Mosquito larvicidal and antimicrobial activity of synthesized nano-crystalline silver particles using leaves and green berry extract of Solanum nigrum L. (Solanaceae: Solanales)

Rawani, Anjali; Ghosh, Anupam; Chandra, Goutam

doi:10.1016/j.actatropica.2013.09.007

Cited by 130 publications

(66 citation statements)

References 42 publications

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“…In agreement with our results, Pergularia daemia-synthesized AgNPs have been reported as non-toxic against the non-target fish Poecilia reticulata, while they are able to evoke good mortality rates against mosquito vectors Anopheles stephensi and Ae. aegypti (Patil et al 2012; see also Haldar et al 2013;Rawani et al 2013). More recently, Murugan et al (2015a) showed that seaweed-synthesized AgNPs did not negatively impact the predation rates of copepod Mesocyclops longisetus against Cu.…”

Section: Toxicity Against Anopheles Stephensimentioning

confidence: 99%

Datura metel-synthesized silver nanoparticles magnify predation of dragonfly nymphs against the malaria vector Anopheles stephensi

et al. 2015

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Malaria is a life-threatening disease caused by parasites transmitted to people and animals through the bites of infected mosquitoes. The employ of synthetic insecticides to control Anopheles populations leads to high operational costs, non-target effects, and induced resistance. Recently, plant-borne compounds have been proposed for efficient and rapid extracellular synthesis of mosquitocidal nanoparticles. However, their impact against predators of mosquito larvae has been poorly studied. In this study, we synthesized silver nanoparticles (AgNPs) using the Datura metel leaf extract as reducing and stabilizing agent. The biosynthesis of AgNPs was confirmed analyzing the excitation of surface plasmon resonance using ultraviolet-visible (UV-vis) spectroscopy. Scanning electron microscopy (SEM) showed the clustered and irregular shapes of AgNPs, with a mean size of 40-60 nm. The presence of silver was determined by energy-dispersive X-ray (EDX) spectroscopy. Fourier transform infrared (FTIR) spectroscopy analysis investigated the identity of secondary metabolites, which may be acting as AgNP capping agents. In laboratory, LC50 of D. metel extract against Anopheles stephensi ranged from 34.693 ppm (I instar larvae) to 81.500 ppm (pupae). LC50 of AgNP ranged from 2.969 ppm (I instar larvae) to 6.755 ppm (pupae). Under standard laboratory conditions, the predation efficiency of Anax immaculifrons nymphs after 24 h was 75.5 % (II instar larvae) and 53.5 % (III instar larvae). In AgNP-contaminated environment, predation rates were boosted to 95.5 and 78 %, respectively. Our results documented that D. metel-synthesized AgNP might be employed at rather low doses to reduce larval populations of malaria vectors, without detrimental effects on behavioral traits of young instars of the dragonfly Anax immaculifrons.

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Section: Toxicity Against Anopheles Stephensimentioning

confidence: 99%

Datura metel-synthesized silver nanoparticles magnify predation of dragonfly nymphs against the malaria vector Anopheles stephensi

et al. 2015

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“…Haldar et al (2013) did not detect toxicity of AgNP produced using dried green fruits of D. roxburghii against P. reticulata, after 48-h exposure to LC 50 of IV instar larvae of A. stephensi and C. quinquefasciatus. Rawani et al (2013) showed that mosquitocidal AgNP synthesized using Solanum nigrum berry extracts were not toxic against two mosquito predators, Toxorhynchites larvae and Diplonychus annulatum, and Chironomus circumdatus larvae, exposed to lethal concentrations of dry nanoparticles calculated on A. stephensi and C. quinquefasciatus larvae. AgNP biosynthesized using the 2, 7.bis[2-[diethylamino]-ethoxy]fluorence isolate from the Melia azedarach leaves did not show acute toxicity against Mesocyclops pehpeiensis copepods (Ramanibai and Velayutham 2015).…”

Section: Biotoxicity On Non-target Organismsmentioning

confidence: 99%

One-step synthesis of polydispersed silver nanocrystals using Malva sylvestris: an eco-friendly mosquito larvicide with negligible impact on non-target aquatic organisms

et al. 2016

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The synthesis of eco-friendly nanoparticles is evergreen branch of nanoscience with a growing number of biomedical implications. In this study, we investigated the synthesis of polydisperse and stable silver nanoparticles (AgNP) using a cheap leaf extract of Malva sylvestris (Malvaceae). Bio-reduced AgNP were characterized by UV-visible spectrophotometry, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The acute toxicity of M. sylvestris leaf extract and green-synthesized AgNP was evaluated against larvae of the malaria vector Anopheles stephensi, the dengue vector Aedes aegypti and the filariasis vector Culex quinquefasciatus. Compared to the leaf aqueous extract, AgNP showed higher toxicity against A. stephensi, A. aegypti, and C. quinquefasciatus with LC 50 values of 10.33, 11.23, and 12.19 μg/mL, respectively. Greensynthesized AgNP were found safer to non-target organisms Diplonychus indicus and Gambusia affinis, with respective LC 50 values ranging from 813.16 to 1044.52 μg/mL. Overall, this research firstly shed light on the mosquitocidal potential of M. sylvestris, a potential bio-resource for rapid, cheap and effective synthesis of polydisperse and highly stable silver nanocrystals.

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“…Although these results contradict most of the work presented in the literature showing positive effects against the same microbe, few reports reported the same finding. Rawani et al 66 found that their two investigated human pathogens, E. coli and Pseudomonas aeruginosa, were not affected by their prepared NPs. Recently, this was attributed to the finding that AgNPs stimulated the activation of anaerobic respirationrelated regulators and enzymes, which play an important role in the resistance of E. coli to AgNPs.…”

mentioning

confidence: 99%

Facile method for the synthesis of silver nanoparticles using 3-hydrazino-isatin derivatives in aqueous methanol and their antibacterial activity

El‐Faham¹,

Elzatahry²,

ALOthman³

et al. 2014

IJN

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Introduction A new method for preparation of silver nanoparticles (AgNPs) based on using hydrazino-isatin derivatives in an aqueous methanol reaction medium is reported here. AgNPs were prepared using silver nitrate solubilized in a water core as the source of silver ions and 3-hydrazino-isatin derivatives (3-hydrazino-isatin [IsH] and 1-benzyl-3-hydrazino-isatin [BIsH]) solubilized in methanol core as a reducing agent. The proposed method is effective, rapid, and convenient. X-ray diffraction (XRD), energy dispersive X-ray analysis, scanning electron microscope (SEM) and transmission electron microscopy (TEM) were used for characterization of the AgNPs. The TEM micrographs confirmed that the nanopowders consist of well-dispersed agglomerates of grains with a narrow size distribution of 18–21 nm and 17–20 nm. The AgNPs, as well as BIsH, showed high antimicrobial and bactericidal activity against the Gram-positive Bacillus subtilis and Gram-negative Micrococcus luteus and Proteus vulgaris , as well as antifungal activities against Saccharomyces cerevisiae . On the other hand, they were not effective against the Gram-negative Escherichia coli . Purpose A simple, effective, rapid, and convenient chemical reduction method for the synthesis of AgNPs in an aqueous methanol reaction medium using hydrazino-isatin derivatives and studying their antibacterial effect. Results IsH and BIsH are remarkably powerful reductants for Ag+ ions in an aqueous methanol medium, which could be considered as a simple chemical reduction method for formation of AgNPs. The AgNP formation depends on the solubility of the hydrazino-isatin derivatives. BIsH gave more AgNPs than IsH, as observed from XRD. The formation of AgNPs is attributed to the adsorption of hydrazine derivatives and/or interparticle interaction on the surface of AgNP through electrostatic interactions between the lone pair electrons of the hydrazino group (C=N-NH 2 ) and the positive surface of AgNPs. AgNPs and BIsH showed high antimicrobial and bacterial activity. Conclusion In summary, it is shown that IsH and BIsH are remarkably powerful reductants for Ag+ ions in an aqueous methanol medium. BIsH gave more AgNPs than IsH, as observed from XRD due to better solubility of the BIsH than IsH in aqueous-methanol. The formation of AgNPs is attributed to the adsorption of hydrazine derivatives and/or interparticle interaction on the surface of AgNPs through electrostatic interactions between the lone pair electrons of the hydrazino group (C=N-NH 2 ) and the positive surface of AgNPs. The AgNps as well as BIsH ligand showed high antimicrobial and bactericidal activity.

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Mosquito larvicidal and antimicrobial activity of synthesized nano-crystalline silver particles using leaves and green berry extract of Solanum nigrum L. (Solanaceae: Solanales)

Cited by 130 publications

References 42 publications

Datura metel-synthesized silver nanoparticles magnify predation of dragonfly nymphs against the malaria vector Anopheles stephensi

Datura metel-synthesized silver nanoparticles magnify predation of dragonfly nymphs against the malaria vector Anopheles stephensi

One-step synthesis of polydispersed silver nanocrystals using Malva sylvestris: an eco-friendly mosquito larvicide with negligible impact on non-target aquatic organisms

Facile method for the synthesis of silver nanoparticles using 3-hydrazino-isatin derivatives in aqueous methanol and their antibacterial activity

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