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Banished bacteria

Scientists at the University of Florida have used fluorescent nanoparticles to spot food contamination, pinpointing just one E. coli bacterium in a sample of beef. They're developing their ultrasensitive test further and hope to improve food safety:

'Using a variety of colours, we can use fluorescent nanoparticles to check food for many different types of harmful bacteria, including E.coli and Salmonella. With a hand-held fluorescence detector, we'll be able to spot them all at the same time.' Weihong Tan, University of Florida



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Fluorescent nanoparticles make spotting bad bacteria on food easy.
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Fluorescent nanoparticles make spotting bad bacteria on food easy.
Images: Weihong Tan, Univ. of Florida

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