Green synthesis of silver nanoparticles from the extract of the inflorescence of Cocos nucifera (Family: Arecaceae) for enhanced antibacterial activity

Mariselvam, R.; Ranjitsingh, A. J. A.; Nanthini, A. Usha Raja; Kalirajan, Kaliappa; Padmalatha, C.; Selvakumar, P. Mosae

doi:10.1016/j.saa.2014.03.066

Cited by 238 publications

(122 citation statements)

References 14 publications

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“…Green synthesis is preferred over conventional synthesis because it is ecofriendly, cost-effective, single-step method that can be easily scaled up for large scale synthesis and does not require high pressure, temperature, energy and toxic chemicals (Saha et al 2017). Many researchers have reported the use of materials such as plant leaf extract, root, stem, bark, leaf, fruit, bud and latex (Mariselvam et al 2014), fungi (Bhainsa 2006), bacteria (Saifuddin et al 2009) and enzymes (Willner et al 2007) for the synthesis of silver nano-particles. A lot of work has been done on green synthesis of silver nano-particles using microorganisms including bacteria, fungi and plants because of their antioxidant properties capable of reducing metal compounds in their respective nanoparticle.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Azadirachta indica leaf extract and its antimicrobial study

et al. 2017

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In this study, green synthesis of silver nanoparticles was done using leaf extracts of Azadirachta indica. The flavonoids and terpenoids present in the extract act as both reducing and capping agent. Microbes (Escherichia coli and Gram-positive bacteria) were isolated from borewell water using selective media. The silver nanoparticles showed antimicrobial activities against Gram-positive bacteria and E. coli. However the silver nanoparticles were more effective against E. coli as compared to Gram-positive bacteria. Various techniques were used to characterize synthesized silver nanoparticles such as DLS and UVvisible spectrophotometer. The absorbance peak was in the range of 420-450 nm, that varied depending upon the variation in the concentration of neem extract. This is a very rapid and cost-effective method for generation of silver nanoparticle at room temperature, however, its exact dose in water purification has to be determined.

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Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Azadirachta indica leaf extract and its antimicrobial study

et al. 2017

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“…Other plants' extract which have been reported to be used for the synthesis of AgNPs are tea extract [7], inflorescence of Cocous nucifera [8], peel of Citrus sinensis [9], peel of Musa paradisiacal [10], leaves of Carica papaya [11], fruit of Vitis vinifera [12] and many other. In this work, a native Indonesian plant, rambutan (Nepphelium lappaceum) peel extract was used to synthesize AgNPs.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticle using rambutan (Nephelium lappaceum L.) peel extract and its antibacterial activity against Salmonella parathypi A.

2018

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Abstract. Ag nanoparticles (AgNPs) have been synthesized via green method using rambutan (Nephelium lappaceum L.) peel (RP) extract. RP extract was prepared by washing the RP using tap water thoroughly and boiling it in distilled water at 70°C for 60 min. RP extract and AgNO3 were used as the starting materials for the synthesis of AgNPs. RP extract was added to 10 -3 M AgNO3 solution with a ratio by volume of 1:10 (RP : AgNO3), stirred at room temperature. The solution's color changes from reddish to dark brown, indicating the reduction of Ag + in the solution. The synthesized AgNPs were characterized using UV-Visible Spectrophotometer, FTIR Spectrophotometer, and Scanning Electron Microscopy-Energy-dispersive X-ray Spectroscopy (SEM-EDS) instruments. UV-Visible spectra show that the AgNPs have the maximum absorption band at 450 nm which is typical for AgNPs. The FTIR spectra revealed that the protein in RP extract acts as the capping agent for the synthesized AgNPs. The synthesized AgNPs were tested for their antibacterial activity against Salmonella parathypi A. The antibacterial test shows that 50 µL of AgNPs resulted in the inhibition zone of 4 mm against the aforementioned microorganism.

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“…There are many ways of production of silver nanoparticles among which green synthesis or synthesis using plant extracts is the most easy, economic and less time and energy consuming technique. The green synthesis can be done using many plant parts -leaf, seeds [Dhand et al, 2016], barks [Ahmad, 2009], buds, peels [Saeed et al, 2010], mesocarps [Mariselvam et al, 2014], roots, tubers [Sadhegi et al, 2015], fruits [Moghaddam et al, 2014] and even flowers [Senthilkumaar et al, 2006]. Experiments were performed by many scientists, researchers, universities and laboratories on the green synthesis of various metal nanocomposites like silver (Ag), gold (Au) [Patra et al, 2015], copper (Cu), Nickel (Ni), Chromium (Cr) [Hossain et al, 2005] etc from various plant parts viz -Croton sparsiflorus morong leaf extract [Kathiravan et al, 2015], Alternanthera dentata leaf extract [Kumar et al, 2014], Azadirachta indica leaf extract [Satapathy et al, 2013], Ocimum sanctcum leaf extract [Pandian et al, 2015], Eucalyptus oleosa leaf extract [Pourmortazavi et al,2015], Artocarpus heterophyllus (jackfruit) leaf extract [Saha et al, 2012], Eucalyptus chapmaniana leaf extract [Sulaiman et al, 2013], Ulva lactuca (seaweed) [Kumar et al, 2013] etc but comparative studies checking the effectiveness of a better adsorbent are very few.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver – Soil Nanocomposite from Two Different Sources and Its Application for the Removal of Dye Solution

Moumita¹,

Das²,

Siddhartha³

2016

EPP

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Abstract. In this paper a comparative study had been performed by green synthesis of silver nanocomposites using neem leaf extract (Azadirachta indica) and basil leaf extract (Ocimum sanctum). The green synthesis of silver nanocomposites (soil-AgNP) was used since it is efficient as well as cost effective. The nanocomposites were characterized by color change, UV-VIS Spectroscopy, XRD (X-Ray Diffraction Analysis), SEM (Scanning Electron Microscopic Analysis), FTIR (Fourier Transform Infrared Spectroscopic Analysis) and TEM (Transmission Electron Microscopic Analysis). Change in the color of the solution of leaf extract and silver nitrate to dark brown corresponds to the Plasmon absorbance of the silver nanoparticles. The SEM, TEM and FTIR studies also confirmed the formation of silver nanocomposites. Various experiments were carried out by varying the properties like adsorbent dose, time, temperature, shaker speed, pH and concentration. Adsorption isotherms, thermodynamics and kinetics were also evaluated. It was noticed that the silver nanocomposite from basil leaf was providing around 98% removal of Gentian Violet dye which was relatively higher than both neem leaf composite as well as soil.

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Green synthesis of silver nanoparticles from the extract of the inflorescence of Cocos nucifera (Family: Arecaceae) for enhanced antibacterial activity

Cited by 238 publications

References 14 publications

Green synthesis of silver nanoparticles using Azadirachta indica leaf extract and its antimicrobial study

Green synthesis of silver nanoparticles using Azadirachta indica leaf extract and its antimicrobial study

Green synthesis of silver nanoparticle using rambutan (Nephelium lappaceum L.) peel extract and its antibacterial activity against Salmonella parathypi A.

Green Synthesis of Silver – Soil Nanocomposite from Two Different Sources and Its Application for the Removal of Dye Solution

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