Rapid green synthesis of gold nanoparticles using Rosa hybrida petal extract at room temperature

Noruzi, Masumeh; Zare, Davood; Khoshnevisan, Kamyar; Davoodi, Daryoush

doi:10.1016/j.saa.2011.05.001

Cited by 267 publications

(100 citation statements)

References 20 publications

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“…It is well known that the shape of metallic nanoparticles considerably changed their optical and electronic properties as reported earlier by [35,36] Shipway et al, (2000); Nie and Emory (1997). When compared to the previous reports of [37,38] Noruzi et al, and Raghunandan et al, states that the algal-mediated silver nanoparticle shape varies as spherical triangle, and pseudospherical [35][36][37][38]. The coating material is believed to be a bioorganic component of S. fusiformis.…”

Section: Discussionmentioning

confidence: 76%

Green Synthesis, Characterization of Silver Nanoparticles of a Marine Red Alga Spyridia Fusiformis and Their Antibacterial Activity

Murugesan¹,

Bhuvaneswari²,

Sivamurugan³

2017

Int J Pharm Pharm Sci

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Objective: In the present system, the green synthesis of silver nanoparticles using marine the red alga Spyridia fusiformis and antibacterial activity was carried out. Methods:The seaweed extract was used for the synthesis of AgNPs Results:The UV-visible spectroscopy revealed surface plasmon resonance at 450 nm. The FT-IR measurements showed the possible functional groups responsible for the formation of nanoparticles. The X-ray diffraction analysis showed that the particles were crystalline in nature. TEM micrograph has shown the formation of silver nanoparticles with the size in the range of 5-50 nm. The silver nanoparticles synthesized from the S. fusiformis showed higher activity and proved their efficacy in controlling the pathogenic bacterial strains. The nanoparticles showed highest inhibition activity on K. pneumaniae and S. aureus up to 26 and 24±0.01 mm at 100 μg/ml of nanoparticles.at room temperature. The silver nanoparticles were characterized by using UVVisible spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscope and X-ray diffraction (XRD) techniques. The antibacterial activity of biosynthesized silver nanoparticles was carried out by disc diffusion method against pathogenic bacteria. Conclusion:The synthesised AgNPs have shown the best antibacterial activity against human pathogens Keywords: Antibacterial activity, Green synthesis, Marine algae, Silver nanoparticles, Spyridia fusiformis E. coli, K. pneumoniae, S. aureus and P. aeruginosa. The above eco-friendly AgNPs synthesis procedure could be a viable solution for industrial applications in the future and therapeutic needs.

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Section: Discussionmentioning

confidence: 76%

Green Synthesis, Characterization of Silver Nanoparticles of a Marine Red Alga Spyridia Fusiformis and Their Antibacterial Activity

Murugesan¹,

Bhuvaneswari²,

Sivamurugan³

2017

Int J Pharm Pharm Sci

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“…These green methods are low cost, fast, efficient and generally lead to the formation of crystalline nanoparticles with a variety of shapes (spheres, rods, prisms, plates, needles, leafs or dendrites), with sizes between 1 and 100 nm. These features mainly mixing of plant extract and metal salt(s) [10]. The stability of produced nanoparticles can in some cases change after a few days or the nano-particles can remain stable over long periods [11].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of silver nanoparticles produced using Arbutus Unedo leaf extract

et al. 2012

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Metallic nanoparticles have received great attention from chemists, physicists, biologists and engineers who wish to use them for the development of a new generation of nanodevices. In the present study silver nano-particles were synthesized from aqueous silver nitrate through a simple and eco-friendly route using leaf broth of Arbutus unedo, which acted as a reductant and stabilizer simultaneously. The aqueous silver ions when exposed to the leaf broth were reduced and stabilized over long periods of time resulting in the green synthesis of surface functionalized silver nanoparticles. The bio-reduced silver nanoparticles were appropriately characterized. The results revealed the formation of single crystalline Ag nanoparticles with a nar-row size distribution for each sample. The particles, although discrete, were predominately coated with the organic leaf extract forming small aggregates, which makes them stable over long time periods and highly appropriate for coatings or biotechnology applications.

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“…Noruzi et al and Kalpana et al suggested that synthesis of Au NPs using Rosa hybrid petal extract in the presence of protein act as the reducing and stabilizing agent [49,50]. The carboxylic group and hydroxyl group are also responsible for reduction of silver ion into silver nanoparticles.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Green Synthesis and Characterization of Silver Nanoparticles Using Vitex negundo (Karu Nochchi) Leaf Extract and its Antibacterial Activity

alakshmi¹,

Venugobal²

2017

Med chem

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The present paper focuses on the synthesis of silver nanoparticles using with different leaf extract concentrations of Vitex negundo. The biosynthesized nanoparticles were characterized by UV-vis absorption spectrophotometry, fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray, atomic force microscopy, transmission electron microscopy, photoluminescence and zeta potential techniques. The formation of silver nanoparticles was confirmed by the surface plasmon resonance absorption peak at 423 nm in UV-vis absorption spectra of the synthesized silver nanoparticles. The fourier transform infrared spectroscopy indicates flavonoids as a potential reduced agents. Field emission scanning electron microscopy shows the synthesized silver nanoparticles are in spherical shape. Energy dispersive X-ray spectroscopy shows the strong peak belongs to silver, and it confirms the formation of Ag NPs. X-ray diffraction spectra of synthesized silver nanoparticles exhibit they are in face centered cubic crystalline structure. The photoluminescence spectra of synthesized silver nanoparticles show their emission peak at 489-481 nm and the emission intensity is proportional to the different concentrations of leaf extract. The spherical shaped silver nanoparticles are observed by atomic force microscopy technique. The zeta potential value is observed at -13.5 mV, which shows the synthesized silver nanoparticles are incipient instability. The antimicrobial activity of the synthesized nanoparticles is studied using the disc diffusion method, which indicates that both Gram positive and Gram negative microorganisms have been affected by the silver nanoparticles. The observed antibacterial activity could be find important applications in medicine, biology and industry.

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Rapid green synthesis of gold nanoparticles using Rosa hybrida petal extract at room temperature

Cited by 267 publications

References 20 publications

Green Synthesis, Characterization of Silver Nanoparticles of a Marine Red Alga Spyridia Fusiformis and Their Antibacterial Activity

Green Synthesis, Characterization of Silver Nanoparticles of a Marine Red Alga Spyridia Fusiformis and Their Antibacterial Activity

Green synthesis and characterization of silver nanoparticles produced using Arbutus Unedo leaf extract

Green Synthesis and Characterization of Silver Nanoparticles Using Vitex negundo (Karu Nochchi) Leaf Extract and its Antibacterial Activity

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