نتایج جستجو برای: silver nanoparticles agnps

تعداد نتایج: 141492  

Journal: Journal of Nanoanalysis 2020
H.M. El-Masry Noha Mohamed,

In this study, a single-step method for green synthesis of silver nanoparticles usingAloe Vera gel extract and sunlight was investigated. The Aloe Vera gel extractis composed of pectins, lignin, and hemicellulose, which can be used in thereduction of silver ions to produce colloidal silver nanoparticles (AgNPs-AV). Thepreliminary preparation of silver nanoparticles was o...

Journal: :international journal of molecular and clinical microbiology 0
vandana rathod department of microbiology gulbarga university, gulbarga -585106, karnataka, india afreen banu department of microbiology gulbarga university, gulbarga -585106, karnataka, india e ranganath department of microbiology gulbarga university, gulbarga -585106, karnataka, india

highly stabilized monodispersed silver nanoparticles (agnps) were synthesized by rhizopus stolonifer and the antifungal efficacy of silver nanoparticles (agnps) against candida sp. were studied. characterization of biosynthesized nanosilver was made by tem-eds and afm. minimum inhibitory concentration (mic) of biosynthesized agnps, amphotericin b, and fluconazole have been studied on pathogenic...

2012
Jaganathan Umashankari Dhinakarasamy Inbakandan Thipramalai T Ajithkumar Thangavel Balasubramanian

BACKGROUND Biosynthesis of nanoparticles has received increasing attention due to the growing need to develop safe, time-effective and environmentally friendly technologies for nano-materials synthesis. This paper reports the one pot green synthesis of silver nanoparticles (AgNPs) using the leaf bud extract of a mangrove plant, Rhizophora mucronata and their antimicrobial effects against aquati...

2012
Kyeongah Kang Hyeyoun Jung Jong-Seok Lim

Silver nanoparticles (AgNPs) are widely used nanoparticles and they are mainly used in antibacterial and personal care products. In this study, we evaluated the effect of AgNPs on cell death induction in the murine dendritic cell line DC2.4. DC2.4 cells exposed to AgNPs showed a marked decrease in cell viability and an induction of lactate dehydrogenase (LDH) leakage in a time- and dose-depende...

2013
Visweswara Rao Pasupuleti TNVKV Prasad Rayees Ahmad Shiekh Satheesh Krishna Balam Ganapathi Narasimhulu Cirandur Suresh Reddy Ismail Ab Rahman Siew Hua Gan

Nanotechnology is gaining momentum due to its ability to transform metals into nanoparticles. The synthesis, characterization, and applications of biologically synthesized nanomaterials have become an important branch of nanotechnology. Plant extracts are a cost-effective, ecologically friendly, and efficient alternative for the large-scale synthesis of nanoparticles. In this study, silver nano...

2016
T. Venkata Rajesh Kumar J. S. R. Murthy Madamsetti Narayana Rao Y. Bhargava

The present investigation demonstrates Couroupita guianensis flower buds extract mediated synthesis of stable silver nanoparticles (AgNPs). Instant formation of AgNPs was primarily confirmed by the appearance of yellowish brown colour and characteristic silver SPR band in the UV-visible spectrum. Elemental and crystalline natures of the AgNPs were identified from EDX and XRD pattern, respective...

Journal: :international journal of nano dimension 0
kirandeep kaur department of biotechnology, guru nanak girls college, ludhiana, india ratika komal department of biotechnology, guru nanak girls college, ludhiana, india

in the present study, we have reported the biological synthesis of silver nanoparticles (agnps) using aqueous leaf extract prepared by hot percolation treatment of wheat varities (pbw343, triticum durum and aegilops tauschii )for the reduction of silver ions to silver nanoparticles. bioreduction of ag+ to ag0 was observed when aqueous extract augmented with silver nitrate (agno3) was incubated ...

2017
Andrea Rónavári Dávid Kovács Nóra Igaz Csaba Vágvölgyi Imre Miklós Boros Zoltán Kónya Ilona Pfeiffer Mónika Kiricsi

Due to obvious disadvantages of the classical chemical methods, green synthesis of metallic nanoparticles has attracted tremendous attention in recent years. Numerous environmentally benign synthesis methods have been developed yielding nanoparticles via low-cost, eco-friendly, and simple approaches. In this study, our aim was to determine the suitability of coffee and green tea extracts in gre...

Journal: :Environmental toxicology and chemistry 2010
H Joel Allen Christopher A Impellitteri Dana A Macke J Lee Heckman Helen C Poynton James M Lazorchak Shekar Govindaswamy Deborah L Roose Mallikarjuna N Nadagouda

Relatively little is known about the behavior and toxicity of nanoparticles in the environment. Objectives of work presented here include establishing the toxicity of a variety of silver nanoparticles (AgNPs) to Daphnia magna neonates, assessing the applicability of a commonly used bioassay for testing AgNPs, and determining the advantages and disadvantages of multiple characterization techniqu...

Background: The development of ecofriendly and non-toxic processes for synthesis of nanoparticles is one of the most important aspects of nanotechnology. Silver nanoparticles are widely used in medicine because of their antimicrobial and antibacterial properties. Methods: Biosynthesis of silver nanoparticles (AgNPs) using the aqueous extract of leaf, stem and root of Rhizophora mucronata as th...

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