Navigation Links
Antibacterial silver nanoparticles are a blast

Writing in the International Journal of Nanoparticles, Rani Pattabi and colleagues at Mangalore University, explain how blasting silver nitrate solution with an electron beam can generate nanoparticles that are more effective at killing all kinds of bacteria, including gram-negative species that are not harmed by conventional antibacterial agents.

Your running shoes, socks and even computer keyboard may be impregnated with silver nanoparticles that can kill some bacteria, keep you smelling sweet and preventing the spread of infection among computer users. Researchers in India point out that silver nanoparticles are not only antibacterial against so-called gram-positive bacteria, such as resistant strains of Staphylococcus aureus and Streptococcus pneumoniae but, also against gram-negative Escherichia coli and Pseudomonas aeruginosa.

Bacterial resistance to conventional antibiotics is threatening human health the world over. Medicinal chemists are desperately trying to develop new compounds that can kill strains such as MRSA (methicillin, or multiple-resistant Staphylococcus aureus) and E. coli O157. Frontline defenses, such as environmentally benign and cost-effective antibacterial compounds could prevent such infective agents spreading through contact with computer keyboard, phones and other devices.

Silver has been known to have antibacterial properties since ancient times. A modern technological twist means it has come to the fore for a wide range of applications because of the emergence of resistance to antibacterial gels. As such a new industry involving the production of bacteriostatic agents, including silver nanoparticles, has emerged.

Researchers have been experimenting with radiation to split silver compounds, releasing silver ions that then clump together to form nanoparticles. The incentive lies in the fact that such an approach avoids the need for costly and hazardous reducing agents and can be fine-tuned to produce nanoparticles of a controlled size, which is important for controlling their properties. Pattabi and colleagues have used electron beam technology to irradiate silver nitrate solutions in a biocompatible polymer, polyvinyl alcohol, to form their silver nanoparticles.

Preliminary tests show that silver nanoparticles produced by this straightforward, non-toxic method are highly active against S. aureus, E. coli, and P. aeruginosa.


Contact: Rani Pattabi
Inderscience Publishers

Related biology news :

1. Mineral studies advance antibacterial alternatives
2. Ultrasensitive imaging method uses gold-silver nanocages
3. Silver nanoparticles may one day be key to devices that keep hearts beating strong and steady
4. Nanophysics: Serving up Buckyballs on a silver platter
5. Audience Selected as Silver Winner in This Years Wall Street Journal Technology Innovation Awards and Winner of the Semiconductors Category
6. Lucky squirrels born with silver spoon effect
7. Rare albino ratfish has eerie, silvery sheen
8. U Alberta-led team studies T cell activation with nanoparticles
9. New method for recovering pricey nanoparticles
10. Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles
11. Engineers: Weak laser can ignite nanoparticles, with exciting possibilities
Post Your Comments:
(Date:10/12/2015)... 2015 Hoyos Labs ... company, will introduce its new biometric four-finger ... simultaneously, providing an unprecedented level of security ... the new biometric standard for secure transactions ... from financial services to healthcare are implementing ...
(Date:10/12/2015)... DUBLIN , Oct. 12, 2015 ... the addition of the "Iris Recognition Market ... Others), Application (Access Control & Others), Industry (Travel ... Geography Global - Forecast to 2020" report ... --> Iris Recognition Market worth ...
(Date:10/8/2015)... Oct. 8, 2015 Synaptics Inc. (NASDAQ: ... solutions, announced today that it will report financial ... on Thursday, October 22, 2015, after the close ... conference call for analysts and investors at 2:00 ... may discuss forward-looking information. ...
Breaking Biology News(10 mins):
(Date:10/12/2015)... , October 12, 2015 cell surface ... billion by 2022, according to a new report by Grand ... to rise in incidence of oncology diseases and other cell-associated ... is expected to reach USD 6.49 billion by 2022, according ... growth in demand can be attributed to rise in incidence ...
(Date:10/12/2015)... CAESAREA, Israel , October 12, 2015 ... of the Dario™ Diabetes Management Solution, today announced its ... a patient case study at MobiHealth,s 5th EAI ... Focused on, "Transforming healthcare through innovations in mobile and ... London, England from October 14 - ...
(Date:10/12/2015)... ... October 12, 2015 , ... NeuMedics Inc., is a specialty ... diseases that can safely and chronically be administered as an eye drop, announced today ... by The Cleveland Clinic and taking place October 25th to October 28th at The ...
(Date:10/10/2015)... Maryland , 10. Oktober, 2015 ... Matsui (Abgeordnete der Demokratischen Partei für Kalifornien) ihre ... bis 17. Oktober) in die Aufzeichnungen des Kongresses ... Plasma Protein Therapeutics Association (PPTA) und ihren ... , Hebung des Bewusstseins über Plasmaspenden weltweit ...
Breaking Biology Technology: