Agnps
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Extending vase life of carnation flowers by postharvest nano silver, humic acid and Aloe Vera gel treatments
Resumo Flores de cravo (Dianthus caryophyllus cv. Dover) foram colhidas no estádio de pincel no início da manhã, pré-resfriadas a 4 °C por 6 horas e então movidas a seco para o laboratório. As flores foram pesadas e tratadas por 24 horas com nanopartículas de prata (AgNPs) a 0, 5 ou 10 ppm em baldes plásticos. Após os tratamentos de plusing, as flo
Ornamental Horticulture. Publicado em: 2022
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2. EFEITO DO HG2+ E DOS ÍONS CU2+, FE2+, NI2+, SN2+ E ZN2+ NA ESTABILIDADE DE NANOPARTÍCULAS DE PRATA: UMA PRÁTICA INTERDISCIPLINAR DE NANOTECNOLOGIA EXPERIMENTAL
The growing predominance of nanoscience and nanotechnology makes it increasingly important that these topics become an integral part of all scientific education. For this reason, in the present work, an interdisciplinary experiment of nanotechnology is introduced. As silver nanoparticles (AgNPs) are the most applied nanomaterial in consumer products, the cur
Quím. Nova. Publicado em: 2021-04
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3. Síntese de nanopartículas de prata (AgNPs) por Fusarium concolor e a inibição de fitopatógenos
RESUMO The use of nanoparticles (NPs) in agriculture represents an important technological innovation, which can be employed in the production of nanofertilizers, nanocides or pesticides encapsulated in nanoparticles for controlled release. Silver NPs are recognized for their applications in agriculture, biotechnology and medicine. The objective of this pape
Summa phytopathol.. Publicado em: 2021-03
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4. Green Synthesis, Characterization and Antimicrobial Evaluation of Silver Nanoparticles for an Intracanal Dressing
Resumo A química verde tem sido aplicada em diferentes áreas devido à crescente demanda por processos renováveis e uma delas é a nanotecnologia. O objetivo deste estudo foi caracterizar uma formulação contendo nanopartículas de prata (AgNPs) produzidas por meio de síntese verde e avaliar sua atividade antimicrobiana. A formulação será usada como
Braz. Dent. J.. Publicado em: 2020-09
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5. METHOD DEVELOPMENT AND VALIDATION FOR THE FLUOROQUINOLONES DETERMINATION BY STABILIZED SILVER NANOPARTICLES
Silver nanoparticles (AgNPs) stabilized with glutathione (GSH) were used as nanosensors for the determination of fluoroquinolones such as ciprofloxacin (CIP), norfloxacin (NOR) and enrofloxacin (ENRO) in aqueous systems. The AgNPs were stabilized with GSH (Ag-GSH NPs), whereas the decrease of the surface plasmon resonance (SPR) band at 400 nm and the bathoch
Quím. Nova. Publicado em: 2020-03
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6. Biosynthesis and Functionalization of Bacterial Cellulose Membranes with Cerium Nitrate and Silver Nanoparticles
This work aimed to synthesize bacterial cellulose (BC) membranes functionalized with Ce(NO3)3 and silver nanoparticles (AgNPs) heat-treated in oven and autoclave. The AgNPs were characterized by TEM and the membranes were characterized by their rehydration capacity, Thermogravimetric Analysis (TGA), Scanning Electron Microscopy with Dispersive Energy Spectro
Mat. Res.. Publicado em: 28/11/2019
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7. Biologically Synthesized Silver Nanoparticles for Enhancing Tetracycline Activity Against Staphylococcus aureus and Klebsiella pneumoniae
Abstract Phytochemical content of plant extracts can be used effectively to reduce the metal ions to nanoparticles in one-step green synthesis process. In this study, six plant extracts were used for the synthesis of silver nanoparticles (AgNPs). Biologically synthesized AgNPs was characterized using UV-Vis Spectrophotometer, Field Emission Scanning Electro
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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8. Photochemical Synthesis of Ag and Au Nanoparticles Using a Thioxanthone Substituted Chitosan as Simultaneous Photoinitiator and Stabilizer
Silver (AgNPs) and gold (AuNPs) nanoparticles in aqueous solution were generated and stabilized using the 10-oxo-10H-dibenzene thiopyran-3-4-dicarboximide chitosan (TXICh) macrophotoinitiator. The photoinitiator and the nanoparticles in aqueous solution were characterized by UV-Vis spectroscopy and transmission electron microscopy (TEM). Pure TXICh in aqueou
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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9. Aplicação de método estatístico no estudo da influência do peróxido de hidrogênio e do borohidreto de sódio na síntese de nanoparticulas de prata (AGNPS)
RESUMO Nanomateriais vem atraindo bastante atenção nos últimos anos em virtude das suas propriedades que permitem aplicações em diversas áreas como: química, física, medicina, fármacos e engenharias. No universo dos nanomaterias, as nanopartículas de prata (AgNPs) tem despertado o interesse de vários pesquisadores devido ao seu potencial bacterici
Matéria (Rio J.). Publicado em: 16/09/2019
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10. Application of silver nanoparticles in food packages: a review
Abstract Silver nanoparticles (AgNPs) are antimicrobial agents that have a wide spectrum of action, including against pathogenic bacteria and spoilage fungi. However, their mechanism of action is not completely clarified. Nowadays, scientific interest on biological synthesis of AgNPs is growing, with emphasis in their extracellular biosynthesis by microbial
Food Sci. Technol. Publicado em: 27/06/2019
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11. Reduction of Aqueous Ag+ Steered by Electrochemical Plasma: Connecting the Bulk pH Variation with the Reaction Pathways for Hydrated Electrons
Reduction of silver cations followed by nanoparticle (Ag-NPs) synthesis is a model process to understand the reduction mechanism induced by a discharge over an aqueous surface, termed electrochemical plasma. This work aims at studying the silver reduction reaction steered by electrochemical plasma in the presence of other chemically active plasma-related int
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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12. NANOTOXICOLOGIA DE NANOPARTÍCULAS DE PRATA: TOXICIDADE EM ANIMAIS E HUMANOS
Silver nanoparticles (AgNPs) have important antimicrobial activity. These nanoparticles are present in several commercial products, leading to human and environmental exposure. This review presents a critical view of the toxic effects of Ag NPs on in vitro and in vivo biological models. It is noteworthy that the toxicity of AgNPs is dependent on several para
Quím. Nova. Publicado em: 2019-02