Jana MichailiduUniversity of Chemistry and Technology | VSCHT · Department of Biotechnology
Jana Michailidu
PhD
About
14
Publications
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214
Citations
Introduction
Green synthesis of metal nanoparticles using plant extracts and their antimicrobial properties
Skills and Expertise
Publications
Publications (14)
The utilization of waste materials for the synthesis of nanoparticles has gained significant attention due to its potential for waste valorization and contribution to circular economy. In this study, bimetallic nanoparticles were produced using extracts derived from Cannabis sativa and Vitis vinifera waste, focusing on their green synthesis and ant...
Green methods have become vital for sustainable development of the scientific and commercial sphere; however, they can bring new challenges, including the need for detailed characterization and elucidation of efficacy of their products. In this study, green method of silver nanoparticles (AgNPs) production was employed using an extract from grapevi...
Rhamnolipids are extensively studied biosurfactants due to their potential in many industrial applications, eco-friendly production and properties. However, their availability for broader application is severely limited by their production costs, therefore the optimization of efficacy of their cultivation gains significance as well as the informati...
Boswellic acids are biologically active pentacyclic terpenoid compounds derived from Boswellia sp. plants. Extracts containing these acids have a number of positive effects on human health, especially in the treatment of inflammation, arthritis, or asthma. With increasing resistance to common antibiotics, boswellic acid-containing extracts could se...
Pseudomonas aeruginosa is a gram-negative bacterium capable of forming persistent biofilms that are extremely difficultto eradicate. The species is most infamously known due to complications in cystic fibrosis patients. The high mortality ofcystic fibrosis is caused by P. aeruginosa biofilms occurring in pathologically overly mucous lungs, which ar...
The ever-growing range of possible applications of nanoparticles requires their mass pro-
duction. However, there are problems resulting from the prevalent methods of nanoparticle production; physico-chemical routes of nanoparticle synthesis are not very environmentally friendly nor cost-effective. Due to this, the scientific community started expl...
The use of antibiotics or antifungals to control infections caused by pathogenic microorganisms is currently insufficiently effective because of their emerging resistance. Thanks to the ability of microorganisms to form a biofilm and thus increase their resistance to administered drugs even more, modern medicine faces the task of finding novel subs...
There is a growing interest in the potential and application of metal nanoparticles across many fields. A vast array of techniques for metal nanoparticle synthesis has been discovered; however, sustainability, cost-effectiveness, and environmental concerns favor the green biological approach, using various plant and microbial sources. This review d...
Microbial biofilms formed by pathogenic and antibiotic-resistant microorganisms represent a serious threat for public health in medicine and many industrial branches. Biofilms are involved in many persistent and chronic infections, the biofouling of water and food contamination. Therefore, current research is involved in the development of new trea...
With growing pressure for wide application of silver nanoparticles, the methods of their production have become increasingly important. Moreover, repurposing waste has been a globally acknowledged trend in the context of circular economy approaches in recent decades. Combining the two, this study presents a facile method of silver nanoparticle prod...
The occurrence of antimicrobial agents in any environment in subinhibitory concentrations can have a substantial effect on the indigenous microbial population. The release of such substances into the environment even at low concentrations should be closely monitored. In this work, ubiquitous soil bacteria, Gram-positive Rhodococcus erythropolis and...
Characterisation and biotechnology production of the polyether antibiotic monensin.
Questions
Question (1)
I am trying to make gold nanoparticles using a solution of HAuCl4 and plant extract (Vitis vinifera cane extract to be exact). I think nanoparticles are definitely forming (because of the peak around 500-600 nm when meassuring UV-VIS spectrum), but they start sedimenting in the bottom of the tube after a couple of hours of standing still. When I stir the contents of the tube, it gets dispersed again. Is this normal behaviour for gold nanoparticles? In the past, I've succesfully made silver nanoparticles but the sedimentation period there was much longer (days or weeks even). So I'm a little suspicious
Thank you for any information on this topic.
