Incubation period induced biogenic synthesis of PEG enhanced Moringa oleifera silver nanocapsules and its antibacterial activity

Aisida, Samson O.; Ugwoke, Emmanuel; Uwais, Ali; Iroegbu, Chinedu; Botha, Subelia; Ahmad, Ishaq; Mâaza, M.; Ezema, Fabian I.

doi:10.1007/s10965-019-1897-z

Cited by 64 publications

(25 citation statements)

References 87 publications

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“…The characteristic organic functional groups that are believed to be involved in the reduction of Ag + ions could be mentioned with their FTIR absorptions as O–H stretching of alcohol and phenol (3285 cm –1 ), alkane C–OH stretching (2926 cm –1 ), carboxyl C=O bending (1880 cm –1 ), C–N stretching of aliphatic amines (1052 cm –1 ), aromatic C–H stretching (1627 cm –1 ), C=O stretching of aldehydes (1687 cm –1 ), polyphenol C–N stretching (1065 cm –1 ), C–H bending of alkanes (1390 cm –1 ), and C–H of alkanes (670 cm –1 ). 20 This led to the outcome that the Ag + ions were effected to Ag NPs by CSFE. It was inferred that biomolecules such as β-sitosterol, chrysophanol, physcion, cassiamin (A-E), and cassiachromones present in C. siamea flower extract were involved in the formation of Ag NPs ( Scheme 1 ).…”

Section: Resultsmentioning

confidence: 99%

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

et al. 2021

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Silver nanoparticles (Ag NPs) were synthesized using Cassia siamea flower petal extract (CSFE) as a reducing agent for the first time. In its presence and absence, the correlative effects of the anionic surface-active agent sodium dodecyl sulfate (SDS) were studied with respect to the development and texture of Ag NPs. Under different reagent compositions, the Ag NPs were inferred by localized surface plasmon resonance peaks between 419 and 455 nm. In the absence of SDS, there was a small eminence at 290 and around 350 nm, pointing toward the possibility of irregular polytope Ag NPs, which was confirmed in the transmission electron microscopy images. This elevation vanished beyond the cmc of [SDS], resulting in spherical and oval shaped Ag NPs. The effects of reagent concentrations were studied at 25 °C and around 7 and 9 pH in the absence and presence of SDS, respectively. Also, kinetic studies were performed by UV–visible spectrophotometry. Prodigious effects on shape and size were found under different synthesis conditions in terms of hexagonal, rod-, irregular-, and spherical shaped Ag NPs. Furthermore, the antimycotic activity of the synthesized Ag NPs was established on different Candida strains, and best results were found pertaining Candida tropicalis . The ensuing study impels the control of texture and dispersity for Ag NPs by CSFE and SDS, and the resultant polytope Ag NPs could be a future solution for drug-resistant pathogenic fungi.

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Section: Resultsmentioning

confidence: 99%

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

et al. 2021

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“…Therefore, the choice of suitable capping moieties is key in stabilizing the colloidal solutions and their uptake into living cells and the environment. The surface chemistry and size distribution of nanoparticles get altered after capping with biocompatible surfactants [ 4 – 7 ]. Capping agents should be biodegradable, well-dispersed and biosoluble, biocompatible, and non-toxic in nature so that they can be easily utilized in the living system.…”

Section: Introductionmentioning

confidence: 99%

Role of capping agents in the application of nanoparticles in biomedicine and environmental remediation: recent trends and future prospects

et al. 2020

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Capping agents are of utmost importance as stabilizers that inhibit the over-growth of nanoparticles and prevent their aggregation/coagulation in colloidal synthesis. The capping ligands stabilize the interface where nanoparticles interact with their medium of preparation. Specific structural features of nanoparticles are attributed to capping on their surface. These stabilizing agents play a key role in altering the biological activities and environmental perspective. Stearic effects of capping agents adsorbed on the surface of nanoparticles are responsible for such changing physico-chemical and biological characteristics. Firstly, this novel review article introduces few frequently used capping agents in the fabrication of nanoparticles. Next, recent advancements in biomedicine and environmental remediation approaches of capped nanoparticles have been elaborated. Lastly, future directions of the huge impact of capping agents on the biological environment have been summarized.

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“…Nanoparticles are promising in different fields such as biomedicine, drug delivery, bio-imaging, bio-labeling, photovoltaics, photocatalysis, solar cells, and data storage (Bera et al 2010 ; Garcia 2011 ; Issa et al 2013 ; Javed et al 2020 ; Aisida et al 2019a , b , c , 2021a , b ). Biosynthesis of nanoparticles by microorganisms is a non-toxic and eco-friendly method (Srivastava et al 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles using Haloferax sp. NRS1: image analysis, characterization, in vitro thrombolysis and cytotoxicity

et al. 2021

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Haloferax sp strain NRS1 (MT967913) was isolated from a solar saltern on the southern coast of the Red Sea, Jeddah, Saudi Arabia. The present study was designed for estimate the potential capacity of the Haloferax sp strain NRS1 to synthesize (silver nanoparticles) AgNPs. Biological activities such as thrombolysis and cytotoxicity of biosynthesized AgNPs were evaluated. The characterization of silver nanoparticles biosynthesized by Haloferax sp (Hfx-AgNPs) was analyzed using UV–vis spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). The dark brown color of the Hfx-AgNPs colloidal showed maximum absorbance at 458 nm. TEM image analysis revealed that the shape of the Hfx-AgNPs was spherical and a size range was 5.77- 73.14 nm. The XRD spectra showed a crystallographic plane of silver nanoparticles, with a crystalline size of 29.28 nm. The prominent FTIR peaks obtained at 3281, 1644 and 1250 cm− 1 identified the Functional groups involved in the reduction of silver ion reduction to AgNPs. Zeta potential results revealed a negative surface charge and stability of Hfx-AgNPs. Colloidal solution of Hfx-AgNPs with concentrations ranging from 3.125 to 100 μg/mL was used to determine its hemolytic activity. Less than 12.5 μg/mL of tested agent showed no hemolysis with high significant decrease compared with positive control, which confirms that Hfx-AgNPs are considered non-hemolytic (non-toxic) agents according to the ISO/TR 7405-1984(f) protocol. Thrombolysis activity of Hfx-AgNPs was observed in a concentration-dependent manner. Further, Hfx-AgNPs may be considered a promising lead compound for the pharmacological industry.

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Incubation period induced biogenic synthesis of PEG enhanced Moringa oleifera silver nanocapsules and its antibacterial activity

Cited by 64 publications

References 87 publications

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

Role of capping agents in the application of nanoparticles in biomedicine and environmental remediation: recent trends and future prospects

Biosynthesis of silver nanoparticles using Haloferax sp. NRS1: image analysis, characterization, in vitro thrombolysis and cytotoxicity

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