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American Chemical Society's Weekly PressPac -- Nov. 19, 2008

Here is the latest American Chemical Society (ACS) News Service Weekly PressPac with news from ACS' 36 peer-reviewed journals and Chemical & Engineering News. Please credit the individual journal or the American Chemical Society as the source for this information.

ALL CONTENT IS FOR IMMEDIATE RELEASE EXCEPT ARTICLE #5, which is embargoed for 9 a. m., Eastern Time, November 24, 2008.


Microcapsules act as "roach motel" to kill harmful bacteria
ACS Applied Materials & Interfaces

Researchers in New Mexico and Florida are reporting development of microscopic particles that act as chemical booby traps for bacteria. The traps attract and kill up to 95 percent of nearby bacteria, including microbes responsible for worrisome hospital-based infections. The scientists describe their discovery as micro-sized "roach motels" for harmful bacteria. Their study went online November 24 in the premiere issue of ACS Applied Materials & Interfaces,a new monthly journal. It is scheduled for the January 28 print edition.

In the report, David G. Whitten of the University of New Mexico and Kirk S. Schanze of the University of Florida, working together with a team of faculty and graduate student collaborators, point out that bacterial contamination of medical devices causes up to 1.4 million deaths per year. In addition, bacteria are becoming more resistant to standard disinfection methods. Scientists also are increasingly concerned about the possibility of intentional release of harmful bacteria by terrorists. As a result, researchers are attempting to develop new and improved methods of disinfection.

The New Mexico and Florida groups describe an advance toward this goal. It involves the development of light-activated, hollow microcapsules composed of an organic conducting polymer. The antibacterial microcapsules can attract, capture, and kill bacteria. In

Contact: Mike Woods
American Chemical Society

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