scholarly journals Biogenic Synthesis of Metal Nanoparticles Using a Biosurfactant Extracted from Corn and Their Antimicrobial Properties

Nanomaterials ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 139 ◽  
Author(s):  
Sergio Gómez-Graña ◽  
María Perez-Ameneiro ◽  
Xanel Vecino ◽  
Isabel Pastoriza-Santos ◽  
Jorge Perez-Juste ◽  
...  
Author(s):  
Subramani Srinivasan ◽  
Vinayagam Ramachandran ◽  
Raju Murali ◽  
Veerasamy Vinothkumar ◽  
Devarajan Raajasubramanian ◽  
...  

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Evangelia A Pavlatou

The transmission of a wide range of diseases, related to the infection by pathogenic microorganisms is a major public health problem that daily endangers the safety of human population. Silver has been thoroughly studied and used against bacteria due to its antimicrobial properties. Nanostructured silver gathers all the advantages of the silver itself, as well as the advanced performance of the nanomaterials. Thus, currently, silver nanoparticles constitute the most widely used kind of nanoparticles in biomedicine, due to their attractive antimicrobial properties. A variety of physical and chemical methods are employed for the AgNPs synthesis. However, many of them include the use of toxic reagents or require large amounts of energy, during the synthesis process. For this reason, many eco-friendly methods are proposed in order to synthesize AgNPs. Hence, biogenic synthesis of AgNPs, utilizing biological resources opens a novel route for the development of alternative production processes.These methods seem to have significant advantages, as the extracts contribute positively to the formation and enhancement of the antimicrobial activity of AgNPs, also acting as protective agents of the produced particles. In this review an integrated approach of AgNPs bio-synthetic methods using microorganisms, such as bacteria and fungi, plants and plant extracts, as well as several templates, like DNA and viruses is discussed, shedding light on the comparative advantages of them.


RSC Advances ◽  
2018 ◽  
Vol 8 (70) ◽  
pp. 40454-40463 ◽  
Author(s):  
Diamela María Rocca ◽  
Julie P. Vanegas ◽  
Kelsey Fournier ◽  
M. Cecilia Becerra ◽  
Juan C. Scaiano ◽  
...  

Natural derived compounds, lignins, can be used as reducing and stabilizing agents to synthesize noble metal nanoparticles with antimicrobial properties.


ChemInform ◽  
2015 ◽  
Vol 46 (41) ◽  
pp. no-no
Author(s):  
Samiran Mondal ◽  
Saswati Basu ◽  
Naznin Ara Begum ◽  
Debabrata Mandal

2014 ◽  
Vol 27 ◽  
pp. 41-52 ◽  
Author(s):  
Samiran Mondal ◽  
Saswati Basu ◽  
Naznin Ara Begum ◽  
Debabrata Mandal

Though there are a numerous methods for chemical synthesis, biogenic synthesis of nanoparticles offers an attractive alternative to chemical synthesis methods. Therefore scientists are continuously engaged in searching hazard free, environment friendly methods of synthesis of nanoparticles with tailor-made structural properties using benign starting materials. Recently several groups have achieved success in the synthesis of Ag, Au, Pd nanoparticles with specific shape and size using extracts obtained from micro-organisms as well as various plant extracts. It will be a highly interesting problem to modify the procedure to develop green-chemical means of synthesizing “tailor-made” monodisperse nanoparticles of single polygonal particle morphology, exclusively. The main objective of this brief article is to give an idea about the most reliable, cost-effective and environment friendly synthetic protocols for metal nanoparticles of different size, shape, composition, and with a high degree of monodispersity.


2020 ◽  
Vol 14 (3) ◽  
pp. 1789-1800 ◽  
Author(s):  
Muhammad Nisar ◽  
Shujaat Ali Khan ◽  
Maryam Gul ◽  
Abdur Rauf ◽  
Salman Zafar ◽  
...  

The aim of the current research finding was to synthesize, characterize and antibacterial evaluation of sparfloxacin-mediated noble metal nanoparticles. Noble metal [silver (Ag), and gold (Au)] nanoparticles (NPs), mediated with fluoroquinolone, an anti-bacterial drug [Sparfloxacin, (Sp)], was synthesized by a facile and convenient procedure. Formulated Ag-Sp NPs, and Au-Sp NPs exhibited stability against variation in pH, NaCl solution, temperature, and time. The structural topographies of Ag-Sp, and Au-Sp NPs were determined by fourier transform infrared spectroscopy (FTIR), UV-visible spectroscopy (UV-Vis), scanning electron microscopy (SEM) atomic force microscopy (AFM), and energy dispersive X-ray (EDX). UV-Vis revealed the formulation of NPs by showing typical surface Plasmon absorption maxima at 410 nm for Ag-Sp NPs and 555 nm for Au-Sp NPs. The AFM and SEM analysis ascertained stable mono dispersed Ag-Sp NPs and Au-Sp NPs in the size range of 40-50 nm, and 70-80 nm, respectively. Ag-Sp, and Au-Sp NPs exhibited antibacterial traits against Bacillus subtilis, Staphylococcus aureus, and Klebsiella pneumonia, showing a zone of inhibition (ZOI) ranging from 20±0.98 mm to 24±0.94 mm (Ag-Sp NPs), and 22±0.79 mm to 26±0.92 mm (Au-Sp NPs) at dose of 3 mg/mL.


RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4092-4105 ◽  
Author(s):  
A. Rozmysłowska-Wojciechowska ◽  
E. Karwowska ◽  
S. Poźniak ◽  
T. Wojciechowski ◽  
L. Chlubny ◽  
...  

Schematic representation of the concept of present study. The flowchart shows the process of surface-modification of Ti3C2 MXene and the subsequent ecotoxicological analyses employed.


2020 ◽  
Vol 20 (11) ◽  
pp. 1009-1028
Author(s):  
Pawan Kaur ◽  
Rita Choudhary ◽  
Anamika Pal ◽  
Chanchal Mony ◽  
Alok Adholeya

Metal nanoparticles are well known for their antimicrobial properties. The use of metalbased nanoparticles in the agricultural field has considerably increased globally by both direct and indirect means for the management of plant diseases. In this context, the development of controlled delivery systems for slow and sustained release of metal nanoparticles is crucial for prolonged antimicrobial activity. Polymers have emerged as a valuable carrier for controlled delivery of metal nanoparticles as agrochemicals because of their distinctive properties. The most significant benefits of encapsulating metal nanoparticles in a polymer matrix include the ability to function as a protector of metal nanoparticles and their controlled release with prolonged efficacy. This review focuses on loading strategies and releasing behavior of metal nanoparticles in the polymer matrix as antimicrobial agents for plant diseases. The Polymer-metal nanocomplexes (PMNs) comprise a biocompatible polymeric matrix and metal nanoparticles as active components of an antimicrobial agent, pesticides and plant growth regulators used to enhance the crop productivity.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Sidra Sabir ◽  
Muhammad Arshad ◽  
Sunbal Khalil Chaudhari

Nanotechnology is the most innovative field of 21st century. Extensive research is going on for commercializing nanoproducts throughout the world. Due to their unique properties, nanoparticles have gained considerable importance compared to bulk counterparts. Among other metal nanoparticles, zinc oxide nanoparticles are very much important due to their utilization in gas sensors, biosensors, cosmetics, drug-delivery systems, and so forth. Zinc oxide nanoparticles (ZnO NPs) also have remarkable optical, physical, and antimicrobial properties and therefore have great potential to enhance agriculture. As far as method of formation is concerned, ZnO NPs can be synthesized by several chemical methods such as precipitation method, vapor transport method, and hydrothermal process. The biogenic synthesis of ZnO NPs by using different plant extracts is also common nowadays. This green synthesis is quite safe and ecofriendly compared to chemical synthesis. This paper elaborates the synthesis, properties, and applications of zinc oxide nanoparticles.


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