Biosynthesis of silver nanoparticles using Alternanthera sessilis (Linn.) extract and their antimicrobial, antioxidant activities

Niraimathi, K. L.; Sudha, Veerappan; Lavanya, R.; Brindha, P.

doi:10.1016/j.colsurfb.2012.08.041

Cited by 264 publications

(129 citation statements)

References 16 publications

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“…Presence of impurities and melting point profile were screened by TG-DSC analyzer. AgNPs were synthesized from the silver nitrate through the reducing power of ascorbic acid present in A. sessilis leaves [129] .…”

Section: Recent Advances Of Bioenhancersmentioning

confidence: 99%

Bioavailability enhancers of herbal origin: An overview

Kesarwani

Gupta

2013

Asian Pacific Journal of Tropical Biomedicine

377

197

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Section: Recent Advances Of Bioenhancersmentioning

confidence: 99%

Bioavailability enhancers of herbal origin: An overview

Kesarwani

Gupta

2013

Asian Pacific Journal of Tropical Biomedicine

377

197

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“…7 displays the presence of silver in the sample, further confirming the presence of silver nanoparticles and also the presence of carbon and oxygen suggesting that the silver nanoparticles must be capped by the organic components present in the plant extract. AgNPs are established as antimicrobial agents, while the presence of plant bioorganic capping material upon the AgNPs enable them to exhibit enhanced antibacterial activity (MubarakAli et al 2011;Prabhu and Poulose 2012) and can be used as antioxidant agents (Niraimathi et al 2013). …”

Section: Conversion (%)mentioning

confidence: 99%

Synthesis of silver nanoparticles using medicinal Zizyphus xylopyrus bark extract

et al. 2014

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In the present paper, biosynthesis of silver nanoparticles using Zizyphus xylopyrus bark extract is reported. Z. xylopyrus bark extract is efficiently used for the biosynthesis of silver nanoparticles. UV-Visible spectroscopy showed surface plasmon resonance peaks in the range 413-420 nm confirming the formation of silver nanoparticles. Different factors affecting the synthesis of silver nanoparticles like methodology for the preparation of extract, concentration of silver nitrate solution used for biosynthesis and initial pH of the reaction mixture were studied. The extract prepared with 10 mM AgNO 3 solution by reflux extraction method at optimum initial pH of 11, resulted in higher conversion of silver ions to silver nanoparticles as compared with those prepared by open heating or ultrasonication. SEM analysis showed that the biosynthesized nanoparticles are spherical in nature and ranged from 60 to 70 nm in size. EDX suggested that the silver nanoparticles must be capped by the organic components present in the plant extract. This simple process for the biosynthesis of silver nanoparticles using aqueous extract of Z. xylopyrus is a green technology without the usage of hazardous and toxic solvents and chemicals and hence is environment friendly. The process has several advantages with reference to cost, compatibility for its application in medical and drug delivery, as well as for large-scale commercial production.

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“…Ag nanoparticles have been synthesised by different physical and chemical approaches viz., chemical reduction, microemulsion/reverse micelles, electrochemical reduction and photochemical reduction. Many biological approaches of green synthesis have been reported till date using plant leaf extracts from Alternanthera sessilis (Niraimathi et al 2013), Morinda citrifolia (Sathishkumar et al 2012), Mukia scabrella (Prabakar et al 2013), Iresine herbstii (Dipankar and Murugan 2012), Tribulus terrestris (Gopinath et al 2012), Azadirachta indica (Khan et al 2012), Cycas circinalis, Ficus amplissima, Commelina benghalensis, Lippia nodiflora (Johnson and Prabu 2015), Ocimum sanctum (Garima Singhal et al 2011) and Aloe vera (Medda et al 2014). Pedalium murex (P. murex) is a member of the sesame family, Pedaliaceae.…”

Section: Introductionmentioning

confidence: 99%

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

2015

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In this paper, an aqueous extract of fresh leaves of Pedalium murex was used for the synthesis of silver (Ag) nanoparticles. Different biological methods are gaining recognition for the production of silver nanoparticles (AgNPs) due to their multiple applications. The use of plants in the green synthesis of nanoparticles emerges as a cost-effective and eco-friendly approach. Characterization of nanoparticles was done using different methods, which include; ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR), powder X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), energy dispersive X-ray analysis (EDAX), fluorescence emission spectroscopy, transmission electron microscope (TEM), dynamic light scattering (DLS), zeta potential and antibacterial activity. UV-visible spectrum of the aqueous medium containing silver nanoparticles showed absorption peak at around 430 nm. Fourier transform infrared spectra had shown that the biomolecule compounds were responsible for the reduction and capping material of silver nanoparticles. XRD study showed the particles to be crystalline in nature, with a face-centered cubic (fcc) structure. The size and stability were detected using DLS and zeta potential analysis. The antibacterial activity of AgNPs against generally found bacteria was assessed to find their potential use in silver-containing antibacterial product.

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Biosynthesis of silver nanoparticles using Alternanthera sessilis (Linn.) extract and their antimicrobial, antioxidant activities

Cited by 264 publications

References 16 publications

Bioavailability enhancers of herbal origin: An overview

Bioavailability enhancers of herbal origin: An overview

Synthesis of silver nanoparticles using medicinal Zizyphus xylopyrus bark extract

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

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