HTTP:: New Biosensor Detects Bacteria Fast and On The Spot
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Detecting bacteria using existing techniques in the laboratory at this point takes at least two days to perform. The samples are first enriched, then separated, identified and counted, and the entire process just takes up a lot of resources and time. With the help of a new biosensor, this type of analysis may soon become a thing of the past. It can detect extremely low bacterial concentrations very easily, and quickly too. The device could even be used in the field, for an on-the-spot analysis of samples.The Spanish research team behind the innovation says that the device is error-free and completely accurate, traits that have long been sought after by doctors, civil engineers and people in the military. In a study published in the latest issue of the scientific journal Angewandte Chemie, the team details the results that the new device produced on minute samples of the typhus-inducing Salmonella typhi bacterium. They also describe the basic operating principles of the new !
apparatus.Carbon nanotubes are the basis for this technique. The small tubes are laden with aptamers â€" short strands of DNA or RNA created so as to bind specifically to a single type of molecule. Any pathogen binding with the aptamers causes a shift in the electrical potentia...
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