Nano Archive

Antimicrobial effects of silver nanoparticles

Kim, Jun Sung and Kuk, Eunye and Yu, Kyeong Nam and Kim, Jong-Ho and Park, Sung Jin and Lee, Hu Jang and Kim, So Hyun and Park, Young Kyung and Park, Yong Ho and Hwang, Cheol-Yong and Kim, Yong-Kwon and Lee, Yoon-Sik and Jeong, Dae Hong and Cho, Myung-Haing (2007) Antimicrobial effects of silver nanoparticles. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE, 3 (1). pp. 95-101.

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The antimicrobial effects of silver (Ag) ion or salts are well known, but the effects of Ag nanoparticles on microorganisms and antimicrobial mechanism have not been revealed clearly. Stable Ag nanoparticles were prepared and their shape and size distribution characterized by particle characterizer and transmission electron microscopic study. The antimicrobial activity of Ag nanoparticles was investigated against yeast, Escherichia coli, and Staphylococcus aureus. In these tests, Muller Hinton agar plates were used and Ag nanoparticles of various concentrations were supplemented in liquid systems. As results, yeast and E. coli were inhibited at the low concentration of Ag nanoparticles, whereas the growth-inhibitory effects on S. aureus were mild. The free-radical generation effect of Ag nanoparticles on microbial growth inhibition was investigated by electron spin resonance spectroscopy. These results suggest that Ag nanoparticles can be used as effective growth inhibitors in various microorganisms, making them applicable to diverse medical devices and antimicrobial control systems. (c) 2007 Elsevier Inc. All rights reserved.

Item Type:Article
Uncontrolled Keywords:Ag nanoparticle; antimicrobial effects
Subjects:Physical Science > Nano objects
Biomedical Science > Nanobiotechnology
Biomedical Science > Nanotechnology for human health
Biomedical Science > Nanomedicine
ID Code:2600
Deposited By:Anuj Seth
Deposited On:09 Jan 2009 16:59
Last Modified:20 Jan 2009 11:47

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