Navigation Links
Spinning up antibacterial silver on glass
Date:6/27/2013

The antibacterial effects of silver are well established. Now, researchers at Yonsei University in Seoul, Republic of Korea, have developed a technique to coat glass with a layer of silver ions that can prevent growth of pathogenic bacteria including Escherichia coli, Salmonella typhimurium and Campylobacter jejuni. The technology could be used to protect medical equipment and be particularly useful for applications in disaster recovery and the military environment.

Materials scientist Se-Young Choi and colleagues Cheol-Young Kim, Yu-Ri Choi and Kwang-Mahn Kim, explain in the International Journal of Nanotechnology how silver has been known to be an antibacterial substance since the middle of the nineteenth century. It has found applications in bactericidal formulations for medical instruments and even odor-destroying socks

A big advantage of the use of this substance rather than organic agents against bacteria is that bacteria are yet to evolve resistance to it whereas genetic mutations that lead to proteins that can assimilate and degrade organic compounds frequently arise. As such, silver solutions have been used widely as disinfectants, in water purification in and in dentistry. Scientists have demonstrated that silver ions can latch on to sulfur-containing thiol groups in bacterial biomolecules disrupting their activity and thereby killing the microbes. Finding a way to add a permanent silver ion coating to glass would expand the antibacterial repertoire much further allowing a wider range of medical instruments, drinking vessels and other equipment to be kept sanitary regardless of working conditions.

The Seoul team has now developed a way to "spin" coat glass with silver present in a so-called sol-gel, a type of gelatinous solution within which are dispersed dissolved silver ions present as their nitrate salt. Spinning takes place at 200 Celsius with a rotation rate of 2000 revolutions per minute. They used atomic force microscopy to demonstrate how a substantial coating could be formed on glass and then successfully tested its activity against various food-poisoning bacteria. The resulting coated glass is more than 90 percent as transparent as uncoated glass bending strength tests show it to be slightly toughened by the presence of the silver coating.

"There are lots of bacteria that can cause serious food poisoning in the military equipment and environments," Choi explains. "So, the antimicrobial activity of the silver ion containing film showed its potential for use as a coating for medical devices and military equipment." The team suggests that the same approach could be used to spin coat other smooth materials.


'/>"/>

Contact: Albert Ang
press@inderscience.com
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. Study quantifies the size of holes antibacterials create in cell walls to kill bacteria
2. Antibacterial agent used in common soaps found in increasing amounts in freshwater lakes
3. Antibacterial proteins molecular workings revealed
4. HIV-derived antibacterial shows promise against drug-resistant bacteria
5. Are silver nanoparticles harmful?
6. Silver nanoparticle synthesis using strawberry tree leaf
7. Ions, not particles, make silver toxic to bacteria
8. How silver turns people blue
9. Global warming may have severe consequences for rare Haleakalā silverswords
10. Global warming may have severe consequences for rare Haleakalā silverswords
11. Is nanosilver toxic?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/30/2017)... , March 30, 2017 Trends, opportunities and ... and behavioral), by technology (fingerprint, AFIS, iris recognition, facial ... and others), by end use industry (government and law ... financial and banking, and others), and by region ( ... , Asia Pacific , and the ...
(Date:3/24/2017)... 2017 The Controller General of Immigration from Maldives ... Algeen have received the prestigious international IAIR Award for the most ... Reading ... Maldives ... Abdulla Algeen (small picture on the right) have received the IAIR award ...
(Date:3/22/2017)... , March 21, 2017   Neurotechnology , ... recognition technologies, today announced the release of the ... which provides improved facial recognition using up to ... a single computer. The new version uses deep ... accuracy, and it utilizes a Graphing Processing Unit ...
Breaking Biology News(10 mins):
(Date:6/27/2017)... (PRWEB) , ... June 27, 2017 , ... ... design for its patented GX-1 yeast production and fermentation process. The efficiencies ... that rely on micro-organism technologies, most notably the ethanol industry wherein individual production ...
(Date:6/26/2017)... (PRWEB) , ... June 26, 2017 , ... ... that Melissa Kirkegaard, the former Associate Director of Product Development R&D at Allergan ... and pharmaceutical products at both start-up and established biopharma companies, has joined the ...
(Date:6/26/2017)... ... June 26, 2017 , ... The Workgroup for Electronic Data Interchange (WEDI) ... efficiencies in healthcare information exchange and a statutory advisor to the U.S. Department of ... federal Office of the National Coordinator for Health Information Technology, will deliver the keynote ...
(Date:6/23/2017)... ... 23, 2017 , ... Biova, LLC., the leader in water soluble egg membrane ... Dr. Henig will bring a wealth of scientific experience in the food, beverage, nutrition ... and Scientific Officer of four major global companies in the last 4 decades. ...
Breaking Biology Technology: