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Web Date: June 9, 2011

A Simple Test Spots Bacteria

Biosensors: A strip of filter paper changes color when exposed to bacteria
Department: Science & Technology
News Channels: Environmental SCENE, Nano SCENE, Analytical SCENE
Keywords: pathogen detection, nanoparticle biosensor

In the developing world, drinking water contaminated with bacteria kills millions of people each year. Most methods to test drinking water for pathogens require expensive lab equipment and expert training, two resources many communities lack. To offer a cheap, simple alternative, researchers now demonstrate a test strip that changes color in the presence of bacteria (J. Am. Chem. Soc., DOI: 10.1021/ja2021729).

“There’s basically no easy . . .

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