Synthesis of silver nanoparticles through green approach using Dioscorea alata and their characterization on antibacterial activities and optical limiting behavior

Pugazhendhi, S.; Sathya, P.; Palanisamy, P. K.; Gopalakrishnan, R.

doi:10.1016/j.jphotobiol.2016.03.043

Cited by 53 publications

(21 citation statements)

References 24 publications

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“…Bragg's reflection (111) showed high intensity relative to the other reflection, indicating the presence of Ag nanocrystals since these peaks are mainly oriented along (111) plane (Pal et al 2007;Otari et al 2014). The XRD patterns obtained are consistent with earlier studies (Velmurugan et al 2015;Pugazhendhi et al 2016). In Fig.…”

Section: Xrd Analysissupporting

confidence: 91%

“…7b). Similar types of structures were also observed in case of other studies (Niraimathi et al 2013;Otari et al 2014;Pugazhendhi et al 2016). The OPEAgNPs showed sizes ranging from 5 to 25 nm in diameter.…”

Section: Hr-tem Analysissupporting

confidence: 87%

“…There was no peak located around 560 nm, indicating the absence of nanoparticle aggregation (Kora et al 2010;Velmurugan et al 2015). Similar SPR was observed for AgNPs synthesized using the aqueous extract of Prunus yedoensis (Velmurugan et al 2015), Clerodendrum phlomidis (Sriranjani et al 2016), and Dioscorea alata (Pugazhendhi et al 2016). The stability of the OPE-AgNPs synthesized under the optimized condition was analyzed by storing the samples at a temperature of ∼30°C for 6 months.…”

Section: Uv-vis Spectroscopy and Stability Studiessupporting

confidence: 70%

“…1c). This increase in absorbance could be incubation temperature, c AgNO 3 concentration, and d PE/AgNO 3 ratio caused due to enhanced oxidation of hydroxyl groups by metal ions (Kanchi et al 2014;Pugazhendhi et al 2016). In our results, it was observed that after 2 mM concentration, OPEAgNPs synthesis was not found to be significant.…”

Section: Resultsmentioning

confidence: 99%

“…In particular, silver nanoparticles (AgNPs) have been widely exploited in medical and other scientific fields due to their wide excellent physical, chemical, and antimicrobial properties (Mittal et al 2013;Pugazhendhi et al 2016). Several conventional methods for synthesis of AgNPs, such as chemical, electrochemical, radiation, photochemical, and Langmuir-Blodgett methods, have been reported (Sankar et al 2013;Devanesan et al 2016).…”

mentioning

confidence: 99%

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Exploiting fruit byproducts for eco-friendly nanosynthesis: Citrus × clementina peel extract mediated fabrication of silver nanoparticles with high efficacy against microbial pathogens and rat glial tumor C6 cells

Saratale

Shin

Kumar

et al. 2017

Environ Sci Pollut Res

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Process byproducts from the fruit industry may represent a cheap and reliable source of green reducing agents to be used in current bio-nanosynthesis. This study reports the use of orange (Citrus × clementina) peel aqueous extract (OPE) for one-pot green synthesis of silver nanoparticles (AgNPs) with high effectiveness against various microbial pathogens as well as rat glial tumor C6 cells. The effects of various operational parameters on the synthesis of AgNPs were systematically investigated. The morphology, particle size, and properties of synthesized AgNPs were characterized using UV-visible spectroscopy, x-ray diffraction, x-ray photoelectron spectroscopy, field emission scanning electron microscopy, energy-dispersive x-ray spectroscopy, and Fourier transform infrared spectroscopy. High-resolution transmission electron microscopy shows that the nanoparticles are mostly spherical in shape and monodispersed, with an average particle size of 15-20 nm. Notably, the OPE-synthesized AgNPs were stable up to 6 months without change in their properties. Low doses of OPE-AgNPs inhibited the growth of human pathogens Escherichia coli, Bacillus cereus, and Staphylococcus aureus. The minimum inhibitory concentration and minimum bactericidal concentration of AgNPs against selected pathogenic bacteria were determined. OPE-AgNPs exhibited strong antioxidant activity in terms of ABTS (2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)) radical scavenging (IC 49.6 μg/mL) and DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging (IC 63.4 μg/mL). OPE-AgNPs showed dose-dependent response against rat glial tumor C6 cells (LD 60 μg/mL) showing a promising potential as anticancer agents. Overall, the current investigation highlighted a cheap green technology route to synthesize AgNPs using OPE byproducts and could potentially be utilized in biomedical, cosmetic, and pharmaceutical industry.

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