Physico-chemical, antimicrobial and anticancer properties of silver nanoparticles synthesised from organ-specific extracts of Bidens pilosa L.

Mtambo, Sphamandla E.; Krishna, S.; Sershen,; Gasqui, Patrick

doi:10.1016/j.sajb.2019.07.046

Cited by 14 publications

(6 citation statements)

References 35 publications

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“…Due to the similarities in terms of size and shape, the most probable explanation for the registered differences resides in the capping phytochemicals from different extracts (with a superior antimicrobial effect being associated with an increased content in polyphenolic compounds). For example, Mtambo et al [15] presented the phytosynthesis of silver nanoparticles (AgNPs) by using aqueous extracts obtained from different parts of Bidens pilosa L. 1753 (leaves, stems and roots), as well as different concentration of a metal salt precursor (1 and 2 mM). The lowest average diameters that were observed by the authors were 7.85 nm (leaf extract/1 mM silver salt) and 11.89 nm (root extract/2 mM silver salt).…”

Section: Antimicrobial Applicationsmentioning

confidence: 99%

“…The antifungal potential was also established to be concentration-dependent, with a superior effect for the smaller particles (obtained by using 1 mM silver precursor) lines and the best efficiency observed for the leaf extract, followed by stem and root extracts. Ibrahim et al [16] obtained spherical and cubical nanoparticles For example, Mtambo et al [15] presented the phytosynthesis of silver nanoparticles (AgNPs) by using aqueous extracts obtained from different parts of Bidens pilosa L. 1753 (leaves, stems and roots), as well as different concentration of a metal salt precursor (1 and 2 mM). The lowest average diameters that were observed by the authors were 7.85 nm (leaf extract/1 mM silver salt) and 11.89 nm (root extract/2 mM silver salt).…”

Section: Antimicrobial Applicationsmentioning

confidence: 99%

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Phytosynthesized Metallic Nanoparticles—between Nanomedicine and Toxicology. A Brief Review of 2019′s Findings

et al. 2020

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Phytosynthesized nanoparticles represent a continuously increasing field of research, with numerous studies published each year. However, with the emerging interest in this area, the quality of the published works is also continuously increasing, switching from routine antioxidant or antimicrobial studies on trivial microbial lines to antibiotic-resistant strains or antitumoral studies. However, this increasing interest has not been not reflected in the studies regarding the toxicological effects of nanoparticles (NPs); this should be a subject of greatest interest, as the increasing administration of NPs in general (and phytosynthesized NPs in particular) could lead to their accumulation in the environment (soil, water and living organisms). The present review aims to present the most recent findings in the application of phytosynthesized NPs as antimicrobial and antitumoral agents, as well as the results regarding their toxicological potential.Materials 2020, 13, 574 2 of 32 in terms of their toxic potential towards target organisms (leading to their proposal as antimicrobial [4], antiviral [5] or cytogenotoxic agents [6]), their possible negative toxicity has not been thoroughly established. The present review aims to present the advances that have been recorded in the last year in the area of phytosynthesized nanoparticle applications and toxicity studies, as well to underline the shortcomings of the encountered approach. The literature review survey was performed on multiple databases (Scopus, Web of Science, ScienceDirect, SpringerLink, PubMed) and used the main keywords "nanoparticles" and "extract" (as the term "phytosynthesis" was not adopted by all the authors). From the returned results, only the works that were published in the last year (2019) were selected. Furthermore, a supplementary selection was performed by using keywords as "antimicrobial," "cytotoxicity," and "toxicology" (results presented in Figure 1). The results of this preliminary selection led to the return of approximately 1800 unique works (from all the databases). A preliminary validation was manually performed (by reading the keywords and abstract) in order to remove the "false-positive" results. The final validation was performed by reading the entire manuscript. The criteria for inclusion in the present review were: (i) the use of phytosynthesized nanoparticles that were obtained in the laboratory; (ii) the existence of analytical studies for the characterization of the nanoparticles; and (iii) in-depth applications reports. The review is structured in different chapters for each potential application that is related to the toxic effect of the metallic nanoparticles.

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Section: Antimicrobial Applicationsmentioning

confidence: 99%

Section: Antimicrobial Applicationsmentioning

confidence: 99%

Phytosynthesized Metallic Nanoparticles—between Nanomedicine and Toxicology. A Brief Review of 2019′s Findings

et al. 2020

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“…In agreement with our findings, a previous study showed that the green synthesis of AgNPs by Pedalium murex leaf extract had higher absorption peaks at 400–450 nm at different concentrations, whereas the TEM showed AgNPs with spherical shapes [ 24 ]. Similarly, other studies showed that the biosynthesized AgNPs created from other plants such as Bidens pilosa L. [ 25 ], Sabal blackburniana [ 26 ], and Aaronsohnia factorovskyi [ 27 ] had specific absorption for the synthesized nanoparticles. Also.…”

Section: Resultsmentioning

confidence: 83%

“…Different studies reported the anticandidal activity of AgNPs, biosynthesized by different plant parts of Phoenix dactylifera L. [ 39 , 40 ]. Other studies confirmed that silver nanoparticles synthesized from extracts from Bidens pilosa L. [ 25 ], Aaronsohnia factorovskyi [ 27 ], and Senna alexandrina [ 41 ] showed significant antimicrobial activities. To our knowledge, there are no studies on the antifungal effects of Phoenix dactylifera L. leaves against other Candida spp.…”

Section: Resultsmentioning

confidence: 90%

“…The TEM results revealed that the produced AgNPs had larger sizes than AgNO 3 and crude extracts of these plants [ 25 , 26 , 27 ]. That might be because of the production of free vibrating electrons upon the reduction in Ag + ions, and that causes the formation of the SPR absorption band [ 25 , 28 ]. Several other studies with different plants had similar results [ 20 , 21 , 29 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

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Antimicrobial Activity of Green Silver Nanoparticles Synthesized by Different Extracts from the Leaves of Saudi Palm Tree (Phoenix Dactylifera L.)

et al. 2022

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The Arabian desert is rich in different species of medicinal plants, which approved variable antimicrobial activities. Phoenix dactylifera L. is one of the medical trees rich in phenolic acids and flavonoids. The current study aimed to assess the antibacterial and antifungal properties of the silver nanoparticles (AgNPs) green-synthesized by two preparations (ethanolic and water extracts) from palm leaves. The characteristics of the produced AgNPs were tested by UV-visible spectroscopy and Transmitted Electron Microscopy (TEM). The antifungal activity of Phoenix dactylifera L. was tested against different species of Candida. Moreover, its antibacterial activity was evaluated against two Gram-positive and two Gram-negative strains. The results showed that AgNPs had a spherical larger shape than the crude extracts. AgNPs, from both preparations, had significant antimicrobial effects. The water extract had slightly higher antimicrobial activity than the ethanolic extract, as it induced more inhibitory effects against all species. That suggests the possible use of palm leaf extracts against different pathogenic bacteria and fungi instead of chemical compounds, which had economic and health benefits.

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Green synthesis of silver nanoparticles using Amomum nilgiricum leaf extracts: preparation, physicochemical characterization and ameliorative effect against human cancer cell lines

Konappa,

Patil,

Kariyappa

et al. 2024

Cytotechnology

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Physico-chemical, antimicrobial and anticancer properties of silver nanoparticles synthesised from organ-specific extracts of Bidens pilosa L.

Cited by 14 publications

References 35 publications

Phytosynthesized Metallic Nanoparticles—between Nanomedicine and Toxicology. A Brief Review of 2019′s Findings

Phytosynthesized Metallic Nanoparticles—between Nanomedicine and Toxicology. A Brief Review of 2019′s Findings

Antimicrobial Activity of Green Silver Nanoparticles Synthesized by Different Extracts from the Leaves of Saudi Palm Tree (Phoenix Dactylifera L.)

Green synthesis of silver nanoparticles using Amomum nilgiricum leaf extracts: preparation, physicochemical characterization and ameliorative effect against human cancer cell lines

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