Biosynthesis Of High Concentration, Stable Aqueous Dispersions Of Silver Nanoparticles Using Citrus Limon extract

Mohapatra, Bandita; Kaintura, Reena; Singh, Jaspal; Kuriakose, Sini; Mohapatra, Satyabrata

doi:10.5185/amlett.2015.5731

Cited by 27 publications

(9 citation statements)

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“…It is observed that the absorption peak intensity is lower for 0 min of reaction time, which confirms that less number of silver nanoparticles is formed in the reaction mixture. The absorption peak intensity gradually increases with increase in the reaction time from 0 min to 60 min for all the concentrations of papaya peel extract, which indicates an increase in the concentration of silver nanoparticles in the reaction mixture (Mohapatra et al, 2015). The highest absorption peak intensity is observed after 24 h of incubation from the initiation of the reaction, which indicates the complete formation of silver nanoparticles in all the reaction mixtures.…”

Section: Time Dependent Uv-visible Spectral Analysismentioning

confidence: 85%

“…It is observed that the synthesized silver nanoparticles are aggregated for the higher concentration of papaya peel extract. The aggregation of silver nanoparticles leads to destabilization of silver nanoparticles (Mohapatra, Kaintura, Singh, Kuriakose, & Mohapatra, 2015). Figure 4 shows the reaction mixture of silver nanoparticles after 24 h of incubation from the initiation of reaction at room temperature.…”

Section: Preparation Of Silver Nanoparticlesmentioning

confidence: 99%

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Carica papaya peel mediated synthesis of silver nanoparticles and its antibacterial activity against human pathogens

Balavijayalakshmi¹,

Ramalakshmi²

2017

Journal of Applied Research and Technology

123

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Metallic nanoparticles are traditionally synthesized by wet chemical techniques, in which the chemicals used are quite often toxic and flammable. Ripe carica papaya peel is found to be a suitable source for green synthesis of silver nanoparticles. In the present work, a cost effective and environmental friendly technique for the green synthesis of silver nanoparticles from 1 mM silver nitrate (AgNO 3) solution through the extract of ripe Carica papaya peel of various concentrations (5 ml, 10 ml, 15 ml, 20 ml, 25 ml) is described. The synthesized silver nanoparticles are characterized by using the UV-vis absorption spectroscopy, FT-IR, XRD, SEM and TEM. The formation of silver nanoparticles is confirmed by surface plasmon resonance, determined by UV-vis spectra at 400-435 nm. The shift in the absorption bands and variation in the calculated optical band gaps for the various concentrations of papaya peels extracts are also observed. The FT-IR spectra reveal that an increase in the concentration of the papaya peel extract shifts the bands to higher wavelengths. The average crystallite size for various concentrations of papaya peel extract is observed from XRD spectral analysis and is found to be around 16-20 nm, which is in good agreement with the TEM analysis. The SEM analysis shows the spherical structure of the silver nanoparticles with some agglomeration for higher concentrations of papaya peel extract. The synthesized silver nanoparticles show good antibacterial activity against human pathogens such as Escherichia coli and Staphylococcus aureus and it has many medical applications.

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Section: Time Dependent Uv-visible Spectral Analysismentioning

confidence: 85%

Section: Preparation Of Silver Nanoparticlesmentioning

confidence: 99%

Carica papaya peel mediated synthesis of silver nanoparticles and its antibacterial activity against human pathogens

Balavijayalakshmi¹,

Ramalakshmi²

2017

Journal of Applied Research and Technology

123

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“…In recent years, nanoparticle synthesis has received great attention owing to their unequalled properties and potential applications [1]. Silver nanoparticles have been synthesized by diverse physical and chemical methods [2]. When the physical methods are costly, chemical methods utilize toxic and hazardous chemicals which constitute significant threat to the environment and the synthesized silver nanoparticles can have reverse effects in biomedical applications due to the toxic chemicals adsorbed on their surface.…”

Section: Introductionmentioning

confidence: 99%

Limon Yaprakları Ekstraktından Ag Nanopartiküllerin Biyosentezi ve Karakterizasyonu

Serdar¹,

Albay²,

Sökmen³

2019

Cumhuriyet Science Journal

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The synthesis and characterization of Ag nanoparticles from Citrus limonum (lemon leaves) collected the Eastern Black Sea region was investigated in this study. A household microwave system device was used for microwave extraction of lemon leaves samples. The extract was prepared by taking 10g of dried lemon leaves. 10 g of sample was shaken in 100 mL of water for 90 min and extracted in a household microwave device at 4 minutes, 600 W. Ag nanoparticles were synthesized that the obtained aqueous solution was taken in different volumes by mixing 1 mM and 5mM AgNO3 solution. The colloid solution was subjected to microwave in an oven 1, 3, 5, 10, 15, 20 and 30 minutes at 90, 180, 360 W. Then production of AgNPs, the mixture was watched by UV-Vis spectroscopy (Shimadzu UVP-1240 spectrophotometer) measurements at different wavelengths (300-800 nm) for SPR of silver nanoparticles. The transition from yellow to a dark brown, shows the synthesis of silver nanoparticles.

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“…As an example, it's better-known that tea leaf extract contains powerful antioxidants like polyphenols, which is a regular drink offers necessary health benefits [8]. Table 1 shows some of the recently reported literature on the synthesis of AgNPs using plant extracts such as Setaria italic husk, Grewiaflaviscences, Saccharomyces cerevisiae, Citrus lemon, Parkia speciosa Hassk, Acalypha hispida, Descurainia sophia, P. nigrum (Black pepper) leaves, Belgian endive, Cassia auriculata and flower extract, Nelumbonucifera, Alpiniakatsumadai seeds extract, Tamarind fruit extract etc., [9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Phytochemical Mediated Synthesis of Silver Nanoparticles using Musa paradisiaca Peduncle Latex and Its Photocatalytic and Antimicrobial Activity

Venkataramana¹,

Sankar²,

Saikumar³

et al. 2018

JNST

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In the present work, green synthesis of silver nanoparticles (AgNPs) using a natural phytochemical agent has been described. The aqueous latex from Musa paradisiaca peduncle has been utilized as reducing as well as stabilizing agent. The formation of AgNPs was optimized by varying latex and AgNO3 concentrations and finally reaction time. Ultraviolet-visible spectroscopic analysis showed the surface plasmon resonance peak between 350 and 450 nm confirms the formation of silver nanoparticles. X-ray powder diffraction analysis revealed the crystalline nature of AgNPs, Fourier transform infrared spectroscopy analysis revealed that AgNPs were stabilized by polyphenols and other aromatics present in the Musa Paradisiaca peduncle latex, while X-ray energy dispersive spectroscopy confirms the metallic nature. The field emission scanning electron microscopy and high resolution transmission electron microscopy showed the spherical shape of the particles and size distribution of AgNPs measured by dynamic light scattering which are in the range of 40 to 50 nm. The synthesized AgNPs showed photocatalytic activity on the degradation / removal of the methylene blue dye and the antimicrobial activity against Pseudomonas aeruginosa, Staphylococcus aureus and Klebseilla bacterial species.

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Biosynthesis Of High Concentration, Stable Aqueous Dispersions Of Silver Nanoparticles Using Citrus Limon extract

Cited by 27 publications

References 0 publications

Carica papaya peel mediated synthesis of silver nanoparticles and its antibacterial activity against human pathogens

Carica papaya peel mediated synthesis of silver nanoparticles and its antibacterial activity against human pathogens

Limon Yaprakları Ekstraktından Ag Nanopartiküllerin Biyosentezi ve Karakterizasyonu

Phytochemical Mediated Synthesis of Silver Nanoparticles using Musa paradisiaca Peduncle Latex and Its Photocatalytic and Antimicrobial Activity

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