Bioinspired graphene-based silver nanoparticles: Fabrication, characterization and antibacterial activity

Potbhare, Ajay K.; Umekar, Mayuri S.; Chouke, Prashant B.; Bagade, Mahendra B.; Aziz, S.K. Tarik; Abdala, Ahmed; Chaudhary, Ratiram Gomaji

doi:10.1016/j.matpr.2020.04.212

Cited by 24 publications

(8 citation statements)

References 23 publications

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“…Inside the membrane, the affinity of silver ions for sulphur and phosphorus containing macromolecules results in disruption of ATP production and DNA replication. AgNPs also causes oxidative stress inside bacterial cell membrane by triggering the generation of free radicals ultimately leading to cell death [54–57] . The combinatorial action of the AgNPs on bacterial cell accounts for their inhibitory effect as antibacterial compounds.…”

Section: Resultsmentioning

confidence: 99%

Antioxidant, Antibacterial, and BSA Binding Properties of Curcumin Caffeate Capped Silver Nanoparticles Prepared by Greener Method

et al. 2022

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A green method of silver nanoparticle (AgNP) preparation using curcumin caffeate (CCaf) as stabilizing/capping and reducing group is reported here. CCaf is prepared through esterification of curcumin and caffeic acid in presence of p‐toluene sulphonic acid as catalyst. CCaf facilitates production of AgNPs in aqueous medium and room temperature without any external reducing agents. The antioxidant, antibacterial and BSA binding interactions of these CCafAgNPs are evaluated. The antioxidant activity and the corresponding IC50 value for the CCafAgNPs is found to be comparable with ascorbic acid taken as standard antioxidant for the study. The results of bactericidal screening of CCafAgNPs are better compared to CCaf capping group and found to exhibit broad spectrum antibacterial property against Gram‐positive and Gram‐negative bacterial pathogens. In presence of CCafAgNPs the absorption spectra of BSA showed changes with increase in intensity around 280 nm of native BSA peak and appearance of a new band around 320 nm, indicating the possible binding interactions between BSA and CCafAgNPs.

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Section: Resultsmentioning

confidence: 99%

Antioxidant, Antibacterial, and BSA Binding Properties of Curcumin Caffeate Capped Silver Nanoparticles Prepared by Greener Method

et al. 2022

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“…This approach is considered environmentally friendly and cost-effective. Similarly, another study [72] presented the fabrication and antibacterial properties of AgNPs on the surface of graphene oxide (GO) nanosheets. The researchers utilized a biomass extract of Pseudomonas aeruginosa to synthesize the nanocomposites.…”

Section: Elicitation Mediated More Dpph Scavenging Abilitymentioning

confidence: 99%

Enhancing Bioactive Metabolite Production in Aerva sanguinolenta Callus Cultures through Silver Nanoparticle and Salicylic Acid Elicitation

et al. 2023

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Callus elicitation is advantageous for metabolite production due to its ability to increase yield, provide controllable conditions, and allow for genetic manipulation, offering a sustainable and scalable alternative to traditional plant-based extraction methods for the production of bioactive substances. In this research, in vitro callus cultures (CCs) of the wild medicinal plant Aerva sanguinolenta were used to evaluate the efficacy of various elicitation regimes of silver nanoparticles (AgNPs) and salicylic acid (SA) to evoke an increased production of secondary metabolites, such as aervine and antioxidant metabolites. Three concentrations of SA (i.e., 20, 50, and 100 µM) and three concentrations of AgNPs (i.e., 30, 60, and 90 µg/L) were used on shoot explant cultures using MS (Murashige and Skoog) media. All the SA and AgNP elicitation treatments significantly increased the production of antioxidant metabolites, total phenolic contents (TPCs), and total flavonoid contents (TFCs) compared to the control treatment experiments. The contents of aervine were increased significantly upon elicitation compared to the control trial. Furthermore, the antioxidant potential of the test extract was enhanced compared to the control treatment. Comparatively, the AgNPs were more beneficial as elicitors than the SA treatments. The elicitation treatments with about 90 µg/L AgNPs and 100 µM SA were the best among all elicitation regimes. Callus elicitation with SA and AgNPs can stimulate increased metabolite production and be used as a sustainable practice in the welfare and service industries for drug development and drug discovery.

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“…Similarly, Mimusops elengi synthesised Ag NPs were found to be toxic to Ae. aegypti (LC 50 16.59 μg ml −1 ) and C. quinquefasciatus (LC 50 18.75 μg ml −1 ) [70].…”

Section: Larvicidal Activitymentioning

confidence: 99%

“…Hence researchers are more inspired towards the biosynthesis of nanoparticles which is safe, economically cheaper and less toxic [13][14][15]. The sources of biosynthesised nanoparticles are plants, bacteria, fungus, yeast and algae [16][17][18][19][20]. Plant-based nanoparticles have a broad range of indispensable applications [ [21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Bioinspired synthesis of zinc oxide nanoparticles by using leaf extract of Solanum lycopersicum L. for larvicidal activity of Aedes aegypti L.

Nityasree¹,

Chalannavar²,

Kouser³

et al. 2021

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Aedes aegypti and Aedes albopictus are the key transmitters of varied life-threatening arbovirus diseases; overuse of synthetic chemicals to target vector-borne diseases has an adverse impact on the environment. Biological agents have proven to be an alternative source to synthetic agents for controlling mosquitoes. In this context, the present study investigated the biosynthesis of ZnO NPs using Solanum lycopersicum leaf extract under the influence of solution combustion synthesis method and assessment of its larvicidal efficacy against Aedes aegypti. Synthesised ZnO NPs were characterised by using UV–vis, FTIR, SEM, EDX and XRD. The physicochemical parameter confirmed the synthesised nanoparticles were highly pure. The UV spectrum showed a strong peak at 352 nm corresponding to bandgap energy 3.01 eV. The SEM indicates the particles were rod-like structures. Further, the EDX analysis primarily confirms the zinc and oxygen without any impurities. The XRD data shows the crystallite size of ZnO Nps was of 40.93 nm. Finally, the aqueous leaf extract and ZnO NPs showed significant (p < 0.05) larvicidal activity at 48 h. However, ZnO NPs revealed high larvicidal effect compared to aqueous extract. From the results, it can be concluded that the bioactive constituents present within the plant extract act as capping and reducing agents for the successful ZnO NPs synthesis and could be used for controlling mosquito vector Ae. aegypti.

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Bioinspired graphene-based silver nanoparticles: Fabrication, characterization and antibacterial activity

Cited by 24 publications

References 23 publications

Antioxidant, Antibacterial, and BSA Binding Properties of Curcumin Caffeate Capped Silver Nanoparticles Prepared by Greener Method

Antioxidant, Antibacterial, and BSA Binding Properties of Curcumin Caffeate Capped Silver Nanoparticles Prepared by Greener Method

Enhancing Bioactive Metabolite Production in Aerva sanguinolenta Callus Cultures through Silver Nanoparticle and Salicylic Acid Elicitation

Bioinspired synthesis of zinc oxide nanoparticles by using leaf extract of Solanum lycopersicum L. for larvicidal activity of Aedes aegypti L.

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