Application of Biosynthesized Silver Nanoparticles for the Control of Land Snail <i>Eobania vermiculata</i> and Some Plant Pathogenic Fungi

Ali, Safaa M.; Yousef, Naeima M. H.; Nafady, Nivien A.

doi:10.1155/2015/218904

Cited by 70 publications

(36 citation statements)

References 48 publications

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“…aegyptiacus ) has been documented. The exposure of the snails and soil matrix to silver nanoparticles in a laboratory experiment reduced the activity and the viability of the land snail (20% of silver nanoparticles treated snails died) as well as the frequency of fungal population in the surrounding soil [18]. Spherical shaped silver nanoparticles in size range of ∼10 to 20 nm using culture supernatant of Serratia sp.…”

Section: Biosynthesis Of Nanoparticles and Their Use In Agriculturementioning

confidence: 99%

Nanotechnology: The new perspective in precision agriculture

Duhan

Kumar

et al. 2017

Biotechnology Reports

865

316

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HighlightsPrecision farming is measuring and responding to inter and intra-field variability in crops to form a decision support system.About 40–70% of N, 80–90% of P and 50–70% of K of the applied fertilizers is lost to the environment causing pollution.Nanofertilizers helps in slow and sustained release of agrochemicals resulting in precise dosage to the plants.Green synthesized Ag, ZnO and TiO2 NPs are extensively used for plant protection and treatment of diseases.Biosensors helps in detecting pesticides in the vegetable crops and form a decision support system for crop commodities.

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Section: Biosynthesis Of Nanoparticles and Their Use In Agriculturementioning

confidence: 99%

Nanotechnology: The new perspective in precision agriculture

Duhan

Kumar

et al. 2017

Biotechnology Reports

865

316

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show abstract

“…The technique seems to be useful for gradually delivering natural active substances to the site of action, for example, in medicine (Chowański et al., ) or as antimicrobial agents (São Pedro et al., ), which simultaneously minimizes the toxic effects on nontarget organisms (Campolo et al., ). Several compounds have been used for the formation of microspheres or nanoparticles that are used to deliver plant‐derived bioactive substances: liposomes (Moghimipour, Aghel, Zarei Mahmoudabadi, Ramezani, & Handali, ), oil‐in‐water nanoemulsions (Papanikolaou et al., ), Tween 20, chitosan combined with other substances (Ziaee, Moharramipour, & Mohsenifar, ), silica (Chaudhary et al., ), metals and metal oxides (Ali, Yousef, & Nafady, ), and proteins such as bovine or human serum albumins (Sokolik, Ben‐Shabat‐Binyamini, Gedanken, & Lellouche, ). Next, Athanassiou, Kavallieratos, Evergetis, Katsoula, and Haroutounian () reported the usage of a silica gel with essential oils.…”

Section: Applicationmentioning

confidence: 99%

Plant‐Derived Substances Used Against Beetles–Pests of Stored Crops and Food–and Their Mode of Action: A Review

Spochacz

Chowański

Walkowiak-Nowicka

et al. 2018

Comp Rev Food Sci Food Safe

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Plants are sources of numerous active substances that are used to protect crops. Currently, due to the limitations of using synthetic insecticides, plant products have attracted increasing attention as possible pesticides. In this review, we discuss some of the most interesting plant products (for example, Solanaceae, or Asteraceae extracts, Artemisia absinthium or Citrus spp. essential oils, and single compounds like α-chaconine, or α-solanine) that exhibit insecticidal activity against beetles that are pests of stored food products. Next, we describe and discuss the mode of action of these products, including lethal and sublethal effects, such as antifeedant or neurotoxic activity, ultrastructural malformation, and effects on prooxidant/antioxidant balance. Furthermore, the methods of application of plant-derived substances in food storage areas are presented.

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“…Finally, ultrathin sections (60 nm) were cut with an ultramicrotome (Reichert Ultracuts), contrasted with an uranyl acetate and lead citrate, and examined with a transmission electron microscope (JEOL TEM 100 CXII) at 80 kV and imaged. 43 …”

Section: Transition Electron Microscope Examinationmentioning

confidence: 99%

In vitro and in vivo evaluation of biologically synthesized silver nanoparticles for topical applications: effect of surface coating and loading into hydrogels

Mekkawy

El‐Mokhtar²,

Nafady

et al. 2017

IJN

152

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In the present study, silver nanoparticles (AgNPs) were synthesized via biological reduction of silver nitrate using extract of the fungus Fusarium verticillioides (green chemistry principle). The synthesized nanoparticles were spherical and homogenous in size. AgNPs were coated with polyethylene glycol (PEG) 6000, sodium dodecyl sulfate (SDS), and β-cyclodextrin (β-CD). The averaged diameters of AgNPs were 19.2±3.6, 13±4, 14±4.4, and 15.7±4.8 nm, for PEG-, SDS-, and β-CD-coated and uncoated AgNPs, respectively. PEG-coated AgNPs showed greater stability as indicated by a decreased sedimentation rate of particles in their water dispersions. The antibacterial activities of different AgNPs dispersions were investigated against Gram-positive bacteria (methicillin-sensitive and methicillin-resistant Staphylococcus aureus ) and Gram-negative bacteria ( Escherichia coli ) by determination of the minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs). MIC and MBC values were in the range of 0.93–7.5 and 3.75–15 µg/mL, respectively, which were superior to the reported values in literature. AgNPs-loaded hydrogels were prepared from the coated-AgNPs dispersions using several gelling agents (sodium carboxymethyl cellulose [Na CMC], sodium alginate, hydroxypropylmethyl cellulose, Pluronic F-127, and chitosan). The prepared formulations were evaluated for their viscosity, spreadability, in vitro drug release, and antibacterial activity, and the combined effect of the type of surface coating and the polymers utilized to form the gel was studied. The in vivo wound-healing activity and antibacterial efficacy of Na CMC hydrogel loaded with PEG-coated AgNPs in comparison to the commercially available silver sulfadiazine cream (Dermazin ® ) were evaluated. Superior antibacterial activity and wound-healing capability, with normal skin appearance and hair growth, were demonstrated for the hydrogel formulations, as compared to the silver sulfadiazine cream. Histological examination of the treated skin was performed using light microscopy, whereas the location of AgNPs in the skin epidermal layers was visualized using transmission electron microscopy.

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Application of Biosynthesized Silver Nanoparticles for the Control of Land Snail Eobania vermiculata and Some Plant Pathogenic Fungi

Cited by 70 publications

References 48 publications

Nanotechnology: The new perspective in precision agriculture

Nanotechnology: The new perspective in precision agriculture

Plant‐Derived Substances Used Against Beetles–Pests of Stored Crops and Food–and Their Mode of Action: A Review

In vitro and in vivo evaluation of biologically synthesized silver nanoparticles for topical applications: effect of surface coating and loading into hydrogels

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