Synthesis, characterization, and biological activity of silver nanoparticles synthesized from Aristolochia bracteolata lam.

Sreeharsha, Nagaraja; Govindarajan, Kathiravan; Rajagopal, K.; Rajasekar, Arvindganth; B, Rajangam; Al‐Dhubiab, Bandar E.; Narayanaswamy, V. B.; Attimarad, Mahesh; Nair, Anroop B.; Karnathi, Rajith Kumar; Meravanige, Girish; Chandur, Uma; Roopashree, T. S.; Haroun, Michelyne; Tratrat, Christophe

doi:10.4103/pm.pm_313_20

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…Also, considerable studies have been carried out on silver NPs elucidating their role as promising antimicrobial, antibacterial, antioxidant, anticancer agents. [36][37][38][39][40][41][42] In the current study, hydro alcoholic extract of Hygrophila auriculata whole plant successfully reduced silver ions to silver nanoparticles with minimum utilization of reactants and energy. The primary indicator of completion of reduction of silver ions is change in color from colorless to yellowish brown to brown.…”

Section: Discussionmentioning

confidence: 99%

Green-synthesis of Silver Nanoparticles by Hygrophila auriculata Extract: Innovative Technique and Comprehensive Evaluation

Nayak¹,

Ghugare²,

Vaidhun³

2021

IJPER

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Background: Metal nanoparticles are of great scientific interest as they bridge the gap between the bulk and atomic structures. A number of methods of synthesizing nanoparticles have been developed and can be grouped into top-down (physical), bottom-up (chemical) and biological methods. Physical methods are expensive due to continuous consumption of energy to maintain the high pressure and temperature employed in nanoparticle synthesis and requires highly sophisticated equipment. In the chemical synthesis of nanoparticles, generation of hazardous by-products as well as involvement of certain chemicals that are environmental contaminants is a major concern. As against this plant-mediated synthesis of nanoparticles employs green synthetic route, is clean, ecofriendly, cost effective, safe, convenient and beneficial technique for large-scale production of nanoparticles. Aim: The study focuses on green synthesis of silver nanoparticles using plant extract as reducing, capping and stabilizing agents. It has been reported that aqueous silver ions when exposed to plant leaf extract undergo reduction leading to formation of silver nanoparticles. Methods: In present study, silver nanoparticles were synthesized by using hydro alcoholic extract of Hygrophila auriculata whole plant as reducing agent. Results: Synthesis of silver nanoparticles was confirmed by UV spectroscopy, particle size analysis, zeta potential determination, Fourier Transform Infrared Resonance, X-Ray Diffraction, Scanning Electron Microscopy and Transmission Electron Microscopy. Conclusion: Plant mediated nanoparticle synthesis is a simple, reproducible and ecofriendly method for elucidation of silver nanoparticles. Data obtained reveals the role of hydro alcoholic extract of Hygrophila auriculata in silver nanoparticle synthesis.

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Section: Discussionmentioning

confidence: 99%

Green-synthesis of Silver Nanoparticles by Hygrophila auriculata Extract: Innovative Technique and Comprehensive Evaluation

Nayak¹,

Ghugare²,

Vaidhun³

2021

IJPER

View full text Add to dashboard Cite

show abstract

“…This can be easily eliminated using a green process; therefore, green processes of nanoparticle synthesis should be developed. Green synthesis is an environmentally friendly alternative to chemical synthesis [15] and can be developed on a large scale, more advanced than chemical synthesis [16,17]. The ability of plants to synthesize nanoparticles in non-aseptic circumstances makes them an attractive option.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver Nanoparticles from Fermented Bush Tea (Athrixia phylicoides DC) Leaf Extract and Evaluation of Their Antioxidant and Antimicrobial Properties

Mashau,

Mamagau,

Foforane

et al. 2023

Fermentation

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Green synthesis is a promising strategy for producing eco-friendly, non-toxic, and less expensive metallic nanoparticles from plants and microorganisms. This research synthesized silver nanoparticles (AgNPs) from fermented leaf extract of bush tea (Athrixia phylicoides DC). The physicochemical characterization of AgNPs was conducted by UV-vis spectroscopy, Fourier Transform Infrared Spectrometry (FTIR), and Differential Scanning Calorimetry (DSC). In addition, the total phenolic and flavonoid contents, antioxidant and antimicrobial activities of AgNPs were evaluated. The results indicated the successful formation of AgNPs by a visual change of color in fermented bush tea leaf extract from black to brown and in unfermented bush tea leaf crude extract from dark brown to light brown. The UV-vis spectrum of the reaction of the mixture of synthesized AgNPs with unfermented and fermented bush tea showed maximum absorbance at 457 nm and 450 nm, which confirmed the formation of AgNPs. FTIR revealed the functional groups of a leaf extract from bush tea that contributed to the reduction and capping process. The thermal properties suggest that low thermal stable compounds contributed to the reduction of Ag+ to Ag° in the phyto compounds found in the extract. The total phenolic content was higher in fermented AgNPs (290.44 mg/g GAE) compared to unfermented AgNPs (171.34 mg/g GAE). On the other hand, the total flavonoid content was higher in unfermented AgNPs (17.87 mg/g CE) than in fermented AgNPs (9.98 mg/g CE). Regarding antioxidant activity values, unfermented AgNPs had the highest FRAP (535.30 TE/mL) and 47.58% for DPPH. Fermented AgNPs had more antimicrobial activity than unfermented AgNPs. The results show that bush tea leaf extract can be used in different industries such as food, cosmetics, and biomedical.

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“…Numerous chemical, physical and biological methods have been used in the synthesis of NPs. Biochemical methods used for the synthesis of metallic NPs were considered to be economic and safe [13,14]. A wide range of biomacromolecules have been explored in the preparation of nanomaterials, where these agents acted as potential biocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Gold, Iron and Selenium Nanoparticles Using Phytoconstituents: Preliminary Evaluation of Antioxidant and Biocompatibility Potential

et al. 2022

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This study aimed at fabricating gold (Au), iron (Fe) and selenium (Se) nanoparticles (NPs) using various natural plant extracts from the Fertile Crescent area and evaluating their potential application as antioxidant and biocompatible agents to be used in the pharmaceutical field, especially in drug delivery. The Au-NPs were synthesized using Ephedra alata and Pistacia lentiscus extracts, whereas the Fe-NPs and Se-NPs were synthesized using peel, fruit and seed extracts of Punica granatum. The phytofabricated NPs were characterized by the UV-visible spectroscopy, scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction (XRD) and energy-dispersive X-ray (EDS) spectroscopy. Scanning electron microscope technique showed that the synthesized NPs surface was spherical, and the particle size analysis confirmed a particle size of 50 nm. The crystalline nature of the NPs was confirmed by the XRD analysis. All synthesized NPs were found to be biocompatible in the fibroblast and human erythroleukemic cell lines. Se-NPs showed a dose-dependent antitumor activity as evidenced from the experimental results with breast cancer (MCF-7) cells. A dose-dependent, free-radical scavenging effect of the Au-NPs and Se-NPs was observed in the DPPH (2,2-Diphenyl-1-picrylhydrazyl) assay, with the highest effect recorded for Au-NPs.

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Synthesis, characterization, and biological activity of silver nanoparticles synthesized from Aristolochia bracteolata lam.

Cited by 6 publications

References 24 publications

Green-synthesis of Silver Nanoparticles by Hygrophila auriculata Extract: Innovative Technique and Comprehensive Evaluation

Green-synthesis of Silver Nanoparticles by Hygrophila auriculata Extract: Innovative Technique and Comprehensive Evaluation

Biosynthesis of Silver Nanoparticles from Fermented Bush Tea (Athrixia phylicoides DC) Leaf Extract and Evaluation of Their Antioxidant and Antimicrobial Properties

Green Synthesis of Gold, Iron and Selenium Nanoparticles Using Phytoconstituents: Preliminary Evaluation of Antioxidant and Biocompatibility Potential

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