A sunlight-induced method for rapid biosynthesis of silver nanoparticles using an Andrachnea chordifolia ethanol extract

Zarchi, Ali Akbar Karimi; Mokhtari, Narges; Arfan, Muhammad; Rehman, Tanzil Ur; Ali, Muhammad; Amini, Mohsen; Majidi, Reza Faridi; Shahverdi, Ahmad Reza

doi:10.1007/s00339-011-6259-6

Cited by 34 publications

(8 citation statements)

References 16 publications

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“…The present study reports the formation of biologically active Ag-NPs synthesized by a cost effective and natural synthetic method from Coriander sativum extract containing macromolecules like lignin, glycosides, aldehydes and phenolic compounds with effective antimicrobial, antioxidant and anticancer abilities. Synthesis of nanoparticles following irradiation by sunlight; a free bioenergy resource with acceptable reduction times had been documented in previous studies ( Karimi Zarchi et al, 2011 ). The reduction of silver ions by the plant extracts is marked by the appearance of yellow–brown color solution reflecting the formation of Ag-NPs.…”

Section: Discussionmentioning

confidence: 79%

Green synthesis, characterization, enhanced functionality and biological evaluation of silver nanoparticles based on Coriander sativum

Alsubki

Tabassum

Abudawood

et al. 2021

Saudi Journal of Biological Sciences

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The present study focused on the green synthesis of silver nanoparticles from Coriander sativum (CS) containing structural polymers, phenolic compounds and glycosidic bioactive macromolecules. Plant phenolic compounds can act as antioxidants, lignin, and attractants like flavonoids and carotenoids. Henceforth, silver nanoparticles (AgNPs) were prepared extracellularly by the combinatorial action of stabilizing and reduction of the CS leaf extract. The biologically synthesized CS-AgNPs were studied by UV-spectroscopy, zeta potential determination, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis to characterize and confirm the formation of crystalline nanoparticles. The synthesized nanoparticles demonstrated strong antimicrobial activity against all microbial strains examined with varying degrees. The scavenging action on free radicals by CS-AgNPs showed strong antioxidant efficiency with superoxide and hydroxyl radicals at different concentrations as compared with standard ascorbic acid. The presence of in vitro anticancer effect was confirmed at different concentrations on the MCF-7 cell line as revealed with decrease in cell viability which was proportionately related to the concentration of CS-AgNPs illustrating the toxigenic nature of synthesized nanoparticles on cancerous cells.

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Section: Discussionmentioning

confidence: 79%

Green synthesis, characterization, enhanced functionality and biological evaluation of silver nanoparticles based on Coriander sativum

Alsubki

Tabassum

Abudawood

et al. 2021

Saudi Journal of Biological Sciences

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“…Reduction of silver ions was monitored by measuring the absorbance of the reaction mixture from 300 to 600 nm using UV-vis spectrophotometer (UV-2600, Shimadzu Corporation, Kyoto, Japan) to find the absorbance peak [10]. The mixture solution was centrifuged at 22,000 g for 30 min [57] and the produced pellets were washed three times with distilled water and dried in a freeze drier to remove excess silver ions.…”

Section: Methodsmentioning

confidence: 99%

Biosynthesis of Silver Nanoparticles Using Taxus yunnanensis Callus and Their Antibacterial Activity and Cytotoxicity in Human Cancer Cells

2016

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Plant constituents could act as chelating/reducing or capping agents for synthesis of silver nanoparticles (AgNPs). The green synthesis of AgNPs has been considered as an environmental friendly and cost-effective alternative to other fabrication methods. The present work described the biosynthesis of AgNPs using callus extracts from Taxus yunnanensis and evaluated their antibacterial activities in vitro and potential cytotoxicity in cancer cells. Callus extracts were able to reduce silver nitrate at 1 mM in 10 min. Transmission electron microscope (TEM) indicated the synthesized AgNPs were spherical with the size range from 6.4 to 27.2 nm. X-ray diffraction (XRD) confirmed the AgNPs were in the form of nanocrystals. Fourier transform infrared spectroscopy (FTIR) suggested phytochemicals in callus extracts were possible reducing and capping agents. The AgNPs exhibited effective inhibitory activity against all tested human pathogen bacteria and the inhibition against Gram-positive bacteria was stronger than that of Gram-negative bacteria. Furthermore, they exhibited stronger cytotoxic activity against human hepatoma SMMC-7721 cells and induced noticeable apoptosis in SMMC-7721 cells, but showed lower cytotoxic against normal human liver cells (HL-7702). Our results suggested that biosynthesized AgNPs could be an alternative measure in the field of antibacterial and anticancer therapeutics.

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“…Sunlight irradiation, a recently reported primary energy source for nanoparticle formation, has been observed to derive AgNPs with desired physical attributes. Recent studies on sunlight driven AgNP synthesis using Allium sativum (garlic extract) and Andrachnea chordifolia ethanol leaf extract revealed that sunlight rapidly enhanced nanoparticle formation to produce spherical AgNPs with average diameters of 7.3 nm and 3.4 nm, respectively [75,76]. In addition, this use of sunlight has also been used in AgNP synthesis from Bacillus amyloliquefaciens CFS to produce circular and triangular crystalline AgNPs with an average diameter of 14.6 nm [77].…”

Section: Mechanism Of Nanoparticle Synthesis Using Plants and Microbesmentioning

confidence: 99%

Green Synthesis of Metal Nanoparticles for Antimicrobial Activity

Moodley¹,

Krishna²,

Pillay³

et al. 2021

Novel Nanomaterials

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The development and extensive spread of multi-drug resistant bacteria are considered as a major public health concern. Failures to control severe infections due to antibiotic resistance have augmented healthcare costs as well as patient morbidity and mortality. Presently, natural product-based therapeutics are gaining significant attention both for their antimicrobial effectiveness and for not persuading drug resistance. Furthermore, recent developments in nanoscience on new drug delivery systems built on nanostructured materials from plants and microbes have emerged which focus on targeted delivery and controlled release of therapeutic agents. This review examines the recent investigations on the biological activities of plant and bacterial biological material for silver nanoparticle (AgNP) synthesis. Also, the underlying mechanism of antimicrobial activities of silver nanoparticles against human pathogens will be discussed. A fact of the biological activities and/or chemical responses of plants is required, not only for the discovery of new therapeutic agents, but because such evidence may be of value in disclosing new sources of already known biologically active compounds.

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A sunlight-induced method for rapid biosynthesis of silver nanoparticles using an Andrachnea chordifolia ethanol extract

Cited by 34 publications

References 16 publications

Green synthesis, characterization, enhanced functionality and biological evaluation of silver nanoparticles based on Coriander sativum

Green synthesis, characterization, enhanced functionality and biological evaluation of silver nanoparticles based on Coriander sativum

Biosynthesis of Silver Nanoparticles Using Taxus yunnanensis Callus and Their Antibacterial Activity and Cytotoxicity in Human Cancer Cells

Green Synthesis of Metal Nanoparticles for Antimicrobial Activity

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