Technologies aim to eradicate pathogens

Purdue University researchers are developing two inexpensive technologies that could prevent future food-borne illness similar to last year’s outbreak of E. coli bacteria in contaminated spinach.

The first method, Bacteria Rapid Detection Using Optical Scattering Technology, uses a laser to detect and identify bacteria. It is nearly three times faster and 1/10 as expensive as current technology.

The second technique uses chlorine dioxide gas to kill pathogens on fruits and vegetables. Washing and scrubbing cannot completely remove E. coli. Researchers are working to determine the optimum amount of gas that needs to be dispensed. Too much gas can decrease quality.

Patents are pending on both technologies.

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For more: Purdue University, Department of Food Science, 745 Agriculture Mall Drive, West Lafayette, IN 47907-2009; (765) 494-5443; fax (765) 494-7953.