs against MB degradation was confirmed, and a high antibacterial efficiency against Escherichia coli and Klebsiella pneumonia was also confirmed. Promising antioxidant performance of rGO-AuNPs was also proved. Furthermore, it was concluded that rGO-AuNPs acquired higher efficiency than AuNPs synthesized from the same plant extract in all of the studied applications.

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Antioxidant, anticancer and enhanced photocatalytic potentials of gold nanoparticles biosynthesized by common reed leaf extract

Cited by 40 publications

References 57 publications

Green Synthesis of Metal and Metal Oxide Nanoparticles Using Different Plants’ Parts for Antimicrobial Activity and Anticancer Activity: A Review Article

Green Synthesis of Metal and Metal Oxide Nanoparticles Using Different Plants’ Parts for Antimicrobial Activity and Anticancer Activity: A Review Article

Electrochemical Properties of Phytosynthesized Gold Nanoparticles for Electrosensing

Catalytic and Medical Potential of a Phyto-Functionalized Reduced Graphene Oxide–Gold Nanocomposite Using Willow-Leaved Knotgrass

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