Add to favorite
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS

Luminous Molecules Help to Detect Toxicity of Nanomaterials
November 27, 2017 13:50

Bioluminescent molecules have been isolated from marine bacteria Vibrio fischeri.
Scientists from the Siberian Federal University (SFU) and the Federal Research Center "Krasnoyarsk Scientific Center of the SB RAS" have developed a test system based on bioluminescent molecules to assess the toxicity of nanomaterials, the SFU press service reports.
Luminous molecules were isolated by researchers from marine bacteria Vibrio fischeri. In the future, the technology can be modified for a wider range of nanomaterials. The article with the research results was published in the Toxicology in Vitro journal.
“The method stands out with the ease of use, high sensitivity and quickness of the result”, - the press release reads. Modern nanomaterials, such as, for example, nanotubes and fullerenes, are increasingly used in medicine, perfumes, cosmetics and food industry. As scientists write in their study, these may be toxic, but it is difficult to measure their toxicity due to the properties of the materials themselves – the size, structure, surface properties and chemical composition.
Scientists of SFU suggested using luminous substances from marine luminescent bacteria to detect toxicity. They developed a test system, which is a small disc with molecules of bioluminescent enzymes. Analyzed samples are placed on a disk, and after a few minutes it starts glowing: the brightness of this glow indicates the level of toxicity.
The first results have shown that multi-walled carbon nanotubes exhibit the greatest toxicity. They are followed with single-walled nanotubes and only then fullerenes. However, noticeable toxicity is observed only with the concentrations of substances much higher than those found in nature. However, with the growth of the nanoindustry, carbon materials are already produced artificially in large volumes.
In recent years, carbon nanotubes have been extensively used in a variety of areas - from electronics to the automotive industry. They are graphene “sheets” (i.e. modification of carbon laid in a one atom thick plane) folded into cylinders. In the case of multi-walled tubes, such cylinders can be nested in a different way. Technologies for the artificial synthesis of carbon nanotubes are developing rapidly, and their application is going to expand more and more overtime. Therefore, the task of assessing their toxicity is extremely urgent, since there is still much unknown about the interaction of nanomaterials with living cells, including the human body.


Author: Vera Ivanova

Tags: Nanomaterials     

Next Previous

You might also find interesting:

Country Undoria: How Russia Regained its Status of Dinosaur Land Russian Emercom to Start Monitoring Meteoric Threats Scientists from Russia and Germany Implement Project for Utilization of Algae Waste Small Encyclopedia Of Big Pseudo-Science Aboard Or Over The Board?

Comment on our site

RSS   twitter   facebook   submit

Bookmark and Share


search on the map
Contemporary Russian History Museum  5th Moscow Biennale  Roberto Rosetti  Documentaries  Archeology  Solovki  Great Patriotic War  odd news  Irkutsk Region  Russian legislation  Ivan Vyrypayev  Primorye  Bolshoi Theatre  Film Festivals  camping  Yaya  3D Printing  Yekaterinburg Monuments  Vologda  Archeological Finds  Driving License  Open Stunt Festival   Heroism   Russian history  Russian Literature  Russian academy of sciences  Sergey Dovlatov  FIFA World Cup   Russian business  Russian writers  Russian models  Norilsk Nickel  Abkhazia  Yermolino  Reserve Fund  War Artists  Vladimir Bukovsky  Lev Tolstoy  St. Petersburg  Oryol Region  Russian tourism  Russian Cinema  Mercedes-Benz Fashion Week Russia  Moscow  Exhibitions in Moscow  Moscow Kremlin Museums  book hotels in Russia  Russian transportation  Russian political parties  Russian opposition 

Travel Blogs
Top Traveling Sites