Synthesis of Silver Nanoparticles Using Odontosoria chinensis (L.) J. Sm. and Evaluation of their Biological Potentials

Johnson, M; Thangaiah, Shibila; Agilan, S.; Menezes, Irwin Rose Alencar de; Costa, José Galberto Martins da; Leite, Nádghia Figueiredo; Coutinho, Henrique Douglas Melo

doi:10.3390/ph13040066

Cited by 13 publications

(6 citation statements)

References 22 publications

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“…On the other hand, the human RBC membrane stabilization (HRBC) method has been employed for the determination of anti-inflammatory effects [24,25]. In this study, the results obtained indicated that the various S. unitus extracts, at various doses, exerted significant anti-inflammatory effects.…”

Section: Discussionmentioning

confidence: 81%

“…Hence, in recent years, medicinal plants have become a subject of interest for drug development owing to their phytochemical constituents and therapeutic potential. Few reports are available on the anti-inflammatory potential of pteridophytes [19][20][21][22][23][24][25]. Paulraj et al [26] reported the antibacterial ability of Sphaerostephanos subtruncatus and S. unitus, but no reports are available on the antioxidant, antidiabetic, anti-inflammatory, and cytotoxic effects of Sphaerostephanos unitus (L.) Holttum.…”

Section: Introductionmentioning

confidence: 99%

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In Vitro Toxicity, Antioxidant, Anti-Inflammatory, and Antidiabetic Potential of Sphaerostephanos unitus (L.) Holttum

et al. 2020

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Pteridophytes have been widely used in several systems of medicine. Several reports have increasingly assessed their bioactive effects, but for Sphaerostephanos unitus (L.) Holttum, only its antibacterial potential has been assessed. In this sense, the present study was carried out to reveal the phytochemical profile and to determine the toxicity, antioxidant, antidiabetic, and anti-inflammatory potential of S. unitus. Brine shrimp lethality, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, phosphomolybdenum assay, superoxide radical scavenging activity, 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) assay (ABTS), and in vitro α-amylase inhibitory and membrane stabilization assays were applied. S. unitus extract toxicity showed variable mortality percentages, with LC50 values ranging from 4 to 30 mg/mL. DPPH radical scavenging effects of S. unitus extracts were as follows: methanol > acetone > petroleum ether > chloroform. S. unitus acetone extract displayed the strongest phosphomolybdenum reduction (10 ± 2 mg Ascorbic Acid Equivalent/g). The studied extracts also revealed efficient, superoxide scavenging effects in a dose-dependent manner. In S. unitus, the highest ABTS radical scavenging rate was observed in the chloroform extract (3000 ± 40 µmol/g). The S. unitus anti-inflammatory effect was as follows: petroleum ether > chloroform > methanol > acetone. In S. unitus extract, the highest percentage of α-amylase activity (80%) was observed for the petroleum ether extract (25 µg/mL). Faced with these findings, further studies should be performed to isolate and identify the S. unitus compounds responsible for their antioxidant, antidiabetic and anti-inflammatory effects.

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Section: Discussionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

In Vitro Toxicity, Antioxidant, Anti-Inflammatory, and Antidiabetic Potential of Sphaerostephanos unitus (L.) Holttum

et al. 2020

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“…The complete reduction of Ag + ions occurred after 10 min at 40 °C. The synthesised AgNPs showed effective anti-inflammatory and antidiabetic activity, which was the result of the presence of polyphenols, terpenoids, and tannins in the extract, in addition to AgNP itself [ 175 , 178 ]. The amine groups present in the Capsicum annum proteins act as controlling and reducing agents for the formation of silver nanoparticles [ 179 ].…”

Section: Green Toxicology Of Silver Nanoparticlesmentioning

confidence: 99%

“…The biomass of Cinnamonomum camphora leaves treated with aqueous silver precursors at ambient temperature produces AgNPs with a circular shape. The protective and reducing biomolecules present in the plant are responsible for the shape of the nanoparticles [ 178 , 181 ]. Green synthesis using Mentha aquatica leaf extract produces small AgNPs.…”

Section: Green Toxicology Of Silver Nanoparticlesmentioning

confidence: 99%

Toxicological Aspects, Safety Assessment, and Green Toxicology of Silver Nanoparticles (AgNPs)—Critical Review: State of the Art

Noga¹,

Milan

Frydrych

et al. 2023

IJMS

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In recent years, research on silver nanoparticles (AgNPs) has attracted considerable interest among scientists because of, among other things, their alternative application to well-known medical agents with antibacterial properties. The size of the silver nanoparticles ranges from 1 to 100 nm. In this paper, we review the progress of research on AgNPs with respect to the synthesis, applications, and toxicological safety of AgNPs, and the issue of in vivo and in vitro research on silver nanoparticles. AgNPs’ synthesis methods include physical, chemical, and biological routes, as well as “green synthesis”. The content of this article covers issues related to the disadvantages of physical and chemical methods, which are expensive and can also have toxicity. This review pays special attention to AgNP biosafety concerns, such as potential toxicity to cells, tissues, and organs.

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“…The number of studies using plant extracts as reducing agents has been recently growing and various types of plant extracts have been used as reducing, capping, and stabilizing agents for the synthesis of AgNPs. Johnson et al [ 324 ] synthesized AgNPs using Odontosoria Chinensis extract and reported the formation of spherical AgNPs with diameters ranging from 22.3 to 48.2 nm. The reaction occurred at 40 °C, and a complete reduction of Ag + after 10 min was reported.…”

Section: Reviewmentioning

confidence: 99%

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

Kaabipour¹,

Hemmati²

2021

Beilstein J. Nanotechnol.

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The significance of silver nanostructures has been growing considerably, thanks to their ubiquitous presence in numerous applications, including but not limited to renewable energy, electronics, biosensors, wastewater treatment, medicine, and clinical equipment. The properties of silver nanostructures, such as size, size distribution, and morphology, are strongly dependent on synthesis process conditions such as the process type, equipment type, reagent type, precursor concentration, temperature, process duration, and pH. Physical and chemical methods have been among the most common methods to synthesize silver nanostructures; however, they possess substantial disadvantages and short-comings, especially compared to green synthesis methods. On the contrary, the number of green synthesis techniques has been increasing during the last decade and they have emerged as alternative routes towards facile and effective synthesis of silver nanostructures with different morphologies. In this review, we have initially outlined the most common and popular chemical and physical methodologies and reviewed their advantages and disadvantages. Green synthesis methodologies are then discussed in detail and their advantages over chemical and physical methods have been noted. Recent studies are then reviewed in detail and the effects of essential reaction parameters, such as temperature, pH, precursor, and reagent concentration, on silver nanostructure size and morphology are discussed. Also, green synthesis techniques used for the synthesis of one-dimensional (1D) silver nanostructures have been reviewed, and the potential of alternative green reagents for their synthesis has been discussed. Furthermore, current challenges regarding the green synthesis of 1D silver nanostructures and future direction are outlined. To sum up, we aim to show the real potential of green nanotechnology towards the synthesis of silver nanostructures with various morphologies (especially 1D ones) and the possibility of altering current techniques towards more environmentally friendly, more energy-efficient, less hazardous, simpler, and cheaper procedures.

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Synthesis of Silver Nanoparticles Using Odontosoria chinensis (L.) J. Sm. and Evaluation of their Biological Potentials

Cited by 13 publications

References 22 publications

In Vitro Toxicity, Antioxidant, Anti-Inflammatory, and Antidiabetic Potential of Sphaerostephanos unitus (L.) Holttum

In Vitro Toxicity, Antioxidant, Anti-Inflammatory, and Antidiabetic Potential of Sphaerostephanos unitus (L.) Holttum

Toxicological Aspects, Safety Assessment, and Green Toxicology of Silver Nanoparticles (AgNPs)—Critical Review: State of the Art

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

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