Bio-synthesis and characterization of silver nanoparticles using Terminalia chebula leaf extract and evaluation of its antimicrobial potential

Espenti, Chandra Sekhar; Rao, K.S.V. Krishna; Rao, Kummara Madhusudana

doi:10.1016/j.matlet.2016.03.106

Cited by 84 publications

(33 citation statements)

References 13 publications

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“…Anandalakshmi et al synthesize AgNPs using aqueous leaves extract of plant Pedalium murex, characterized them and investigate their antibacterial activity and concluded that green synthesis is eco-friendly and produce AgNPs that have a potential antibacterial effect against S. aureus, P. aeruginosa, E. coli, Mariniluteicoccus flavus, Bacillus subtilis, and Bacillus pumilus [55]. Likewise, Espenti et al explored antimicrobial effects of biogenic nanoparticles by (chebula Retz, Myrobalan), and investigated its antimicrobial activity against Bacillus subtilis and E. coli and resulted that AgNPs have greater antimicrobial activity than aqueous leaves extract of the plant [56]. Like our experimental results, it is mentioned in the literature that increased concentration of AgNPs formed by the application of medicinal plants, increase the percentage inhibition of biofilm [57,58].…”

Section: Discussionmentioning

confidence: 99%

Flacourtia indica based biogenic nanoparticles: development, characterization, and bioactivity against wound associated pathogens

Ahmad

Taj

Ramzan

et al. 2020

Mater. Res. Express

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Surface engineered nanoparticles (NPs) are of great attention due to their targeted medical applications. The nature of the functionalized surface plays a vital role in achieving the required functionalities of engineered NPs. Owing to the biofilm formation capabilities of wound associated pathogens, impaired wound healing is a major complication in the medical field. In this context, herein, we report the biogenic synthesis of Flacourtia indica (FI) based NPs, i.e., FI-AgNPs using the aqueous leaf extract of this anti-bacterial herb. The newly developed FI-AgNPs were characterized using various analytical and imaging techniques such as UV-Vis spectroscopy, Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The FI-AgNPs showed potent anti-microbial activity and anti-biofilm potential which were examined through a test tube adherence method and congo red agar method. It has been observed that synthesized FI-AgNPs inhibit the formation of a biofilm of observed bacteria, even at a minimum concentration of 80 μgml −1 . These findings suggest that synthesized FI-AgNPs could be used against wound associated microbes, especially bacterial coating on medical devices, to prevent antibiotic-resistant biofilm infections. Further development and research are obligatory to decode this skill into preventive and therapeutic strategies.

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Section: Discussionmentioning

confidence: 99%

Flacourtia indica based biogenic nanoparticles: development, characterization, and bioactivity against wound associated pathogens

Ahmad

Taj

Ramzan

et al. 2020

Mater. Res. Express

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“…Plasmonic metal nanoparticles, such as silver (AgNps) and gold (AuNps), are excellent biosensors and drug delivery agents owing to their remarkable optical and surface functionalization properties [5]. Until now, AgNps and AuNps have been synthesized by various medicinal plant extracts such as Panax ginseng Meyer [6–8], Dendropanax mobifera Léveillé [9], Tamarix gallica [10], and Terminalia chebula [11]. …”

Section: Introductionmentioning

confidence: 99%

Biosynthesis, Characterization, and Bioactivities Evaluation of Silver and Gold Nanoparticles Mediated by the Roots of Chinese Herbal Angelica pubescens Maxim

et al. 2017

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A facile synthesis and biological applications of silver (DH-AgNps) and gold nanoparticles (DH-AuNps) mediated by the aqueous extract of Angelicae Pubescentis Radix (Du Huo) are explored. Du Huo is a medicinal root belonging to Angelica pubescens Maxim which possesses anti-inflammatory, analgesic, and antioxidant properties. The absorption spectra of nanoparticles in varying root extract and metal ion concentration, pH, reaction temperatures, and time were recorded by ultraviolet–visible (UV-Vis) spectroscopy. The presence of DH-AgNps and DH-AuNps was confirmed from the surface plasmon resonance intensified at ~414 and ~540 nm, respectively. Field emission transmission electron micrograph (FE-TEM) analysis revealed the formation of quasi-spherical DH-AgNps and spherical icosahedral DH-AuNps. These novel DH-AgNps and DH-AuNps maintained an average crystallite size of 12.48 and 7.44 nm, respectively. The biosynthesized DH-AgNps and DH-AuNps exhibited antioxidant activity against 2,2-diphenyl-1-picrylhydrzyl (DPPH) radicals and the former exhibited antimicrobial activity against clinical pathogens including Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Salmonella enterica. The expected presence of flavonoids, sesquiterpenes, and phenols on the nanoparticle surface were conjectured to grant protection against aggregation and free radical scavenging activity. DH-AgNps and DH-AuNps were further investigated for their cytotoxic properties in RAW264.7 macrophages for their potential application as drug carriers to sites of inflammation. In conclusion, this green synthesis is favorable for the advancement of plant mediated nano-carriers in drug delivery systems, cancer diagnostic, and medical imaging.Graphical abstractSchematic diagram of biosynthesis of DH-AgNps and DH-AuNps and evaluation of their bioactivities.

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“…Among them, plant leaf extract mediated biological process has attracted much attention due to the simple and inexpensive protocol [9][10][11][12]. In addition, the proteins or polysaccharides or secondary metabolites found in leaf extracts can reduce the Ag + ions to Ag 0 state and form silver nanoparticles [1].…”

Section: Introductionmentioning

confidence: 99%

Rapid Biological Synthesis of Silver Nanoparticles from Ocimum sanctum and Their Characterization

Khan

Tarek

Nuzat

et al. 2017

Journal of Nanoscience

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With development of nanotechnology, the biological synthesis process deals with the synthesis, characterization, and manipulation of materials and further development at nanoscale which is the most cost-effective and eco-friendly and rapid synthesis process as compared to physical and chemical process. In this research silver nanoparticles (AgNPs) were synthesized from silver nitrate (AgNO 3 ) aqueous solution through eco-friendly plant leaf broth of Ocimum sanctum as reactant as well as capping agent and stabilizer. The formation of AgNPs was monitored by ultraviolet-visible spectrometer (UV-vis) and Fourier transform infrared (FTIR) spectroscopy. X-ray diffraction (XRD) and scanning electronic microscopy (SEM) have been used to characterize the morphology of prepared AgNPs. The peaks in XRD pattern are in good agreement with that of face-centered-cubic (FCC) form of metallic silver. Thermal gravimetric analysis/differential thermal analysis (TGA/DTA) results confirmed the weight loss and the exothermic reaction due to desorption of chemisorbed water. The average grain size of silver nanoparticles is found to be 29 nm. The FTIR results indicated that the leaf broths containing the carboxyl, hydroxyl, and amine groups are mainly involved in fabrication of silver AgNPs and proteins, which have amine groups responsible for stabilizing AgNPs in the solution.

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Bio-synthesis and characterization of silver nanoparticles using Terminalia chebula leaf extract and evaluation of its antimicrobial potential

Cited by 84 publications

References 13 publications

Flacourtia indica based biogenic nanoparticles: development, characterization, and bioactivity against wound associated pathogens

Flacourtia indica based biogenic nanoparticles: development, characterization, and bioactivity against wound associated pathogens

Biosynthesis, Characterization, and Bioactivities Evaluation of Silver and Gold Nanoparticles Mediated by the Roots of Chinese Herbal Angelica pubescens Maxim

Rapid Biological Synthesis of Silver Nanoparticles from Ocimum sanctum and Their Characterization

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