نتایج جستجو برای: green synthesis of silver nanoparticles

تعداد نتایج: 21223070  

2014
Ashutosh Yadav Preetika Biswas

There has been commendable development in the field of biosynthesis of nanoparticles due to their low cost, environment friendly approach. One such biological entity employed in the synthesis is a fungus, Fusarium oxysporum that has shown hopes for a sustainable synthesis of many nanoparticles. In this review we will give an overview of the synthesis of nanoparticles using green methods and the...

Background: Biosynthesis of nanoparticles using microorganisms, enzymes, and plant extracts is regarded as an alternative to chemical methods. Microalgae appear to be an efficient biological platform for nanoparticle synthesis as they grow rapidly and produce large biomass at lower cost. Objectives: The possibility of silver nanoparticles biosynthesisby freshwater green microalgae, Chlamydomona...

2016
B. Srinivas P. Naga Padma

Dextran a polymer of glucose is produced by different microorganisms like Leuconostoc mesenteroides, Lactobacillus sps, Streptococcus mutants, Weissella confusa etc. It has a wide range of applications in the food, pharmaceuticals and other industries. It also has significant role in green synthesis of silver nanoparticles. In the present study an efficient low molecular dextran produced by an ...

Nanotechnology is new form of technology which has produced a great development in variousfields. Nanoparticles are of the great scientific interest as they are effectively a bridge between bulk material and atomic & molecular structures. Nanoparticles are the particle that have size 1 to 100 nm and possess due to large surface area to volume ratio & smaller size. Different types of nanom...

2014
Kanniah Paulkumar Gnanadhas Gnanajobitha Mahendran Vanaja Shanmugam Rajeshkumar Chelladurai Malarkodi Kannaiyan Pandian Gurusamy Annadurai

Utilization of biological materials in synthesis of nanoparticles is one of the hottest topics in modern nanoscience and nanotechnology. In the present investigation, the silver nanoparticles were synthesized by using the leaf and stem extract of Piper nigrum. The synthesized nanoparticle was characterized by UV-vis spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), tran...

Journal: :current medical mycology 0
farhad niknejad infectious disease research science, golestan university of medical sciences, gorgan, iran mojtaba nabili student research committee, mazandaran university of medical sciences, sari, iran roshanak daie ghazvini department of medical parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran maryam moazeni invasive fungi research centre, department of medical mycology & parasitology, school of medicine, mazandaran university of medical sciences, sari, iran

background and purpose: microorganism-based synthesis of nanostructures has recently been noted as a green method for the sustainable development of nanotechnology. nowadays, there have been numerous studies on the emerging resistant pathogenic bacteria and fungal isolates, the probable inability of bacteria and fungi to develop resistance against silver nanoparticles’ (snps) antibacterial, ant...

2014
Deepak K. Rahi

In the recent past green synthesis has emerged as an important and eco friendly technology in the field of nanosciences for the synthesis of various metal nanoparticles of variable sizes and shapes. The present study focuses on the mycosynthesis (i.e., synthesis by fungi) of silver nanoparticles by an important species of Penicillium, an endophytic fungus isolated from the roots of Aloe vera pl...

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...

2013
Kantha D Arunachalam Sathesh Kumar Annamalai Shanmugasundaram Hari

In this experiment, green-synthesized silver and gold nanoparticles were produced rapidly by treating silver and gold ions with an extract of Memecylon umbellatum leaf. The reaction process was simple and easy to handle, and was monitored using ultraviolet-visible spectroscopy. The effect of the phytochemicals present in M. umbellatum, including saponins, phenolic compounds, phytosterols, and q...

2012
Yuet Ying Loo Buong Woei Chieng Mitsuaki Nishibuchi Son Radu

The development of the biological synthesis of nanoparticles using microorganisms or plant extracts plays an important role in the field of nanotechnology as it is environmentally friendly and does not involve any harmful chemicals. In this study, the synthesis of silver nanoparticles using the leaves extract of Chinese tea from Camellia sinensis is reported. The synthesized nanoparticles were ...

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